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Dissertations / Theses on the topic 'Fire dynamic simulation'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Choi, Joonho. "Concurrent fire dynamic models and thermomechanical analysis of steel and concrete structures." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26679.

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2

Blom, Andrej. "Comparing FumeFx with Autodesk Maya Dynamic System." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-610.

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<p>One of the main problem areas within computer graphics is simulating natural phenomena’s, working with fluid solvers, and particle systems. In the special effects industry, there is a demand for mimicking appearance of common special effect such as fire, smoke, and water. Autodesk Maya and FumeFx are used for exploring those methods in creating smoke and fire simulations and implementing those into a</p><p>large dynamic system, while researching the possibility to efficiently control and modify an entire dynamic system on a per object level. Final production renders results are from both Ma

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3

He, Yiyang. "A Physically Based Pipeline for Real-Time Simulation and Rendering of Realistic Fire and Smoke." Thesis, Stockholms universitet, Numerisk analys och datalogi (NADA), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-160401.

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With the rapidly growing computational power of modern computers, physically based rendering has found its way into real world applications. Real-time simulations and renderings of fire and smoke had become one major research interest in modern video game industry, and will continue being one important research direction in computer graphics. To visually recreate realistic dynamic fire and smoke is a complicated problem. Furthermore, to solve the problem requires knowledge from various areas, ranged from computer graphics and image processing to computational physics and chemistry. Even though

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4

Morkūnas, Algirdas. "Gaisrų ekspertizių analizė ir jų plėtojimo perspektyvos." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060130_120945-74153.

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The main purpose of the Master paper is to make fire investigations analysis, to find its problems ant find a way to solve them. Also suggest new alternative fire investigation methods. In the first part of my work I studied fire investigation analysis disputed all the methods of fire investigation used in Lithuania. I found and disputed limitations of fire investigation methods and found few solutions for them. I describe new alternative fire investigation methods used abroad. In the second part of my work I have analyzed new fire investigation method- fire dynamic simulator. I Studied princi

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5

Woller, Margo M. "The making of D-SAT : the development and testing of Dynamic Situation Awareness Task." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4249.

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6

Zacharoff, Hugo. "Simulating cable fires in Fire Dynamics Simulator : Based on small scale testing in cone calorimeter." Thesis, Luleå tekniska universitet, Byggkonstruktion och brand, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-85995.

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In a society increasingly more influenced by technology and electricity, electrical and computer cables will play a more vital role in humans’ everyday life. With an increasing number of cables being introduced into society, the risk of fires caused by or involving cables will increase and become a more common danger to property and human lives. The fire properties of cables are tested according to Standard EN 50399 where vertically mounted cables are exposed to a burner for 20 minutes. The present work consists of running simulations imitating the conditions of Standard EN 50399 for testing c

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7

Covi, Patrick. "Multi-hazard analysis of steel structures subjected to fire following earthquake." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/313383.

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Fires following earthquake (FFE) have historically produced enormous post-earthquake damage and losses in terms of lives, buildings and economic costs, like the San Francisco earthquake (1906), the Kobe earthquake (1995), the Turkey earthquake (2011), the Tohoku earthquake (2011) and the Christchurch earthquakes (2011). The structural fire performance can worsen significantly because the fire acts on a structure damaged by the seismic event. On these premises, the purpose of this work is the investigation of the experimental and numerical response of structural and non-structural components o

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8

Melek, Zeki. "Interactive simulation of fire, burn and decomposition." Texas A&M University, 2007. http://hdl.handle.net/1969.1/85805.

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This work presents an approach to effectively integrate into one unified modular fire simulation framework the major processes related to fire, namely: a burning process, chemical combustion, heat distribution, decomposition and deformation of burning solids, and rigid body simulation of the residue. Simulators for every stage are described, and the modular structure enables switching to different simulators if more accuracy or more interactivity is desired. A "Stable Fluids" based three gas system is used to model the combustion process, and the heat generated during the combustion is used to

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9

Webb, Alex K. "FDS modelling of hot smoke testing, cinema and airport concourse." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-120606-181621/.

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10

Ball, George LeRoy. "A spatial dynamic approach to ecological modeling: Simulating fire spread." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/184986.

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The objective of this dissertation is to develop a new research tool, PROMAP, which will allow the construction of models that satisfy the requirement of spatial distribution and hierarchical interactions within a dynamic framework. An analysis of the form of ecosystems is followed by an examination of current attempts at ecosystem modeling using spatial relationships. An examination of the analytical procedures used in the spatial modeling process, results in a set of criteria that a suitable modeling system should incorporate. These criteria are: the use of real numbers; iterative processing

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11

Schagerström, Lukas. "Valideringsstudie av Multi-Zone Fire Model." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78682.

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Det finns ett flertal brandsimuleringsprogram på marknaden som används i olika utsträckning varav ett är Fire Dynamics Simulator (FDS). En av nackdelarna med FDS är att det kan ta mycket tid att göra en brandsimulering. Det finns brandsimuleringsprogram som med stor sannolikhet utför brandsimuleringar snabbare än FDS. För några av dessa brandsimuleringsprogram finns det inte någon dokumentation om hur resultaten som brandsimuleringsprogrammen producerar ställer sig mot det som skulle hända i verkligheten vid en brand, något som kallas att vara valideratdet vill säga programmen är inte validera

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12

Woodburn, Peter. "Computational fluid dynamics simulation of fire-generated flows in tunnels and corridors." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282879.

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13

Clement, Jason Mark. "Experimental verification of the Fire dynamics simulator (FDS) hydrodynamic model." Thesis, University of Canterbury. Civil Engineering, 2000. http://hdl.handle.net/10092/5857.

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The objective of this research has been to verify the hydrodynamic model that is contained within the Fire Dynamics Simulator (FDS). In the first part of the research, a series of buoyant salt water experiments have been conducted, with the purpose of generating experimental data for comparison with computational fluid dynamics (CFD) models. Two types of buoyant flows have been generated in the experiments; a natural transitional flow, and flows that resemble fire induced smoke flow within a residential building. Laser Induced dye Fluorescence (LIF) has been used to measure the fluid density i

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14

Lindström, Stefan B. "Simulations of the Dynamics of Fibre Suspension Flows." Licentiate thesis, Mid Sweden University, Department of Natural Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-53.

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<p>A new model for simulating non-Brownian flexible fibres suspended in a Newtonian fluid has been developed. Special attention has been given to include realistic flow conditions found in the industrial papermaking process in the key features of the model; it is the intention of the author to employ the model in simulations of the forming section of the paper machine in future studies.</p><p>The model considers inert fibres of various shapes and finite stiffness, interacting with each other through normal, frictional and lubrication forces, and with the surrounding fluid medium through hydrod

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15

Burmenko, Irina. "Brownian dynamics simulations of fine-scale molecular models." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32330.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2005.<br>Includes bibliographical references (leaves 105-111).<br>One of the biggest challenges in non-Newtonian fluid mechanics is calculating the polymer contribution to the stress tensor, which is needed to calculate velocity and pressure fields as well as other quantities of interest. In the case of a Newtonian fluid, the stress tensor is linearly proportional to the velocity gradient and is given by the Newton's law of viscosity, but no such unique constitutive equation exists for non-Newtonian fluids. In

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16

Al-Far, Salam H. "Indirect fired oven simulation using computational fluid dynamics (CFD)." Thesis, London South Bank University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618655.

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17

Kim, Mihyun Esther. "A study on pulsation in Runehamar Tunnel fire tests with forced longitudinal ventilation." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-100506-112551/.

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Thesis (M.S.) -- Worcester Polytechnic Institute.<br>Keywords: pulsation; FDS; fire dynamics simulator; oscillation; fluctuation; tunnel fire; forced ventilation. Includes bibliographical references (p.65-66).

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18

Park, Jeanhyuk. "NUMERICAL STUDY OF CONCURRENT FLAME SPREAD OVER AN ARRAY OF THIN DISCRETE SOLID FUELS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case151492595770856.

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19

Layeghi, Kamran. "Kinematics and dynamics simulation control of a five-axis robot." Thesis, Keele University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277928.

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20

Parkes, Anthony Richard. "The impact of size and location of pool fires on compartment fire behaviour." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2009. http://hdl.handle.net/10092/3444.

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An understanding of compartment fire behaviour is important for fire protection engineers. For design purposes, whether to use a prescriptive code or performance based design, life safety and property protection issues are required to be assessed. The use of design fires in computer modelling is the general method to determine fire safety. However these computer models are generally limited to the input of one design fire, with consideration of the complex interaction between fuel packages and the compartment environment being simplified. Of particular interest is the Heat Release Rate, HRR, a

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21

Pau, Dennis Su Wee. "A Comparative Study on Combustion Behaviours of Polyurethane Foams with Numerical Simulations using Pyrolysis Models." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2013. http://hdl.handle.net/10092/9177.

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This research investigates the decomposition and burning behaviours of polyurethane foams experimentally and compares the experimental results obtained with the numerical results from the pyrolysis model of Fire Dynamics Simulator, Version 5 (FDS 5). Based on the comparison of model and experimental heat release rates, the accuracy of the pyrolysis model is quantified. In total, this research tested seven polyurethane foams consisting of three non-fire retardant (NFR) and four fire retardant (FR) foams. According to the simultaneous differential scanning calorimetry and thermogravimetric analy

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22

Kayili, Serkan. "Cfd Simulation Of Fire And Ventilation In The Stations Of Underground Transportation Systems." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606115/index.pdf.

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The direct exposure to fire is not the most immediate threat to passengers&amp<br>#8217<br>life in case of fire in an underground transportation system. Most of the casualties in fire are the results of smoke-inhalation. Numerical simulation of fire and smoke propagation provides a useful tool when assessing the consequence and deciding the best evacuation strategy in case of a train fire inside the underground transportation system. In a station fire the emergency ventilation system must be capable of removing the heat, smoke and toxic products of combustion from the evacuation routes to ensu

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23

Rajput, Prafulla. "A Model of the Emission and Dispersion of Pollutants From a Prescribed Forest Fire in a Typical Eastern Oak Forest." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1283532162.

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24

Chan, Chung Ying Amy. "Dynamic modeling, control and simulation of a planar five-link bipedal walking system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0020/MQ53135.pdf.

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25

Zappone, Marco. "Computational Fluodynamics Modeling (CFD) of horizontal propane jet fires." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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With regard to pipeline transportation of hazardous material, the occurrence of a jet fire is one of the most common accidents in case of loss of containment. In light of this consideration, an appropriate estimation of the accident scenario is necessary to determine the magnitude of the risk and the required measures to avoid or mitigate the consequences. Computational Fluid Dynamics (CFD) represents a valid tool to be used in this framework, because of its capability to describe the evolution of the accident, considering the obstacles and the site-specific factors. In this work, the capabili

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26

Barter, Wiliam Hale. "Numerical simulation of three-dimensional unsaturated flow in a heterogeneous porous medium." Thesis, The University of Arizona, 1995. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0054_m_sip1_w.pdf&type=application/pdf.

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27

Schuhbauer, Christian [Verfasser]. "Dynamic and Coupled Simulation of the 700°C Coal-Fired Power Plant / Christian Schuhbauer." München : Verlag Dr. Hut, 2013. http://d-nb.info/1045988774/34.

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28

Lin, Chihnan. "Comparison of a Dynamic Simulation and Experiments on a Gas- Fired Water Pump System /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487932351057054.

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29

Bova, Anthony Scott. "Modeling the Ventilation of Natural Animal Shelters in Wildland Fires." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274966386.

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30

Awad, Carmen. "Études numériques et expérimentales des feux marginaux." Thesis, Corte, 2021. http://www.theses.fr/2021CORT0001.

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La lutte contre les incendies de forêt commence très en amont des départs de feux par une politique volontariste de prévention du risque. Une des méthodes la plus utilisée est la réduction de la charge du combustible en utilisant la technique des feux contrôlés appelés aussi feux dirigés. Ces feux sont souvent menés en forêt et doivent être à faible intensité pour ne pas causer des dégâts importants sur les arbres et sur le sol. Ainsi, ils sont toujours conduits avec des conditions de propagation marginales. Ainsi une légère modification de ces conditions peut provoquer leur extinction. En eff

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31

Venkateswaran, Jayendran. "PRODUCTION AND DISTRIBUTION PLANNING FOR DYNAMIC SUPPLY CHAINS USING MULTI-RESOLUTION HYBRID MODELS." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1185%5F1%5Fm.pdf&type=application/pdf.

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32

Freye, Jeffrey T. "Design of experiment analysis for the Joint Dynamic Allocation of Fires and Sensors (JDAFS) simulation." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Jun%5FFreye.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2007.<br>Thesis Advisor(s): Lucas, Thomas W. . "June 2007." Description based on title screen as viewed on August 15, 2007. Includes bibliographical references (p. 135-137). Also available in print.

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Xia, Yunkai. "Numerical simulation of fine particle separation in hindered-settling bed separators by computational fluid dynamics." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3544.

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Thesis (Ph. D.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains xiv, 187 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 181-186).

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34

Chatziefstratiou, Efthalia. "SIMULATION OF TREE STEM INJURY, AIR FLOW AND HEAT DISPERSION IN FORESTS FOR PREDICTION OF FIRE EFFECTS." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420644169.

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35

Iannello, Christopher J. "A unified approach to dynamic modeling of high switching frequency pwm converters." Doctoral diss., University of Central Florida, 2001. http://digital.library.ucf.edu/cdm/ref/collection/RTD/id/4918.

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University of Central Florida College of Engineering Thesis<br>This dissertation will present the development of a unified approach for dynamic modeling of the PWM and soft-switching power converters. Dynamic modeling of non-linear power converters is very important for the design and stability of their closed loop control. While the use of equivalent circuits is often preferred due to simulation efficiency issues, no unified and widely applicable method for the formulation of these equivalents exists.<br>Ph.D.<br>Doctorate;<br>School of Electrical Engineering and Computer Science<br>Engineeri

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36

Inthavong, Kiao, and kiao inthavong@rmit edu au. "Simulation of Fluid Dynamics and Particle Transport in a Realistic Human Nasal Cavity." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081202.162555.

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Airflow and particle transport through the nasal cavity was studied using Computational Fluid Dynamics (CFD). A computational model of the human nasal cavity was reconstructed through CT scans. The process involved defining the airway outline through points in space that had to be fitted with a closed surface. The airflow was first simulated and detailed airflow structures such as local vortices, wall shear stresses, pressure drop and flow distribution were obtained. In terms of heat transfer the differences in the width of the airway especially in the frontal regions was found to be critical

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37

Celik, Alper. "Experimental And Numerical Studies On Fire In Tunnels." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613857/index.pdf.

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Fire is a complex phenomenon including many parameters. The nature of fire makes it a very dangerous and hazardous. For many reasons the number of tunnels are increasing on earth and fire safety is one of the major problem related to tunnels. This makes important to predict and understand the behavior of fire, i.e., heat release rate, smoke movement, ventilation effect etc. The literature includes many experimental and numerical analyses for different conditions for tunnel fires. This study investigates pool fire of three different fuel sources: ethanol, gasoline and their mixture for differen

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38

Musluoglu, Eren. "A Theoretical Analysis Of Fire Development And Flame Spread In Underground Trains." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610860/index.pdf.

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The fire development and flame spread in the railway carriages are investigated by performing a set of simulations using a widely accepted simulation software called &amp<br>#8216<br>Fire Dynamics Simulator&amp<br>#8217<br>. Two different rolling stock models<br>representing a train made up of physically separated carriages, and a 4-car train with open wide gangways<br>have been built to examine the effects of train geometry on fire development and smoke spread within the trains. The simulations incorporate two different ignition sources<br>a small size arson fire, and a severe baggage fire i

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39

Le, Grange Willie. "Component development for a high fidelity transient simulation of a coal-fired power plant using Flownex SE." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29863.

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Large coal-fired power stations are designed to be run predominantly at full load and optimum conditions. The behaviour of plants, operating at low load and varying conditions, is getting more and more attention due to the introduction of variable renewable generation on the grid. Consequently, the need for a fully transient high-fidelity system based model has grown, as this will enable one to study the behaviour of plants under such non-ideal conditions. This report details the development of a feedwater heater, deaerator and turbine component for such a high-fidelity transient system model

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40

Kerber, Stephen. "Evaluation of the ability of fire dynamic simulator to simulate positive pressure ventilation in the laboratory and practical scenarios." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/3243.

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Thesis (M.S.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Dept. of Fire Protection Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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Chen, Zhibin. "Extension of the eddy dissipation concept and laminar smoke point soot model to the large eddy simulation of fire dynamics." Thesis, Kingston University, 2012. http://eprints.kingston.ac.uk/24031/.

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The original turbulent energy cascade of eddy dissipation concept (EDC) has been extended to the LES framework, assuming that there is always a structure level on which the typical length scale is equivalent to the filter width of large eddy simulation (LES). The velocity scale on this structure level could be calculated from the sub-grid scale (SGS) kinetic energy, provided that this kinetic energy transport equation is solved in LES. All other quantities would thus be calculated on this structure level according to the general formulations from the original turbulent energy cascade. Based on

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42

Meunders, Andreas [Verfasser]. "A study on buoyancy-driven flows: Using particle image velocimetry for validating the Fire Dynamics Simulator / Andreas Meunders." Wuppertal : Universitätsbibliothek Wuppertal, 2016. http://d-nb.info/1120340047/34.

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Paudyal, Nabina. "Brownian Dynamics Simulation Of A Five-site Model for a Motor Protein on a Bead-Spring Substrate." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1415390064.

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44

Osborne, Kevin J. "SIMULATED EFFECTS OF VARIED LANDSCAPE-SCALE FUEL TREATMENTS ON CARBON DYNAMICS AND FIRE BEHAVIOR IN THE KLAMATH MOUNTAINS OF CALIFORNIA." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/646.

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I utilized forest growth model (FVS-FFE) and fire simulation software (FlamMap, Randig), integrated through GIS software (ArcMap9.3), to quantify the impacts varied landscape-scale fuel treatments have on short-term onsite carbon loss, long-term onsite carbon storage, burn probability, conditional flame length, and mean fire size. Thirteen fuel treatment scenarios were simulated on a 42,000 hectare landscape in northern California: one untreated, three proposed by the US Forest Service, and nine that were spatially-optimized and developed with the Treatment Optimization Model in FlamMap. The

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45

Stalcup, Erik James. "Numerical Modeling of Upward Flame Spread and Burning of Wavy Thin Solids." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1417797653.

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46

Lindqvist, Petter. "Validering av solida temperaturer i FDS genom jämförelse mot FE-beräkningar." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79973.

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FDS (Fire Dynamics Simulator) använder en version av Navier-Stokes ekvationerna för att göra noggranna beräkningar av värme- och gastransport genom brandbelastade utrymmen. Utvecklarna av programmet arbetar kontinuerligt med att validera det allteftersom nya funktioner tillförs för att öka noggrannheten och bredda tillämpningsområdena. Väldigt lite av detta arbete fokuserar dock på FDS:s konduktionsmodell, den endimensionella Crank-Nicolson metoden. Det här examensarbetet ämnar därför undersöka noggrannheten i FDS:s konduktionsmodell genom jämförelse mot beräkningar med FEM (Finita elementmeto

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47

Saladino, Dario. "Advances in the modeling of fire development in passive houses." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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One of the greatest challenges the world is facing is climate change. According to the Energy Performance of Buildings Directive (EPBD 2010/31/EU), the construction of passive houses, thanks to their characteristics of airtightness and thermal insulation, is a way to reduce pollution and to increase energy efficiency. However, the airtightness induces new fire risks since it prevents the hot fumes of a fire inside the building from flowing out, leading to a pressure increase inside the house. It must be remembered that 130 Pa is the threshold value of pressure at which the occupants might hav

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48

Rao, Balappa Shrisha. "Fine structure in cortical connectivity : effects on network dynamics and function Dynamics and orientation selectivity in a cortical model of rodent V1 with excess bidirectional connections Theory of orientation selectivity in random binary networks." Thesis, Sorbonne Paris Cité, 2018. https://wo.app.u-paris.fr/cgi-bin/WebObjects/TheseWeb.woa/wa/show?t=2401&f=17357.

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Pas de résumé<br>The local cortical network connectivity significantly deviates from a random network, giving rise to fine structure at the neuron-to-neuron level. In this study, we have investigated the effects of these fine structures on network dynamics and function. We have investigated two types of fine structure, namely, excess bidirectionality and feature specific connectivity. The study of the effects of excess bidirectionality was conducted in a conductance-based model of layer 2/3 in rodent V1. Through large scale numerical simulations, we showed that excess bidirectional connections

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Fraga, Guilherme Crivelli. "Análise da influência das propriedades radiativas de um meio participante na interação turbulência-radiação em um escoamento interno não reativo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/142495.

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A interação turbulência-radiação (TRI, do inglês Turbulence-Radiation Interaction) resulta do acoplamento altamente não linear entre flutuações da intensidade de radiação e flutuações da temperatura e da composição química do meio, e tem-se demonstrado experimentalmente, teoricamente e numericamente que este é um fenômeno relevante em diversas aplicações envolvendo altas temperaturas, especialmente em problemas reativos. Neste trabalho, o TRI é analisado em um escoamento interno não reativo de um gás participante que se desenvolve em um duto de seção transversal quadrada, para diferentes inten

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Fan, Xijun. "Numerical study on some rheological problems of fibre suspensions." School of Aerospace, Mechanical & Mechatronic Engineering, 2006. http://hdl.handle.net/2123/1096.

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Doctor of philosophy (Ph D)<br>This thesis deals with numerical investigations on some rheological problems of fibre suspensions: the fibre level simulation of non-dilute fibre suspensions in shear flow; the numerical simulation of complex fibre suspension flows and simulating the particle motion in viscoelastic flows. These are challenging problems in rheology. Two numerical approaches were developed for simulating non-dilute fibre suspensions from the fibre level. The first is based on a model that accounts for full hydrodynamic interactions between fibres, which are approximately calculated

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