Дисертації з теми "Mud hydraulics"
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Olofsson, Petter, and Jimmy Utterström. "Hydraulstyrning med konfiguration över Bluetooth." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-122408.
Повний текст джерелаThis report encompasses the development of a standalone drive card with an accompanying mobile application for control and configuration of a hydraulic system. The purpose of the project was to - according to an inquiry from the client Bosch Rexroth - investigate whether the pump control module (PCM) from the existing Spider 3 control system could be used as a standalone module. Hardware including a Bluetooth module was assembled and connected to the PCM to allow communication over Bluetooth Low Energy (BLE). A mobile application where developed in Android Studio to allow configuration from a mobile device. The software of the PCM were modified to communicate with the Bluetooth hardware over CAN and also for allowing analog control of the hydraulic pump through a current controlled input.The basic demands for the system were met and a working prototype could be demonstrated at the end of the project. The prototype did show large potential but was lacking some functionality which would be desirable for a commercial product.
Persson, Daniel, and Eric Vinjegaard. "Undersökning av materialegenskaper för nytt segjärn i jämförelse med traditionellt." Thesis, Högskolan Väst, Avd för maskinteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-5348.
Повний текст джерелаThis report describes a study and comparison of two different types of ductile iron. Thetwo materials that have been studied have been the ductile iron used in Parker Hannifin'scurrent hydraulic motors and a new ductile iron, whose mechanical properties are said tobe more advantageous. The goal of this study was to obtain a reliable comparison of thedifferent materials and determine if there were clear grounds for initiating the process of achange of material in certain components of Parker Hannifin’s products.Comparisons between the mechanical properties of the materials were based partly oninformation that was already available and partly on data collected through machining trails.The wear on the tools after milling was studied along with the cutting force from variouskinds of cutting data. Residual stresses after the operation in both materials were measuredby an X-ray diffractometer.The results yielded no significant indication that a change of material would result in lowerproduction cost, however, analyses showed that the new material can withstand beingprocessed faster than the traditional ductile iron and that more studies should beconducted. After analyzing the mechanical properties, such as strength, hardness, hardnessvariation and stiffness, conclusions could be drawn. It turned out that the new ductile ironhad higher strength and more uniform hardness, but it also had lower stiffness. Thestiffness of the material is an important factor because if the materials do not havesufficient rigidity, leakage can occur in hydraulic motors. Measurements of the cutting forceof the two materials indicated that there could be a higher standard deviation, orfluctuation of the cutting force during milling of the traditional ductile iron. Since thesevariations only appeared a few times, it is difficult to conclude that the new ductile ironwould be more advantageous when it comes to machining. To be able to draw that kind ofconclusion would require more collected data.
Carlsson, Lisa. "Tillförlitligheten i beräknade dimensionerande flöden i två mindre vattendrag med trånga sektioner." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-206944.
Повний текст джерелаIn Sweden there is currently an accepted method for determining the design floods for dams which is described in The Swedish Design Flood Guidelines. The theoretical calculations of the design floods for dams associated with Flood Design Category I are based on the HBV model, a conceptual hydrological model that describes the interaction between the meteorological and hydrological conditions within a basin. Conceptual hydrological models are based on the water balance and are used to determine runoff to streams, lakes or other bodies of water. Conceptual hydrological models do not take explicit account for the geometry of the watercourse. Narrow sections in natural streams may prevent water flow and cause impoundment upstream from the narrow section. Following that, a part of the flow peak can be retained in the terrain and thereby attenuated and delayed. Hydraulic models describe the flow of water through the watercourse. High resolution elevation data is the foundation of a hydraulic model and hydraulic models thus take into account the basin topography as well as the watercourse bathymetry. The objective of this study was to analyze the reliability of design floods that have been determined according to The Swedish Design Flood Guidelines. By establishing hydraulic models of two specific streams affected by narrow sections it could be examined whether the narrow sections cause flow attenuation and whether the flow attenuation depends on the size of the water flow. The areas which were the subject of this study were a subsection of River Lagan and part of River Bolmån, which is River Lagan’s largest tributary. The results of the hydraulic model simulations showed that the flow peaks were attenuated and that it was the narrow sections that caused the main flow attenuation. Furthermore, the results showed that the relative attenuation depends on the size of the inflow in the hydraulic models. The relative attenuation of the design floods was 1.2 % and 2.0 % at River Lagan and 6.7 % at River Bolmån. The relative attenuation of the design flood was thus marginal at River Lagan. The fact that the design floods nevertheless were attenuated at both areas which were the subject of this study should be reason enough to review the method for the determination of design floods for dams associated with Flood Design Category I and examine whether it is possible to include hydraulic modeling in today’s conventional calculation methodology.
Garcia, Luis Jimenez, Guzman Osnar Iruri, and Sissi Santos Hurtado. "Hazard map based on the simulation of sludge flow in a two-dimensional model, Case Quebrada Malanche-Punta Hermosa -Lima-Perú." Institute of Electrical and Electronics Engineers Inc, 2020. http://hdl.handle.net/10757/656417.
Повний текст джерелаThis research presents the numerical simulation to reproduce the transport and deposition processes of the sludge flow on March 15, 2017, strongly impacting the town of Pampapacta in Punta Hermosa-Peru.The debris flow initiation process in the basin was represented by hydrographs obtained from the estimated volumes of stormwater runoff and solid materials. The sludge flow was modeled in Flo2D to calculate hazard maps with the discharge event and others with different return periods.The numerical simulation results show acceptable results in relation to what happened. The model used to assess the hazard due to debris flow can predict and delineate, with acceptable precision, potentially hazardous areas for a landslide. The application of the proposed methodology to assess the hazard of disasters due to debris flows in basins and streams is useful to understand the extent of the impact of the mud flow during extreme weather events, as well as to develop emergency plans and formulate disaster policies.
Elwood, David E. Y. "Hydraulic fracture experiments in a frictional material and approximations for maximum allowable mud pressure." Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1343.
Повний текст джерелаPanagiotopoulos, Ioannis Polykarpos. "Clay influence on the threshold of movement and physical parameters of sand-mud deposits." Thesis, University of Southampton, 1996. https://eprints.soton.ac.uk/361139/.
Повний текст джерелаErlandsson, Marie. "Överbelastningsproblem för avloppsledningsnät och kostnadseffektiva åtgärder : En fallstudie med förenklad hydraulisk modell." Thesis, Uppsala University, LUVAL, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-128865.
Повний текст джерелаMånga svenska kommuner har idag problem med överbelastade avloppsledningssystem. Det kan bland annat resultera i källaröversvämningar i närbelägna fastigheter, överbelastade reningsverk eller bräddningar till recipienten. För att motverka dessa effekter kan olika åtgärder vidtas. Åtgärderna kan vara olika lämpliga beroende på typ av område och kostnaderna för genomförandet kan variera kraftigt och ha olika miljöpåverkan. Detta innebär att det är viktigt att väga samman effektiviteten av olika åtgärder, deras miljöpåverkan, kundnytta och kostnad.
Syftet med examensarbetet var att med hjälp av ett hydrauliskt modelleringsverktyg (PCSWMM) studera ett antal typområden och ta fram en förenklad modell. Modellen ska enkelt kunna anpassas till olika områden och ge en översiktlig bild av situationen i områdets ledningssystem. Därmed kan eventuella överbelastningsproblem lokaliseras och en kostnadseffektiv lösning testas.
En hydraulisk modell utvecklades för Viksängsvägens avrinningsområde i Södertälje kommun. Det är ett äldre område med underdimensionerade ledningar vilket orsakar problem vid hård belastning. Effekten av olika åtgärder testades i modellen och en kostnadsanalys gjordes för att utreda vilken åtgärd som var mest kostnadseffektiv.
En grenad modell visade sig ge bäst beskrivning av Viksängsvägens avrinningsområde. Det var en förenklad modell som gick relativt snabbt att sätta upp för ett nytt område och som tog hänsyn till avrinningsvolym, ledningskapacitet och ledningssystemets struktur. Modellen kräver dock en del information om ledningssystemets uppbyggnad och de hårdgjorda ytornas fördelning över området.
Den åtgärd som rekommenderades för Viksängsvägens avrinningsområde var att bygga utjämningsmagasin i anslutning till Viksängsvägen. Detta för att kostnaden var relativt liten jämfört med andra åtgärder samt för de positiva effekter åtgärden har på miljön och människorna som bor och vistas i området.
Ohlsson, Philip, and Alexander Tived. "Analys av Hydraulic Hydro Storage för mekanisk energilagring samt jämförelse med andra storskaliga mekaniska energilagringssystem." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233218.
Повний текст джерелаA comparison between different methods of mechanical energy storage was made. The newcomer Hydraulic Hydro Storage (HHS) was evaluated and compared to Compressed Air Energy Storage and Pumped Hydro Storage (PHS) with respect to efficiency, costs, capacity, and lifecycle. Potential problems seismic stability and sealing were investigated further. The analysis was made thru literature study, calculations, interview with the founders and critical examination of their website and information. With the growing energy market comes the problems with energy storage, and our study aims to evaluate if HHS would complement the future energy market. The results showed good chances to solve sealing and seismic stability issues. Comparatively Hydraulic Hydro Storage excels at efficiency, lifespan, environmental impact and price/MWh. It performed average on capacity and area used although the former might see a substantial increase within decades. Additionally HHS is deemed to complement other mechanical energy solutions in a growing renewable energy market.
Tercan, Erdem. "Managed Pressure Drilling Techniques, Equipment &." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611824/index.pdf.
Повний текст джерелаincluding stuck pipe, lost circulation, and excessive mud cost. In order to decrease the percentage of non-productive time (NPT) caused by these kind of problems, the aim is to control annular frictional pressure losses especially in the fields where pore pressure and fracture pressure gradient is too close which is called narrow drilling window. If we can solve these problems, the budget spent for drilling the wells will fall, therefore enabling the industry to be able to drill wells that were previously uneconomical. Managed Pressure Drilling (MPD) is a new technology that allows us to overcome these kinds of drilling problems by controlling the annular frictional pressure losses. As the industry remains relatively unaware of the full spectrum of benefits, this thesis involves the techniques used in Managed Pressure Drilling with an emphasis upon revealing several of its lesser known and therefore less appreciated applications.
Lauri, André. "Mekanisk kopplingslösning för baxning med Hägglunds hydraulmotorer." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-186181.
Повний текст джерелаBosch Rexroth develops and manufactures Hägglund’s hydraulic motors. The motors are used in many industrial applications. Nowadays, the motors are also used for inching, and the goal of this thesis was to develop a coupling concept for their motor series CB and develop manufacturing basis for this coupling. The purpose of this thesis was to establish a coupling solution between the motor and the costumer shaft for the motors CB 400 and CB 840. At present, there is the smaller motor of the CA series for inching, but customers would like to use the motor of the CB series, which can handle higher torques than the motors of the CA series. Since the division applies for the CB 400 and the CB 840, two different sizes of couplings and shafts are required. At first, six coupling concepts were developed. With a decision making by staff at Bosch Rexroth, the four most relevant concepts were then put into a comparison table to be scored according to different criterias. Of the four concepts in the comparison table, concept three was chosen to work on further. This concept involved the existing inching solution. The task was then to dimension it for the torques that the CB 400 and CB 840 motors can create. Hence the same materials and standards were adopted on the two new couplings as for the existing coupling of the CA series. Bosch Rexroth today has access to all documents and basis that have been created for both couplings and they will continue to work on these in order to be able to provide a finished product in the long term.
Forslund, Samuel. "Analys av vattenhydraulisk bergborrhammare i kombination med ackumulator." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69690.
Повний текст джерелаGjerstad, Lindgren Johanna. "Kartläggning av översvämningar med hydraulisk modellering och information från sociala medier : En fallstudie över Hallsberg." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-298418.
Повний текст джерелаFlooding caused by heavy rain has in the recent past affected several cities around the world. Because of climate change heavy rains are likely to increase in intensity and the risk of flooding may therefore increase in the future. The consequences of heavy rains can be studied with hydraulic models, which enables simulation of future scenarios and provides information regarding both flood spread and the course of events. The making of reliable models that generate trustworthy results requires great access to information about water depths and the extent of previous floods. Data from traditional monitoring systems are usually not sufficient for this purpose and information from the public can in these cases be valuable. In recent years studies have explored how data can be extracted from pictures and movies posted on social media by witnesses to catastrophes like floods. The water spread and depth can be estimated from images and movies on these platforms. This study aimed to investigate how information from social media can be used to map the floods and how it can be utilized to improve hydraulic modelling of floods. A hydraulic model was created of Hallsberg, which suffered severe floods after heavy rains in 2015. The flood was also mapped with information of water depths that were estimated from pictures and movies on social media. The water spread and depth estimated by the two methods were then compared with each other. The hydraulic model consisted of a 2D-model describing the runoff in Hallsberg and a 1D-model of the river Storån that runs through the city. The models were linked together so that the water was allowed to flow between the models and the interaction between surface runoff and water flow in Storån could be described. The flood map generated with information from social media was created by interpolation of water depths estimated at various locations. The information from social media gave a good overview of the severely affected areas in central Hallsberg and was utilized in the process of making and improving the model. The water depths estimated with information from social media were slightly greater than those generated by the hydraulic model, which might be due to that the simulated scenarios differed slightly from the actual flood event in 2015. The water depth estimated from social media was a useful complement to other available data. The information can be used to improve models and control the quality of the results. The extraction and utilization of information from social media is an area of great potential and there might be much to gain from investigating this further in the future.
Sharma, Shekar. "Evaluating Leachability of Residual Solids Generated from Unconventional Shale Gas Production Operations in Marcellus Shale." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50514.
Повний текст джерелаMaster of Science
Holland, Austin Adams. "Imaging Time Dependent Crustal Deformation Using GPS Geodesy And Induced Seismicity, Stress And Optimal Fault Orientations In The North American Mid-Continent." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/332903.
Повний текст джерелаEriksson, Daniel. "Mätning av hydraulisk konduktivitet med Lewis metod : En utvärdering av tillförlitligheten och användbarheten hos en enkel metod för mätning i olika jordarter." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-127311.
Повний текст джерелаOlsson, Karin. "Jordläkande växter : växters kapacitet att med fytoremediering rena förorenad mark - med exempel och förslag för Ockelbo järnvägsstation." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-11163.
Повний текст джерелаKristiansen, Pontus, and Roman Postnikov. "Tillståndsövervakning av rullningslager med hjälp av E-näsa." Thesis, Luleå tekniska universitet, Drift, underhåll och akustik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71064.
Повний текст джерелаAt present, there is no standardized method of measuring a device's condition with thehelp of odors. In condition monitoring of rolling bearings, vibration measurement isthe most dominant method. In case of vibration measurement, temperature monitoringis used in some cases to get a better insight into the condition of the bearing. In thiswork, it is investigated whether an electronic nose can determine the condition of arolling bearing.Before any measurements began, an electronic nose is assembled in a housingconsisting of a circuit board, metal oxide sensors and a fan for stearing odors with aconstant flow towards the sensors. The electronic nose is controlled by an ArduinoNano which is a microcontroller. In addition to the e-nose, a unit is connected to twotemperature sensors and a humidity sensor controlled by an Arduino UNO. The unit'spurpose is to monitor the status and to look for any kind of correlation with the e-nosein case of any possible findings. Destructive specimens of ball bearings are performedto see if the e-nose responds prior to a bearing failure. Tests are conducted in an openand closed environment and three different oils are used to lubricate the bearings.This to see if the e-nose acts differently depending on the oil that is used. Aninvestigation is conducted if the electronic nose can separate the three different typesof oils that is used in the destructive bearing tests. To evaluate the measurementresults, Excel and Minitab are used, where principal component analysis is performedon all measurement data. After all bearing tests have been performed, a follow-up ofthe rolling bearings condition is performed, this through an optical microscope.The report shows that using the PCA analysis method, it appears that the electronicnose could distinguish between hydraulic oil, engine oil and gear oil. In the PCA forthe different measurement series the results did not become identical, but clusterdivisions became clear in all measurement series. Completed study showed that withthese bearing failures and temperatures, it is not possible to determine the condition ofthis ball bearer using an electronic nose. Because the specific gas sensors used for thee-nose did not give any kind of impact during the measurements. On the other hand,the electronic nose responded to a total failure of a ball bearing, which is too late in apreventative maintenance perspective. Therefore, the electronic nose cannot be usedfor condition monitoring of the specific ball bearing used in this study.
Stenmalm, Niklas, and Fredrik Hammargren. "Vidareutveckling av teststation för hydrauliska fixturer : Med fokus på ergonomi och design." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-104634.
Повний текст джерелаLow manufacturing costs are an important competitive factor in the manufacturing industry. A way to achieve a more automated and cost-effective manufacturing industryis is to use hydraulic fixtures. When these fixtures are manufactured and assembleda function test and adjustment are needed before they are delivered and startbe used in series production. The market lacks an ergonomic, user-friendlyand well-adapted test station for hydraulic fixtures. The purpose and goal are to create an understanding of how to achieve an ergonomic and user-friendly test station for hydraulic fixtures, to ultimately present a virtual prototype as a total solution where both hydraulic pressure and flow are adjustable. The work will only affect the test station and not the hydraulic fixtures which it is connected. To achieve this, relevant theories in product development and ergonomics are used. The implementation is based on different product development steps, which lead to one total solution. After compiling a detailed design of the test station components, a virtual prototype is presented as the end result
Ndongo, Alexis. "Contexte sédimentologique et tectonique du bassin paléoprotérozoïque de Franceville (Gabon) : structures de surpression fluide, bitumes et minéralisation uranium." Thesis, Dijon, 2016. http://www.theses.fr/2016DIJOS068/document.
Повний текст джерелаMetallogenic deposits within paleproterozoic basins depend on generation and migration of fluids. The aim of this study is to provide a better understanding of tectonic, sedimentological and diagenetic setting of the uranium deposits in the Franceville basin and to characterize hydraulic fracturing impact on fluid migration processes in sandstone reservoirs.Tectonic study define the N180-170° transfer faults, associated with Archean tectonic and the N110-120° longitudinal normal faults. These two fault directions split the Franceville basin into small sub-basins. The longitudinal normal faults are associated with footwall anticlines and hanging wall synclines. The uranium deposits of Franceville basin are located in footwall anticlines of longitudinal normal faults.Sedimentological analysis allows to describe four depositional environments: Fluvial (lower FA), deltaic (middle FA), tidal (upper FA), and open marine environments (FB). Facies distribution in the FA-FB transition promotes the establishment of permeability barriers. These latter are responsible of the increase in fluid pressure and of the formation of fluid pressure structures (dykes, stylolites, quartz veins), in footwall anticlines of longitudinal normal faults. Increase in fluid pressure allows the migration of uranium-fluids, and hydrocarbon from the deep basin to the footwall anticline. Hydraulic fracturing processes lead the precipitation of uranium mineralization, associated with bitumen, in microfractures
Berro, Mouhammed Jandal. "Development and testing of alternative methods for speeding up the hydraulic data transmission in deep boreholes." 2018. https://tubaf.qucosa.de/id/qucosa%3A33106.
Повний текст джерелаJAW, JIANN-FUU, and 趙健甫. "Thermal-Hydraulic Analysis of Loss of Residual Heat Removal During Mid-Loop Operation of PWR." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/93439285445248594581.
Повний текст джерелаWu, Ming-Sung, and 吳名松. "Study of the embedded network chip with the PID mod in an electro-hydraulic servo pressure controller." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/09524506420226051663.
Повний текст джерела樹德科技大學
電腦與通訊研究所
92
Apparently the Injection Molding Facilities had been improved with higher speed, electrification, and micro-molding in the recent years. Further more, with the basic function and technical guidepost been kept as they were, the technique of Electro-Hydraulic Servo has been developed toward with simplified structure, higher reliability, and lower production costs. And the Electro-Hydraulic Servo Controller is playing the main role among all. The embedded system has characteristics , such as operating system software of small , special-purpose strong , simplified , high practicability of system of systems ,etc., it is exactly the factory and indispensable function of home automation in the future, in addition, as the internet network develop, is it take shape equipment make apparatus control system , person who actuate , and measuring tool , network of ability future to make, make production management and control networking, This stydu is planning to build up a Digital Velocity and Pressure Controller (DVP) with the compatible parameter-setting software in order to reach the goal of high precision and lowering costs. The embedded network of “System On A Chip (SOC)” will be used as the CPU to ensure the functions of immediate operating system, multi-tasks, and multi-threads in order to secure a set of SOC which is with excellent functions in networks and the realization of the relating controls theoretically. This research is going to use such a SOC, the related electronic components of digital and analog converter circuit, and multi-sets of digital proportional-integral-derivative controlling theory, to complete the controller of digital pressure controller. Keyword: Injection Molding , electro-hydraulic servo , embedded system, proportional-integral-derivative controller, digital pressure controller