Дисертації з теми "STEAM PIPE"
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Bakhurji, Khalid A. "Cascade control for a steam-heated double-pipe heat exchanger." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1596967.
Повний текст джерелаThe goal of this thesis is to create the experimental setup and the necessary instrumentation for the temperature control of a double-pipe heat exchanger. The heat exchanger, located at the Chemical Engineering Control Laboratory at the California State University, Long Beach, has been used in the past for temperature control experiments, in which the manipulated variable was the incoming water flow. In the control experiments performed for the current work, the manipulated variable is the incoming steam pressure. For this purpose cascade control has been used, with an inner loop controlling the steam pressure setpoint, and an outer loop controlling the water outlet temperature. Despite major fluctuations in the steam pressure supply and inappropriate sizing of a control valve, the experimental results show that the designed cascade control can track the temperature setpoint and reject load-induced disturbances satisfactorily. System parameters are obtained via experimental modeling through open loop experiments. A LabView-based data acquisition and control program has been written and implemented for acquiring and processing sensor outputs, and for providing control commands to the final control elements. Several controller parameter tuning methods, such as IMC, ITAE, Cohen-Coon, and Ziegler-Nichols, were implemented and evaluated experimentally through a set of performance indices.
Pieters, Alfred Cornelius. "Whip restraint for a steam pipe rupture event on a nuclear power plant / Alfred Cornelius Pieters." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9391.
Повний текст джерелаThesis (MIng (Mechanical Engineering))--North-West University, Potchefstroom Campus, 2013
Kane, Stephen James. "Two-phase flow of water and steam in a liquid metal fast breeder reactor pipe." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261438.
Повний текст джерелаDu, Preez Christiaan. "Effect of graphitization on the static mechanical properties of service exposed ASTM A516 Gr. 65 steam pipe metal." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/22277.
Повний текст джерелаTossey, Brett M. "Steam Oxidation Resistance of Shot Peened Austenitic Stainless Steel Superheater Tubes." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306261300.
Повний текст джерелаLe, Kieu Hiep [Verfasser]. "Multiscale modeling of non-isothermal fluid transport in porous media : applications to loop heat pipe evaporator and superheated steam drying / Kieu Hiep Le." Magdeburg : Universitätsbibliothek, 2017. http://d-nb.info/1155824369/34.
Повний текст джерелаKlíma, Martin. "Návrh konstrukce trubkového svazku generátoru páry." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230296.
Повний текст джерелаLobo, Carlos Alexandre O. C. (Carlos Alexandre Orosco Caelho). "Filling strategies for avoiding water hammer in steam filled pipes." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14484.
Повний текст джерелаPerez-Barbante, Dezire Q'anna. "IN-PLANE CYCLIC SHEAR PERFORMANCE OF PIPE STEM REINFORCED COB WALL." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2116.
Повний текст джерелаSalami, Najdat. "Gasification of Pine Wood Chips with Air-Steam in Fluidized Bed." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-234253.
Повний текст джерелаYell, M. D. "Steam compression in the single screw compressor." Thesis, University of Leeds, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372575.
Повний текст джерелаOlsen, Colin Andreas Dupont. "Empirical process modeling of the acid catalyzed steam pretreatment of radiata and lodgepole pine." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43807.
Повний текст джерелаNakka, Ravi Kumar Nasrazadani Seifollah. "Flow accelerated corrosion experience at Comanche Peak Steam Electric Station." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-6072.
Повний текст джерелаSevanto, Sanna. "Tree stem diameter change measurements and sap flow in Scots pine." Helsinki : University of Helsinki, 2003. http://ethesis.helsinki.fi/julkaisut/mat/fysik/vk/sevanto/.
Повний текст джерелаReeves, Christopher D. "Effectiveness of Elevated Skid Trail Headwater Stream Crossings in the Cumberland Plateau." UKnowledge, 2012. http://uknowledge.uky.edu/forestry_etds/7.
Повний текст джерелаJiang, Lichun. "An evaluation of modeling techniques for stem taper, volume and weight for yellow-poplar and red pine in West Virginia." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5143.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains ix, 111 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
Emebiri, Livinus Chinenye, and -. "Detection and Genetic Mapping of Quantitative Trait Loci Influencing Stem Growth Efficiency in Radiata Pine." The Australian National University. Department of Forestry, 1997. http://thesis.anu.edu.au./public/adt-ANU20010822.164445.
Повний текст джерелаNakka, Ravi Kumar. "Flow Accelerated Corrosion Experience at Comanche Peak Steam Electric Station." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc6072/.
Повний текст джерелаSpeer, James H., and Richard L. Holmes. "Effects of Pandora Moth Outbreaks on Ponderosa Pine Wood Volume." Tree-Ring Society, 2004. http://hdl.handle.net/10150/262634.
Повний текст джерелаRune, Göran. "Instability in plantations of container-grown Scots pine and consequences on stem form and wood properties /." Uppsala : Dept. of Forest Products and Markets, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s281-ab.html.
Повний текст джерелаMcEwen, Amiana Marie. "Abundance, Distribution, and Geometry of Naturally Occurring Macropores in Stream Banks." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/95948.
Повний текст джерелаMS
Loubser, Karl Albie. "An experimental study of an inherently-safe, natural circulating, flash-tube type system for a nuclear reactor steam supply concept." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/96050.
Повний текст джерелаENGLISH ABSTRACT: This project investigates aspects of a novel inherently safe nuclear power steam supply system as safety is of paramount importance. The system envisaged has unique features namely: a) a two-phase flow flash-tube type natural circulating primary loop (also the secondary radioactive particle containment); b) a twophase flow thermosyphon heat pipe type heat exchanger secondary loop is used to transfer heat from the primary loop to the steam generators, thereby physically separating the two flow streams from one another; c) a natural convection air cooled condenser for the removal of the reactor’s residual heat; d) a unique core using TRISO type fuel (acting as the primary radioactive particle containment) with life of at least 8.9 years; e) a steel containment vessel acting as a tertiary radioactive product containment; f) a concrete containing structure with air vents to allow air to pass over the main steel containment vessel for cooling purposes in the case of an emergency, and for the removal of parasitic heat during operation. In particular the primary and secondary loops of the proposed system are investigated. This is done by design, construction and testing of a small scale experimental set-up of the primary and secondary loops as well as the development of theoretical models for the two loops. A literature survey focusing on nuclear technology, thermosyphon loops, natural circulating loop instabilities, heat pipes, and two-phase flow modelling is presented to give a brief overview of the technologies as well as tools used in the work undertaken. Observations of the inside flow behaviour of the primary loop experimental set-up were made possible by windows providing many insights into the inner workings, such as plume formation and geysering. The transient response of the secondary heat pipe loop start-up is also investigated. A thermal resistance theoretical model was developed for the secondary loop using heat transfer formulae from theory as well as experimentally semiempirical correlated formula. Different states of operation of the secondary loop were observed during testing with the theoretical model of the condensing regime correlating well, two-phase regime correlating acceptably and liquid regime correlating poorly to experimental results and thus were modelled using an experimentally determined overall heat transfer coefficient. The secondary loop model of the liquid regime is coupled with the primary loop theoretical model to predict the system’s performance. A homogeneous, one-dimensional, simple theoretical model for the primary loop was derived and computer simulated. The results did not compare well with experimental results for single phase flow and failed to capture the onset of two-phase flow. The assumptions of one dimensional model with a unidirectional flow, a hydrostatic pressure problem, a constant volumetric flow rate and the inability of the implementation of the code to handle expansion are noted as some of the flaws in the theoretical model. The following recommendations are made: a more advanced design of the pressuriser should be incorporated into the experiment; the secondary loop’s theoretical model should be characterised under a broader set of operating conditions; the computer program can be used as the basis for further research and implementation of alternative solution algorithms and models.
AFRIKKANSE OPSOMMING: Hierdie projek ondersoek aspekte van ’n ongewone, essensieel veilige kernkrag stoomtoevoer-stelsel, omdat veiligheid van kardinale belang is. Die stelsel wat voorgestel is, het unieke eienskappe, naamlik: a) ’n twee-fasevloei flits-buistipe natuurlik sirkulerende primêre lus (wat ook die sekondêre inperking van radioaktiewe materiaal bevat); b) ’n twee-fasevloei termo-heweleffek sekondêre lus hitte-pyp hitte-uitruiler word gebruik om die hitte vanaf die primêre lus oor te dra na die stoomkragopwekkers en daardeur word die twee strome se vloei fisies geskei van mekaar; c) ’n natuurlike konveksie lugverkoelde kondensor word gebruik vir die verwydering van die reaktors se oortollige hitte; d) ’n unieke kern gebruik TRISO-tipe brandstof (wat as die primêre inperking van radioaktiewe materiaal optree) met ’n lewe van minstens 8.9 jaar; e) ’n inperkingshouer van staal wat optree as ’n tersiêre radioaktiewe produkhouer; f) ’n betonstruktuur met lugventilasie om toe te laat dat lug oor die hoof staalhouer vloei vir verkoeling in ’n noodgeval, en vir die verwydering van parasitiese hitte tydens werking. Hoofsaaklik word die primêre en sekondêre lusse van die voorgestelde stelsel ondersoek. Dit word gedoen deur die ontwerp, konstruksie en die toets van ’n eksperimentele opstelling van die primêre en sekondêre lusse op klein skaal, sowel as die ontwikkeling van teoretiese modelle vir die twee lusse. ’n Literatuurstudie wat fokus op kerntegnologie, termo-heweleffeklusse, natuurlik sirkulerende lus instabiliteit, hitte-pype, en twee-fase vloeimodellering word aangebied om ’n kort oorsig te gee van die tegnologie, sowel as gereedskap gebruik in die werk wat onderneem is. Om die interne vloeigedrag van die primêre lus se eksperimentele opstelling waar te neem, word daar gebruik gemaak van vensters wat dien as ’n manier om die innerlike werking van die proses soos pluimvorming en die kook van die water in die warmwaterkolom te toon. Die oorgangsreaksie van die sekondêre hittepyplus aanvangs is ook ondersoek. ’n Teoretiese termiese weerstandmodel is ontwikkel vir die sekondêre lus met behulp van hitte-oordragformules waarvoor hitte-oordragteorie gebruik is, wat met eksperimentele semi-empiriese formules gekorreleer is. Verskillende toestande van die sekondêre lus se werking is waargeneem gedurende die toetse. Die teoretiese model het goed met die kondensasiestaat gekorreleer, terwyl by die twee-fasewerkswyse aanvaarbare korrellasies aangetref is en die uiteindelike vloeitoestand swakker gekorrelleer het met eksperimentele resultate en dus gemodelleer is met behulp van die NTU-effektiwiteitsmetode. Die sekondêre lusmodel van die vloeistoftoestand is gekoppel met die primêre lus teoretiese model om die werking van die stelsels te voorspel. ’n Homogene een-dimensionele eenvoudige teoretiese model van die primêre lus is afgelei en ’n rekenaar simulasie is uitgevoer. Die resultate vergelyk nie goed met die eksperimentele resultate vir enkelfasevloei en kon nie die aanvang van twee-fasevloei beskryf nie. Die aannemings van ’n een-dimensionele model met eenrigting vloei, ’n hidrostatiese druk probleem, ’n konstant volumetries vloeitempo en die onvermoë van die implementering van die kode om uitbreiding te hanteer is bekend as ’n paar van die foute in die teoretiese model. Die volgende aanbevelings word gemaak: ’n meer gevorderde ontwerp van drukreëlaar moet in die eksperiment ingesluit word; die sekondêre lus se teoretiese model moet gekenmerk word onder ’n wyer stel bedryfsomstandighede, en die rekenaar program kan gebruik word as die basis vir verdere navorsing en die implementering van alternatiewe algoritmes en modelle.
Attaoui, Pascale. "Analyse d'images obtenues par balayage de surface avec un capteur ponctuel courants de Foucault." Gif-sur-Yvette : Commissariat à l'énergie atomique, 1994. http://catalogue.bnf.fr/ark:/12148/cb35748414t.
Повний текст джерелаMiller, Dominique. "Contribution à l'étude et à la réalisation d'une sonde multi-éléments à courants de Foucault et de l'instrumentation associée, destinée à la détection et la reconstruction tomographique de défauts dans les tubes de générateurs de vapeur." Cachan, Ecole normale supérieure, 1998. http://www.theses.fr/1998DENS0039.
Повний текст джерелаBarbotteau, Yves. "Recherche des modifications de caractéristiques dans des biomatériaux en verre bioactif par des méthodes nucléaires et physico-chimiques." Phd thesis, Clermont-Ferrand 2, 2002. http://www.theses.fr/2002CLF21360.
Повний текст джерелаKlinka, Karel, Han Y. H. Chen, Qingli Wang, and Christine Chourmouzis. "Height growth curves and site index tables for subalpine fir, Engelmann spruce, and lodgepole pine in the ESSF zone of BC." Forest Sciences Department, University of British Columbia, 1998. http://hdl.handle.net/2429/768.
Повний текст джерелаPtáček, Ondřej. "Návrh dvoutlakého vertikálního kotle na odpadní teplo za plynovou turbínou na zemní plyn." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319246.
Повний текст джерелаRichter, Štěpán. "Studie možnosti vybudování malých vodních nádrží v lokalitě u Vyškova na Moravě." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225619.
Повний текст джерелаMajek, Dee. "Big Content's Big Blunders : Anti-piracy measures in the entertainment and copyright industries." Thesis, Stockholms universitet, Institutionen för mediestudier, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-107225.
Повний текст джерелаMed, Lukáš. "Návrh dvoutlakého horizontálního kotle na odpadní teplo." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241924.
Повний текст джерелаMorávek, Aleš. "Hydraulický agregát pro regulaci parní turbíny." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254353.
Повний текст джерелаBlinková, Magdaléna. "Založení stavby ve složitých základových poměrech." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265337.
Повний текст джерелаGuibert, Geoffroy. "Etude par des méthodes nucléaires et physico-chimiques de la contamination des tissus situés autour de biomatériaux métalliques implantés." Phd thesis, Clermont-Ferrand 2, 2004. http://www.theses.fr/2004CLF21506.
Повний текст джерелаSHANKER, PRASHANT KUMAR. "THERMAL AND COST ANALYSIS OF INSULATING MATERIALS FOR STEAM PIPE." Thesis, 2023. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19968.
Повний текст джерелаHuang, Tsung-Yuan, and 黃琮元. "Computer Aid Design and Experiments on Double Pipe Heat Exchangers Subject to Ultra-Supercritical Steam." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/39537050334084050626.
Повний текст джерела國立臺灣海洋大學
機械與機電工程學系
100
The increase in the temperature and pressure can effectively enhance the efficiency of power generation. The current operating range of steam has reached the ultra-supercritical state. The thermal physical properties subject to high temperatures and pressures of steam have been investigated in this thesis, especially at the critical point. To achieve the goal, the safety wall thickness of a pipe at a specified pressure and temperature was calculated according to the specification of CNS. The detailed procedure was written in an EXCEL code and it can be executed in a personal computer. The data base includes SUS-316L and Inconel-718 which facilitates the information of physical property during the calculation. Based on a designate pressure of 400 atm and the maximum temperature up to 760 ℃, an experimental device has been established by TPRI to study the effect of erosion. The thermal behavior of all the heat exchangers in this loop was investigated in this work. LMTD method has been used to estimate the heat transfer area in the design of double pipe heat exchangers. The experiments were also conducted. The deviation between theory and data is about 5% in a flow rate of 300kg/hr, whereas it increases to 50% in a test of 180kg/hr. It is doubted that the reason was due to low mass flow rate in which Reynolds number falls into the laminar flow regime maybe the eccentric allocation in double pipes. Usually, once-through type boilers have been used in a supercritical power plant. The heating pipes in is type of boiler is subject to the risk of dryout and burnout. A new generation of super-critical boiler bore pipe uses the rifled tube, internally rifled tube allows fluid rotation to produce centrifugal force, the bubble is moved toward the centerline of the tube. Hence the dryout phenomenon can effectively delay.
Chung, Chen-LIN, and 鍾承麟. "Computer Codes to Investigate the Thermal Performance of Double-Pipe Heat Exchangers and Boiler Tubes with High Pressure Water Steam." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/38020230687475521384.
Повний текст джерела國立臺灣海洋大學
機械與機電工程學系
103
The variations of temperature dependent properties of water are studied especially at saturation state and near the critical point. The thermal conductivity as well as viscosity is observed to appear a minimum in the supercritical region, and the relations to pressure have been developed. This study is also interested in the thermal performance of heat exchangers established by Taipower Company. Three cases have been conducted at subcritical and supercritical pressures. Through a series of calculations, the overall heat transfer coefficient can be estimated. When the temperature falls in the low or high regime, the error is around 10%. Whereas the error increases up to 50% while the range of temperature includes either the saturation or pseudo-critical conditions. Similar results were detected in many literatures. Furthermore, the heat transfer coefficients obtained in the present code are compared favorably with the experimental data by China in both tube and annular sides. Finally, the absence of applied heat flux in the present formulas may be expected to play an important role in the further thermal analysis. Nusselt number is an index of heat transfer ability. Some famous empirical correlations were investigated, but none of them can fit the data in the neighborhood of critical point. In addition, the phenomenon of heat transfer deterioration (HTD) was observed near the pseudo critical condition which may result in crack of a boiler tube. A computing program coded in Visual-Basic has been developed to simulate the thermal behavior inside the heated tube. The predicted temperature is made to compare favorably with experimental results. Referencing the facilities in many foreign countries, some suitable sizes of test piece and the installation of thermocouples are recommended. The operating condition including temperature, pressure, mass flux as well as power supply is all investigated which provides Taipower Company to construct the test apparatus
Чернова, Юлія Ігорівна. "Підвищення енергетичної ефективності жаротрубного парового котла VSP-1000 в умовах Концерну «Міські теплові мережі» м. Запоріжжя". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/2159.
Повний текст джерелаUA : Робота викладена на 96 сторінках друкованого тексту, містить 5 таблиці, 4 рисунки. Перелік посилань включає 20 джерел з них на іноземній мові 0. В дипломній роботі розглянуто питання про дослідження теплообміну для удосконалення конструкції жаротрубного котла та вплив аеродинамічних параметрів на його роботу. Розроблено вісім креслень та презентація в яких наведено шляхи підвищення ефективності парового котла.
EN : The work is presented on 96 pages of printed text, contains 5 tables, 4 figures. The list of references includes 20 sources, 0 of them in foreign language. The thesis deals with the issue of the study of heat exchange to improve the design of the fire-tube boiler and the influence of aerodynamic parameters on its work. Eight drawings have been developed and a presentation on how to improve the efficiency of a steam boiler.
Chen, Kuan-You, and 陳冠友. "Steam Condensation and Transport in Micro-Grooved Pipes." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/93274487998540913918.
Повний текст джерелаLin, Shish-Cho, and 林士▉. "TORSIONAL BEGANIOR OF SINGLE STEAL-PIPE PILES IN SATURETED SAND." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/81367687012227672105.
Повний текст джерелаEichenberg, Thomas William. "Numerical analysis of condensation induced water-hammer in horizontal piping systems." Thesis, 1990. http://hdl.handle.net/1957/38056.
Повний текст джерелаGraduation date: 1991
李汎濱. "Chemical and bioactive constituents of the stem of piper arborescens." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/16748590935680540822.
Повний текст джерела高雄醫學大學
天然藥物研究所
90
ABSTRACT Investigation on the CHCl3 souble part of the stem of Formosan Piper arborescens Roxb.(Piperaceae), has led to the isolation of twenty-one compounds including sixteen alkaloids:two simple pyridones, 5,6-dihydro-2(1H)-pyridone (1)、piplartine (2);seven cyclobutanoid amides, piplartine-dimer A (3)、piperarboresine (4)、piperarborenine A (5)、piperarborenine B (6)、piperarborenine C (7)、piperarborenine D (8)、piperarborenine E (9);two dioxoaporphines, cepharadione B (14)、1,2,3-trimethoxy-4,5-dioxo-6a,7-dehydroaporphine (15);five aristolactams, cepharanone B (16)、piperolactam B (17)、piperolactam C (18)、aristolactam BⅢ (19)、goniothalactam (20);and two lignans, (+)-diayangambin (12)、(+)-arborone (13);two phenylpropanoids, methyl trans-3,4,5-trimethoxycinnamate (10)、methyl cis-3,4,5-trimethoxycinna- mate (11);and 4-acetonyl-3,5-dimethoxy-p-quinol (21). Among the isolates, compounds 5~9 and 13 were new compounds. The known compounds 16~20 of aristolactam type, were isolated for the first time from this plant. The structures of the isolated compounds were elucidated by spectroscopic analysis. Compound 2 and 17 revealed antiplatelet aggregation activity at 100 and 50μg ml-1 induced by AA and collagen, compound 7 and 10 showed antiplatelet aggregation activity at 100μg ml-1 induced by collagen, compound 12 showed inhibitory activity on platelet aggregation at 100 and 50μg ml-1 induced by PAF. Additionally, compound 2, 4~9, 19 and 20 showed significant cytotoxicity against P-388, A549 and HT-29 cancer cell lines in vitro.
Espinoza, Jesus Alberto. "Genetic and nutritional effects on stem sinuosity in loblolly pine." 2009. http://www.lib.ncsu.edu/theses/available/etd-01172009-084805/unrestricted/etd.pdf.
Повний текст джерелаLeBude, Anthony Vincent. "Adventitious rooting and physiology of stem cuttings of loblolly pine." 2005. http://www.lib.ncsu.edu/theses/available/etd-04122005-152359/unrestricted/etd.pdf.
Повний текст джерелаHUANG, CHEN-HAO, and 黃陳浩. "A physical model for^^heat transfer in turbulent steam-water droplet flows in vertical pipes." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/66226675873003057062.
Повний текст джерелаWood, Elizabeth Rachel. "Clonal variation of stem taper in loblolly pine (Pinus taeda L.)." 2009. http://www.lib.ncsu.edu/theses/available/etd-10292009-195937/unrestricted/etd.pdf.
Повний текст джерелаZhang, J., X. Lin, R. Wang, Yakun Guo, C. Zhang, and Y. Zhang. "Flow structures in wake of a pile-supported horizontal axis tidal stream turbine." 2019. http://hdl.handle.net/10454/17796.
Повний текст джерелаThis study presents results from laboratory experiments to investigate the wake structure in the lee side of a scaled three-bladed horizontal axis tidal stream turbine with a mono-pile support structure. Experiments are conducted for a range of approaching flow velocity and installation height of rotor. Analysis of the results shows that bed shear stress increases with the increase of approaching velocity and decrease of installation height within 2D (D is the diameter of the rotor) downstream of the rotor. The flow field within 2D downstream of the rotor is greatly influenced by the presence of nacelle and mono-pile. Low stream-wise flow velocity and large turbulence intensity level is detected along the flume center right behind the nacelle and mono-pile from 1D to 2D downstream of the rotor. Stream-wise velocity at the blade tip height lower than the nacelle increases sharply from 1D to 2D and gradually grows afterwards. Correspondingly, the turbulence intensity decreases quickly from 1D to 2D and slowly afterwards. Large bed shear stress is measured from 1D to 2D, which is closely related to turbulence induced by the mono-pile. It is also found that the presence of the mono-pile might make the flow field more ‘disc-shaped’.
National Key Research and Development Program of China (No.2017YFC1404200), the Marine Renewable Energy Research Project of State Oceanic Administration (No.GHME2015GC01), the Fundamental Research Funds for the Central Universities of China (No.2017B696X14) and the Postgraduate Research & Practice Innovation Program of Jiangsu Province, China (No.KYCX17_0448)
Aspinwall, Michael Joseph. "Relating breast-height wood properties to whole-stem wood properties in loblolly pine." 2007. http://www.lib.ncsu.edu/theses/available/etd-07132007-102928/unrestricted/etd.pdf.
Повний текст джерелаEmebiri, Livinus Chinenye. "Detection and Genetic Mapping of Quantitative Trait Loci Influencing Stem Growth Efficiency in Radiata Pine." Phd thesis, 1997. http://hdl.handle.net/1885/46845.
Повний текст джерелаSherrill, Joshua Reid. "Genetic and cultural effects on stem taper and bark thickness in loblolly pine (Pinus taeda L.)." 2005. http://www.lib.ncsu.edu/theses/available/etd-03222005-151742/unrestricted/etd.pdf.
Повний текст джерелаRosier, Christopher L. "Factors affecting the rooting of Fraser fir (Abies fraseri) and Virginia pine (Pinus virginiana) stem cuttings." 2003. http://www.lib.ncsu.edu/theses/available/etd-04292003-110435/unrestricted/etd.pdf.
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