Gotowe bibliografie tematyczne / Operability

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Gotowa bibliografia na temat „Operability”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 8 czerwca 2024

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Artykuły w czasopismach na temat "Operability"

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Amaefule, KennethEzenwa, i DahiruIsmail Lawal. "Operability in polytrauma". Archives of International Surgery 5, nr 3 (2015): 131. http://dx.doi.org/10.4103/2278-9596.167473.

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Opitz, I. "ES12.01 Defining Operability". Journal of Thoracic Oncology 16, nr 10 (październik 2021): S832—S833. http://dx.doi.org/10.1016/j.jtho.2021.08.745.

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Riau, Dwi Putranto, Rulinawaty, Dwi Siswahyudi i Muhtarom. "Strategies for Implementing Building Operability Certificate to Improve Performance of Building Management: A Case Study in Probolinggo City, Indonesia". Scientific World Journal 2024 (6.01.2024): 1–9. http://dx.doi.org/10.1155/2024/8749628.

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An operability certificate is required before using a building. The building operability certificate concerns occupants’ safety before the building is used and is directed by Law Government Regulation 16 of 2021 for building security. This article discusses implementing a building operability certificate underperforming and the strategy for implementing the building operability certificate (SLF) policy. This research uses a descriptive qualitative method. First, qualitative data analysis utilizing SWOT determined the building operability certificate implementation strategy. Second, ranking strategies are analyzed to identify (QSPM’s) priorities. According to the regulation that every building must have SLF, the building operability certificate was not appropriately implemented. With the current building information system legislation, each region can issue Building Approval (PBG) and building operability certificate (SLF). Research findings based on SWOT and QSPM are used to generate seven strategies: Regional Apparatus Work Units (SKPD) commitment, increased socialization, regulation implementation, capacity building, optimal communication, SIMBG implementation, and increasing resources.
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Shimada, Y., K. Suzuki i H. Sayama. "Computer-aided operability study". Computers & Chemical Engineering 20, nr 6-7 (czerwiec 1996): 905–13. http://dx.doi.org/10.1016/0098-1354(95)00187-5.

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Wiegel, Matijs, Wiebe de Boer, Mark van Koningsveld, Arne van der Hout i Ad Reniers. "Global Mapping of Seaport Operability Risk Indicators Using Open-Source Metocean Data". Journal of Marine Science and Engineering 9, nr 7 (24.06.2021): 695. http://dx.doi.org/10.3390/jmse9070695.

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Seaport operability is key to the economic viability of ports. Metocean conditions (e.g., wind, short waves, and infragravity waves) affect this operability when certain thresholds are exceeded. This paper describes a method for the global mapping of seaport operability risk indicators using open-source metocean data. This global-scale assessment provides a geographic overview of operability risks and first-order insights into the most relevant metocean risk indicators at each location. The results show that locations around the equator and inland seas have lower operability risk than locations farther away from the equator. “Hotspots” are mainly located along the southern capes (Cape of Good Hope, Leeuwin, Horn), around the ‘Roaring Forties’, and at exposed locations along the oceans. Of the metocean parameters considered, short waves are found to be the most critical risk indicator for port operability at most locations. Using (the insights of) this study, port authorities, operators, and designers can prepare for metocean risks at an early stage and effectively respond with mitigation measures and layout adjustments to improve port operability.
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Ghaemi, M. Hossein, i Henryk Olszewski. "Total Ship Operability –Review, Concept and Criteria". Polish Maritime Research 24, s1 (25.04.2017): 74–81. http://dx.doi.org/10.1515/pomr-2017-0024.

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Abstract The ship operability can be understood and analysed in different manners, and its quality is described using different indexes by different authors. Practically, there is no general and widely accepted description of total ship operability in the literature, nor in the rules of classification societies, which would include both seakeeping and manoeuvrability characteristics of a ship, and simultaneously take into account all ship subsystems and, what is most important, comfort and safety of people on board. The aim of this paper is to propose a general definition of total ship operability and name, adjust, describe and justify criteria which should be considered in the ship operability analysis, as well as to provide a relevant algorithm paving the road for further investigation on total ship operability determination.
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Osurai, Yoshimasa, Yasuhiro Inuzuka i Hideichi Ito. "Operability of Car Audio Controls". Proceedings of the Human Factors Society Annual Meeting 34, nr 9 (październik 1990): 618–22. http://dx.doi.org/10.1177/154193129003400908.

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Szweda, Jan, Zdenek Poruba, Roman Sikora i Jiří Podešva. "Computational Analysis of Mechanism Operability". Applied Mechanics and Materials 315 (kwiecień 2013): 879–83. http://dx.doi.org/10.4028/www.scientific.net/amm.315.879.

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This article deals with a way of interpretation the results of numerical simulations solved for the mechanism of lifting platform. Subject of analysis is the atypical design solution of lifting mechanism with one degree of freedom, which members are connected by revolute joints and linear sliding guidance. The mechanism movement is provided by linear hydromotors. Computational simulations are carried out by FEM, where linear coupling equations are used for modeling of revolute joints and linear sliding guidance is modeled by structural contact of rail and slider. The way of modeling and parameters setting of structural contact significantly affects the stability of numerical solutions and the obtained results. The authors assume that the interpretation of the observed behavior and results of the numerical simulations allow to deduce the mechanism operability and gives a clue for setting the gap of real bounds.
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Kropholler, Hein W., i Andrés R. Guesalaga. "Operability improvement of distillation columns". Chemical Engineering Journal 44, nr 2 (lipiec 1990): 81–88. http://dx.doi.org/10.1016/0300-9467(90)80060-p.

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Hughes, John. "Certificate inter-operability — white paper". Computers & Security 18, nr 3 (styczeń 1999): 221–30. http://dx.doi.org/10.1016/s0167-4048(99)80067-4.

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Rozprawy doktorskie na temat "Operability"

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Filla, Reno. "Quantifying Operability of Working Machines". Doctoral thesis, Linköpings universitet, Fluida och mekatroniska system, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70394.

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In working machines the human operator is essential for the performance of the total system. Productivity and energy efficiency are both dependent not only on inherent machine properties and working place conditions, but also on how the operator manoeuvres the machine. In order to operate energy-efficient the operator has to experience the machine as harmonic. This is important to consider during the development of such working machines. It is necessary to quantify operability and to include this interaction between the human operator and the machine in both the later stages of a development project (where physical prototypes are evaluated by professional test operators) as well as in the earlier stages like concept design (where only virtual prototypes are available). The influence of the human operator is an aspect that is traditionally neglected in dynamic simulations conducted in concept design, because the modelling needs to be extended beyond the technical system. The research presented in this thesis shows two approaches to rule-based simulation models of a wheel loader operator. Both operator models interact with the machine model just as a human operator does with the actual machine. It is demonstrated that both operator models are able to adapt to basic variations in workplace setup and machine capability. A “human element” can thus be introduced into dynamic simulations of working machines, providing more relevant answers with respect to operator-influenced complete-machine properties such as productivity and energy efficiency. While the influence of the human operator is traditionally ignored when evaluating machine properties in the early stages of the product development process, later stages are very reliant on professional test operators using physical prototypes. The presented research demonstrates how the traditional subjective evaluation of a machine’s operability can be complemented by a calculated measure for the operator’s control effort, derived from the recorded control commands of the machine operator. This control effort measure can also be calculated from the control commands of an operator model in a simulation, such as those presented in this thesis. It thus also allows for an assessment of operability already in the concept design phase. In addition, the results of a study of quantifying operator workload by means of measuring psycho-physiological data such as heart rate variability and respiration rate are presented as the first step towards realising workload-adaptive operator assistance functions. Once fully developed, the method itself can also be used as another complement to the traditional subjective evaluations of operability. This approach can then be applied not only in testing of physical prototypes, but also earlier in the product development process in studies on human-in-the-loop simulators.
I arbetsmaskiner spelar föraren en avgörande roll för maskinens prestanda. Såväl produktivitet som energieffektivitet beror inte enbart av maskinens egenskaper och arbetsomgivningen, utan beror också av sättet på vilket föraren manövrerar maskinen. För att främja ett bränslesnålt körsätt ska maskinerna upplevas som harmoniska och det är viktigt att beakta detta vid utvecklingen. Det är nödvändigt att kvantifiera maskinharmonin och att ta hänsyn till interaktionen mellan föraren och maskinen i alla steg av ett utvecklingsprojekt. Detta gäller såväl sena faser, när fysiska prototyper redan har tagits fram och utvärderas av professionella provförare, såväl som tidiga faser som konceptutveckling, när endast virtuella prototyper finns tillgängliga. Förarens inflytande beaktas traditionellt inte i prestandasimuleringar i konceptfasen, eftersom detta innebär att mer än enbart det tekniska systemet måste modelleras. I den forskningen som presenteras här visas två olika regelbaserade modeller av hjullastarförare. Båda förarmodellerna använder maskinmodellen på samma sätt som en verklig förare använder en verklig maskin. Det visas att båda förarmodellerna kan anpassa sig till förändringar både i arbetsomgivningen och i maskinens egenskaper. I och med detta kan man utöka dynamiska simuleringar av arbetsmaskiner med ”ett mänskligt element”. Detta ger bättre resultat vad gäller produktivitet, energieffektivitet och liknande egenskaper som föraren påverkar i kompletta maskiner. Medan man i tidiga faser av produktutvecklingsprocessen traditionellt bortser från förarens inflytande, så är man i senare faser mycket beroende av att professionella provförare testar fysiska prototyper. Den här presenterade forskningen visar hur den traditionella subjektiva förarbedömningen av en maskins körbarhet kan kompletteras med ett mått på förarens ”spakarbete”, som beräknas utifrån en mätning på hur föraren använder sina kontroller för att styra maskinen. Detta mått på ”spakarbete” kan också beräknas utifrån de spaksignaler som genereras av förarmodellerna i en simulering. I och med detta kan en maskins körbarhet undersökas redan under konceptutvecklingen. I avhandlingen redovisas också resultaten från en studie som gjorts i syfte att kvantifiera förarens arbetsbelastning genom att mäta psykofysiologiska mått som variationer i hjärtfrekvens och andningsfrekvens. Studien är ett första steg mot att förverkliga en vision av stödfunktioner i arbetsmaskiner vilka anpassar sig efter förarens momentana arbetsbelastning. En sådan metod att mäta förarens arbetsbelastning kan också användas som ett komplement till den traditionella subjektiva förarbedömningen av en maskins körbarhet. Metoden kan inte bara användas vid provning av fysiska prototyper utan också tidigare i produktutvecklingsprocessen vid studier i avancerade körsimulatorer.
IN ARBETSMASCHINEN spielt der Fahrer eine entscheidende Rolle für die Leistung des gesamten Systems. Produktivität und Energieeffizienz sind nicht nur abhängig von den Grundeigenschaften der Maschine und den Bedingungen am Einsatzort, sondern auch von der Art und Weise wie der Fahrer die Maschine manövreriert. Für eine kraftstoffsparende Fahrweise muss der Fahrer die Maschine als harmonisch erleben. Dies muss bei der Entwicklung beachtet werden. Das Erfassen der Fahrbarkeit und die Berücksichtigung des Zusammenspiels zwischen Fahrer und Maschine ist in allen Phasen der Entwicklung notwendig, sowohl in den späteren Phasen, wenn Prototypen von Erprobungsfahrern ausgewertet werden, als auch in den frühen Phasen wie dem Konzeptentwurf, wenn nur virtuelle Prototypen vorhanden sind. Der Fahrereinfluss wird traditionell in den dynamischen Simulationen während des Konzeptentwurfs vernachlässigt, denn er erfordert die Ausweitung der Modellierung über das technische System hinaus. In dieser Dissertation werden zwei Herangehensweisen zur Erstellung regelbasierter Modelle eines Radladerfahrers aufgezeigt. Beide Fahrermodelle interagieren mit dem Maschinenmodell gleich einem menschlichen Fahrer mit einer realen Maschine. Es wird gezeigt, dass beide Fahrermodelle in der Lage sind, sich auf Änderungen des Einsatzortes und der Maschineneigenschaften anzupassen. Somit kann „ein menschliches Element“ in die dynamische Simulation von Arbeitsmaschinen eingeführt werden, was zu qualitativ besseren Resultaten bezüglich Produktivität, Energieeffizienz und ähnlicher fahrerbeeinflusster Eigenschaften führt. Während man in den frühen Phasen der Produktentwicklung traditionell vom Fahrereinfluss absieht, ist man später sehr auf die Erprobung physischer Prototypmaschinen durch professionelle Testfahrer angewiesen. In dieser Dissertation wird aufgezeigt, wie die traditionell subjektive Bewertung der Fahrbarkeit einer Maschine mit einem Maß der „Steuerungsarbeit“ komplettiert werden kann, berechnet aus der gemessenen Betätigung der dem Fahrer zur Verfügung stehenden Bedienelemente. Dieses Maß der „Steuerungsarbeit“ kann auch aus den Signalen der von uns vorgestellten Fahrermodelle in einer Simulation berechnet werden. Damit kann man die Fahrbarkeit bereits in der Konzeptentwicklung abschätzen. Weiterhin werden die Resultate einer Studie zur Quantifizierung der Fahrerbelastung mithilfe psychophysiologischer Daten wie Veränderungen der Herzfrequenz und Atmungsfrequenz vorgestellt. Diese Studie ist ein erster Schritt zur Entwicklung eines Assistenzsystemes, dass sich an die aktuelle Fahrerbelastung anpasst. Eine solche Messmethode der Fahrerbelastung kan auch zusätzlich zur traditionellen subjektiven Fahrbarkeitseinschätzung angewendet werden – nicht nur bei der Erprobung physischer Prototpyen, sondern auch schon frühzeitig bei Studien auf Fahrsimulatoren.
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Munro, Stuart. "Scramjet Intakes: Designing for Performance and Operability". Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491519.

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The classical approach to scramjet intake design, analysis, experimental testing, and performance assessment treats the intake as separate from the rest of the vehicle. This thesis argues that a more integrated approach is necessary. The design space of Mach 7 two-dimensional, axi-symmetric spike and Busemann-type intakes with focused forebody waves and throats expanded to the Kantrowitz limit is parameterised geometrically and stream thrust average performance parameters calculated across the range of possible intake designs. An engine cycle is applied to arbitrate between conflicting capability and efficiency design points. The two-dimensional analysis is extended to include angle of attack, off-design Mach number and defocused conditions. Intakes with sharp leading edges and moderate turning angles are found to perform optimally, and the relatively large combustor hydraulic diameter and higher capability of inward turning designs are found to improve engine performance significantly. An upper bound is established for the performance of stream-traced Busemann intakes and it is shown how the performance of truncated Busemann derivatives may be improved by extending the leading edge at constant angle. The thesis also describes complementary experiments investigating intake operability carried out in the University of Oxford's gun tunnel. This facility was converted to operate as a Ludwieg tube with Light piston Isentropic Compression Heating (LICH) to improve flow steadiness when matching Reynolds numbers and temperature ratios to 2:5 scale Mach 7, 30 km altitude flight. Tunnel stagnation temperatures are measured and correlations to the fill pressures and stagnation pressure history are determined. The design and build of a two-dimensional wedge intake with isolator to determine intake starting limits by varying cowl position and shoulder angle is described. The isolator is shown to degrade starting characteristics by increasing the likelihood of internal choking. The implementation of a self-starting test, employing gas injection via fast acting valves, is implemented to demonstrate the self-starting characteristics of an axi-symmetric spike intake with internal contraction exceeding the Kantrowitz limit. Fuel injection and combustor back pressure are also simulated at angle of attack. Boundary layer trips are shown to significantly improve the operability of both models tested.
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Davies, Matthew Lloyd. "Exploiting nonlinear kinetics to enhance process operability". Thesis, University of Leeds, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270897.

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BECERRA, MELISA YVONE ZAMBRANO. "OPERABILITY LIMITS OF THE CURTAIN COATING PROCESS". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=15502@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
O revestimento por cortina é um dos processos preferidos para revestir o substrato de varias camadas de líquido à altas velocidades. Este tipo de processo pertence a classe de método de revestimento de vazão pre-fixada. O processo consiste num líquido de revestimento caindo livremente de uma altura considerável sob ação da gravidade sobre o substrato em movimento a ser revestido. Existem várias aplicações industriais deste processo, como filmes óticos, fitas adesivas e magnéticas, papéis especiais entre muitos outros. As mais importantes vantagens são revestimento à altas velocidades, adaptação a uma grande variedade de líquidos e flexibilidade na aplicação de finas camadas de líquidos em superfícies irregulares. Os limites operacionais do processo são determinados por diferentes instabilidades no escoamento perto da zona de encontro entre o líquido e o substrato como entrada de ar, formação de calcanhar e a cortina sendo puxada pelo substrato, e pela quebra da cortina de líquido. O objetivo principal deste trabalho é analisar teórico e experimentalmente esses limites operacionais, focando nos efeitos dos parâmetros operacionais, aditivos no líquido de revestimento no escoamento que ocorre na zona de encontro entre o líquido e o substrato, e na quebra da cortina. Para descrever o escoamento bidimensional que ocorre no processo de revestimento por cortina, na simulação numérica, foram utilizadas as equações de conservação de massa e de conservação de quantidade de movimento. O sistema de equações diferenciais foi resolvido utilizando o método de Galerkin e o sistema não linear foi resolvido com o método de Newton. Resultados teóricos, na zona de encontro entre líquido e o substrato, mostram a configuração do escoamento para líquidos Newtonianos, incluindo a formação de calcanhar e a cortina puxada pelo substrato como uma função da velocidade do substrato, da altura da cortina e da vazão. Estes resultados foram comparados com os resultados da visualização experimental encontrando assim a janela de operação do processo em função dos parâmetros operacionais. Na zona do escoamento da cortina, a condição crítica na qual cortina de líquido quebra foi determinada como uma função das propriedades reologicas dos líquidos de revestimento. Os resultados mostram que as propriedades viscoelásticas influenciam no balanço de forças no escoamento da cortina. Líquidos com alta viscosidade extensional podem reduzir notavelmente a vazão mínima necessária para formar e manter cortinas estáveis.
Curtain coating is one the preferred methods for precision multi-layer coatings at high speeds. Curtain coating belongs to the class of premetered coating methods. Liquid falls as a sheet, or curtain, freely over a considerable height and under the action of gravity before it impinges onto the substrate being coated. Edge guide are needed to maintain at specific width of the falling curtain. Precision curtain coating was originally developed for multi-layer photographic film but its use has expanded to many different applications such as optical films and specialty papers. Some advantages of this process include very high coating speeds, adaptability to a wide range of liquids and flexibility to apply thin liquid layer to irregular surfaces. The operability limits of the process are set by different flow instabilities in the coating bead, such as air entrainment, low speed heels and curtain pulling, and by curtain breakup. The goal of this research is to analyze these operability limits by theory and experiments. The focus is to determine the effect of operating parameters; edge guides design and polymer additives on the coating solution on the bead configuration and liquid curtain breakup. The conservation mass and momentum equations with the boundary conditions were used to describe the flow. The equations were solved all together by Galerkin’s method with finite element basis functions and non-linear system solved by Newton’s method. Theoretical results show the bead configuration, including heel formation and curtain pulling as a function of web speed, curtain height and flow rate. Theoretical predictions will also be extended to include viscoelastic behavior of the coating liquid. This results was compared with experimental results to obtain the coating windows for fixed parameters. The visualization results show the critical condition at which a viscoelastic liquid curtain breaks was determined as a function of the rheological properties of the coating liquid. The results show that the viscoelastic properties can affect the force balance in the curtain flow. High extensional viscosity liquids can drastically reduce the minimal flow rate to create more stable curtains.
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Hattingh, Caleb. "On the operability of heat exchanger networks". Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/5320.

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Bibliography: leaves 127-132.
The dynamic operability of processes refers to the degree to which plants may be satisfactorily controlled. This report presents a study of the operability of heat exchanger networks (HENs).The integration of heat exchange systems such as HENs typically results in significant steady-state cost savings which is the motivation for their implementation. However, such integration may lead to problems in the dynamic operation of the system if the operability of HENs is not considered. Operability analysis techniques are presented that provide a quantitative measure of the operability of HENs that is related to the minimum integral setpoint error of a closed-loop HEN under a step disturbance. The different operability analysis techniques are specified by ,u sing different controller types which are optimally tuned in an optimization framework. The different controllers include PI (proportionalintegral) control, MPC (model predictive control), optimal linear control (via Qparametrization) and an optimal open-loop control strategy that represents the best possible closed-loop performance.
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Seaman, David Richard. "Operability analysis of an industrial communication circuit". Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/5405.

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Ramadaan, Safa Y. "Reliability analysis for hazard and operability studies". Thesis, Aston University, 1987. http://publications.aston.ac.uk/10215/.

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Fault tree analysis is used as a tool within hazard and operability (Hazop) studies. The present study proposes a new methodology for obtaining the exact TOP event probability of coherent fault trees. The technique uses a top-down approach similar to that of FATRAM. This new Fault Tree Disjoint Reduction Algorithm resolves all the intermediate events in the tree except OR gates with basic event inputs so that a near minimal cut sets expression is obtained. Then Bennetts' disjoint technique is applied and remaining OR gates are resolved. The technique has been found to be appropriate as an alternative to Monte Carlo simulation methods when rare events are countered and exact results are needed. The algorithm has been developed in FORTRAN 77 on the Perq workstation as an addition to the Aston Hazop package. The Perq graphical environment enabled a friendly user interface to be created. The total package takes as its input cause and symptom equations using Lihou's form of coding and produces both drawings of fault trees and the Boolean sum of products expression into which reliability data can be substituted directly.
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Rashid, Muhammad. "Stability and dynamic operability analysis of chemical processes". Title page, table of contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09ENS/09ensr224.pdf.

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Yee, Kevin Wing Kan Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Operability analysis of a multiple-stage membrane process". Publisher:University of New South Wales. Chemical Sciences & Engineering, 2008. http://handle.unsw.edu.au/1959.4/41287.

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Membrane processes have found increasing industrial applications worldwide. For membrane processes to deliver their desired performances and mitigate the effect of disturbances, automatic controllers must be installed. Before the installation of controllers, operability analysis is a crucial step to evaluate how well the processes can be controlled, and to determine how process design can be improved for better control. However, existing applications of operability analysis in membrane processes are limited. This thesis extends the application of operability analysis to a multiple-stage membrane process, exemplified by a detailed case study of a 12-stage industrial whey ultrafiltration (UF) process. Process dynamic models are determined to describe the transient behaviour of process performance caused by disturbances and long-term fouling. Steady-state nonlinear operability analysis is conducted to identify inherent limitations of the process. Using the process dynamic models, dynamic operability analysis is performed to determine the effects of dynamic behaviour on process and controller design. Steady-state operability analysis shows that the whey UF process is not able to mitigate the effects of high concentrations of true protein in the fresh whey feed. The ability of the process to mitigate the effects of disturbances is also adversely affected by long-term membrane fouling. Mid-run washing is therefore necessary to restore control performance after long periods of operation. Besides demonstrating the adverse effects of long-term membrane fouling on operability, dynamic operability analysis identifies the manipulated variables that can deliver the best control performance. It also indicates that control performance can be improved by installing equipment (e.g. buffer tanks) upstream of the process. Dynamic operability analysis shows that recycling of the retentate stream has a profound effect on the plant-wide dynamics and reduces significantly the achievable speed of process response under automatic control. However, retentate recycling is essential during operation to minimize membrane fouling. Although reducing the number of stages in the whey UF process can improve the achievable speed of process response under automatic control, process performance will fluctuate significantly from its desired level. A trade-off therefore exists between process performance and control performance that should be addressed during process and controller design.
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Mehdi, Ahad. "Effect of swirl distortion on gas turbine operability". Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/12129.

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The aerodynamic integration of an aero-engine intake system with the airframe can pose some notable challenges. This is particularly so for many military air- craft and is likely to become a more pressing issue for both new military systems with highly embedded engines as well as for novel civil aircraft configurations. During the late 1960s with the advent of turbo-fan engines, industry became in- creasingly aware of issues which arise due to inlet total pressure distortion. Since then, inlet-engine compatibility assessments have become a key aspect of any new development. In addition to total temperature and total pressure distortions, flow angularity and the associated swirl distortion are also known to be of notable con- cern. The importance of developing a rigorous methodology to understand the effects of swirl distortion on turbo-machinery has also become one of the major concerns of current design programmes. The goal of this doctoral research was to further the current knowledge on swirl distortion, and its adverse effects on engine performance, focusing on the turbo-machinery components (i.e. fans or compressors). This was achieved by looking into appropriate swirl flow descriptors and by correlating them against the compressor performance parameters (e.g loss in stability pressure ratios). To that end, a number of high-fidelity three-dimensional Computational Fluid Dynamics (CFD) models have been developed using two sets of transonic rotors (i.e. NASA Rotor 67 and 37), and a stator (NASA Stator 67B). For the numerical purpose, a boundary condition methodology for the definition of swirl distortion patterns at the inlet has been developed. Various swirl distortion numerical parametric studies have been performed using the modelled rotor configurations. Two types of swirl distortion pattern were investigated in the research, i.e. the pure bulk swirl and the tightly-wound vortex. Numerical simulations suggested that the vortex core location, polarity, size and strength greatly affect the compressor performance. The bulk swirl simula- tions also showed the dependency on swirl strength and polarity. This empha- sized the importance of quantifying these swirl components in the flow distortion descriptors. For this, a methodology have been developed for the inlet-engine compatibility assessment using different types of flow descriptors. A number of correlations have been proposed for the two types of swirl distortion investigated in the study.
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Książki na temat "Operability"

1

Rebecca, Cox, red. Communications inter-operability in a crisis. London: Royal United Services Institute, 2006.

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Jacobus, Mark J. Equipment operability during station blackout events. Washington, D.C: Division of Reactor and Plant Systems, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1987.

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General Electric Company. Industrial Automation Systems Dept. i Applied Science Associates. Industrial Division., red. Reliability, operability, and maintainability specification handbook. Butler, Pa: Applied Science Associates, Industrial Division, 1986.

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Graham, Ross. Specification for ship operability program SHIPOP. Dartmouth, N.S: Defence Research Establishment Atlantic, 1992.

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E, Deutsch Stephen, Armstrong Laboratory (U.S.). Logistics Research Division., BBN Corporation (Cambridge, Mass.) i University of Pennsylvania. Center for Human Modeling and Simulation., red. Operability model architecture demonstration: Final report. Wright-Patterson AFB, OH: Human Resources Directorate, Logistics Research Division, U.S. Air Force Armstrong Laboratory, 1997.

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Hahn, Jerold T. Operability and location of Wisconsin's timber resource. [Saint Paul, Minn.]: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1989.

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Ramadaan, Safa Yousif. Reliability analysis for hazard and operability studies. Birmingham: Aston University. Department of Chemical Engineering, 1987.

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(Firm), SunSoft, red. The ToolTalk service: An inter-operability solution. Englewood Cliffs, NJ: PTR Prentice Hall, 1993.

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R, Komar D., i George C. Marshall Space Flight Center., red. Reusable rocket engine operability modeling and analysis. [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, Marshall Space Flight Center, 1998.

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Hansen, Mark H. Operability and location of Michigan's timber resource. St. Paul, Minn: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1987.

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Części książek na temat "Operability"

1

Weik, Martin H. "operability". W Computer Science and Communications Dictionary, 1149. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_12835.

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Milisavljevic-Syed, Jelena, Janet K. Allen, Sesh Commuri i Farrokh Mistree. "Dynamic Operability Analysis". W Architecting Networked Engineered Systems, 147–83. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38610-8_5.

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Klemich, Kai-Sören, i Jens Eickhoff. "The FLP Platform Operability". W The FLP Microsatellite Platform, 25–71. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23503-5_2.

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Milisavljevic-Syed, Jelena, Janet K. Allen, Sesh Commuri i Farrokh Mistree. "Steady-State Operability Analysis". W Architecting Networked Engineered Systems, 113–46. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38610-8_4.

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SHAFAGHI, A., i S. B. GIBSON. "Hazard and Operability Study". W ACS Symposium Series, 33–39. Washington, D.C.: American Chemical Society, 1985. http://dx.doi.org/10.1021/bk-1985-0274.ch005.

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Eickhoff, Jens. "The Spacecraft Operability Concept". W Onboard Computers, Onboard Software and Satellite Operations, 185–232. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25170-2_13.

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Mukherjee, Siddhartha. "Hazard and Operability Study". W Process Engineering and Plant Design, 307–12. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9780429284656-13.

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Adams, Kevin MacG. "Availability, Operability, and Testability". W Nonfunctional Requirements in Systems Analysis and Design, 93–101. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18344-2_5.

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Visintainer, Robert, Václav Matoušek, Lionel Pullum i Anders Sellgren. "System Stability and Operability". W Slurry Transport Using Centrifugal Pumps, 301–15. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-25440-6_10.

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Shibata, Hirohito, i Kengo Omura. "Effects of Operability on Reading". W Why Digital Displays Cannot Replace Paper, 43–110. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-9476-2_5.

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Streszczenia konferencji na temat "Operability"

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"Operability and inoperability". W IEE Seminar INTER-operability or IN-operability, do standards help or hinder? IEE, 2001. http://dx.doi.org/10.1049/ic:20010080.

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Alston, B. "Railway safety viewpoint". W IEE Seminar INTER-operability or IN-operability, do standards help or hinder? IEE, 2001. http://dx.doi.org/10.1049/ic:20010081.

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van der Burg, R. "Notified bodies in Holland". W IEE Seminar INTER-operability or IN-operability, do standards help or hinder? IEE, 2001. http://dx.doi.org/10.1049/ic:20010082.

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Di Pietrantonio, L. "Towards a single European railway system - the benefits of conventional rail interoperability". W IEE Seminar INTER-operability or IN-operability, do standards help or hinder? IEE, 2001. http://dx.doi.org/10.1049/ic:20010083.

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Davis, R. "ERTMS and standards. Compliance or assurance?" W IEE Seminar INTER-operability or IN-operability, do standards help or hinder? IEE, 2001. http://dx.doi.org/10.1049/ic:20010084.

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Shiret, P. "The importance of standards within telecommunications networks". W IEE Seminar INTER-operability or IN-operability, do standards help or hinder? IEE, 2001. http://dx.doi.org/10.1049/ic:20010085.

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Benton, R., P. Horton i S. Oldham. "Data Fusion and Operability". W Warship 99. RINA, 1999. http://dx.doi.org/10.3940/rina.ws.1999.8.

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Bogdanovska, Gabriela, i Marcela Pavlickova. "Hazard and operability study". W 2016 17th International Carpathian Control Conference (ICCC). IEEE, 2016. http://dx.doi.org/10.1109/carpathiancc.2016.7501071.

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Brown, N. R. "Operability needn't cost more". W International Conference on People in Control (Human Interfaces in Control Rooms, Cockpits and Command Centres). IEE, 1999. http://dx.doi.org/10.1049/cp:19990179.

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Plotkin, Paul, Matt Coffman i Robert Engel. "Operability/Maintainability Applications of Design". W ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-226.

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This paper describes the comprehensive RAM process that is being utilized throughout the Design, Procure, Construct, Operate and Maintain phases of the FPL/Lauderdale Repower Project. A special focus on the transfer of the design analysis to the Operate and Maintain phase is also described herein.
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Raporty organizacyjne na temat "Operability"

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Marella, J. R. Purge ventilation operability. Office of Scientific and Technical Information (OSTI), kwiecień 1995. http://dx.doi.org/10.2172/122015.

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Briscoe, Howard, Jean MacMillan, William Ferguson i Richard W. Pew. Operability Assessment System (OASYS). Fort Belvoir, VA: Defense Technical Information Center, lipiec 1996. http://dx.doi.org/10.21236/ada319508.

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Lewis, W. S. Sludge stabilization operability test report. Office of Scientific and Technical Information (OSTI), listopad 1994. http://dx.doi.org/10.2172/10105049.

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Parazin, R. E. Caustic addition system operability test procedure. Office of Scientific and Technical Information (OSTI), listopad 1994. http://dx.doi.org/10.2172/10106958.

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RISENMAY, H. R. INERT Atmosphere confinement operability test procedure. Office of Scientific and Technical Information (OSTI), luty 1999. http://dx.doi.org/10.2172/781514.

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Hardaway, G. M. The Smart Weapons Operability Enhancement Program. Fort Belvoir, VA: Defense Technical Information Center, kwiecień 1994. http://dx.doi.org/10.21236/ada277685.

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Meloy, R. T. Contaminated liquid drain system operability test. Office of Scientific and Technical Information (OSTI), kwiecień 1995. http://dx.doi.org/10.2172/65028.

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CORPS OF ENGINEERS WASHINGTON DC. Construction: Biddability, Constructibility, Operability, and Environmental Review. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1994. http://dx.doi.org/10.21236/ada404929.

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Hansen, Mark H., i Jerold T. Hahn. Operability and location of Michigan's timber resource. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1987. http://dx.doi.org/10.2737/nc-gtr-116.

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Hahn, Jerold T., i Mark H. Hansen. Operability and location of Wisconsin's timber resource. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1989. http://dx.doi.org/10.2737/nc-gtr-134.

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