Log in

Relevant bibliographies by topics / Radiation heat flow / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Radiation heat flow.

Dissertations / Theses on the topic 'Radiation heat flow'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 42 dissertations / theses for your research on the topic 'Radiation heat flow.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Zhou, En. "The use of FLUENT for heat flow studies of the hot-wire chemical vapor deposition system to determine the temperatures reached at the growing layer surface." Thesis, University of the Western Cape, 2009. http://hdl.handle.net/11394/1705.

Full text

Abstract:

Magister Scientiae - MSc<br>The overall aim of this project is to study the heat transfer inside the reaction chamber of the Hot-Wire Chemical Vapor Deposition (HWCVD) system with a commercial software package FLUENT6.3; it is one of the most popular Computational Fluid Dynamics solvers for complex flows ranging from incompressible to mildly compressible to even highly compressible flows. The wealth of physical models in FLUENT allows us to accurately predict laminar and turbulent flows, various modes of heat transfer, chemical reactions, multiphase flows and other phenomena with complete mesh

APA, Harvard, Vancouver, ISO, and other styles

2

Vondál, Jiří. "Computational Modeling of Turbulent Swirling Diffusion Flames." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-234149.

Full text

Abstract:

Schopnost predikovat tepelné toky do stěn v oblasti spalování, konstrukce pecí a procesního průmyslu je velmi důležitá pro návrh těchto zařízení. Je to často klíčový požadavek pro pevnostní výpočty. Cílem této práce je proto získat kvalitní naměřená data na experimentálním zařízení a využít je pro validaci standardně využívaných modelů počítačového modelování turbulentního vířivého difúzního spalování zemního plynu. Experimentální měření bylo provedeno na vodou chlazené spalovací komoře průmyslových parametrů. Byly provedeny měření se pro dva výkony hořáku – 745 kW a 1120 kW. Z měření byla vyh

APA, Harvard, Vancouver, ISO, and other styles

3

Králová, Martina. "Velkoplošné solární systémy." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226008.

Full text

Abstract:

Entering of thesis focuses on large-scale solar systems. Large solar-scale system will be used for heating water in public swimming pool. The pool is located in Brno - country. The pool is operated year-round. Great emphasis of the thesis is on the surface heat loss. Evaporation of water from the water surface is also applied in the experimental part of the thesis. In the calculations is used software for modeling the thermal microclimate of buildings and air conditioning design Teruna.

APA, Harvard, Vancouver, ISO, and other styles

4

Lu, Xijia. "An Applied Numerical Simulation of Entrained-Flow Coal Gasification with Improved Sub-models." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1696.

Full text

Abstract:

The United States holds the world's largest estimated reserves of coal and is also a net exporter of it. Coal gasification provides a cleaner way to utilize coal than directly burning it. Gasification is an incomplete oxidation process that converts various carbon-based feedstocks into clean synthetic gas (syngas), which can be used to produce electricity and mechanical power with significantly reduced emissions. Syngas can also be used as feedstock for making chemicals and various materials. A Computational Fluid Dynamics (CFD) scheme has been used to simulate the gasification process for man

APA, Harvard, Vancouver, ISO, and other styles

5

Zajíček, Václav. "Vytápění bytového domu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392215.

Full text

Abstract:

The thesis is composed of three parts - theoretical, computational and a project part. The theoretical part deals with heat sharing through conduction, flow and radiation. The computational part is focused on the overall calculation of the heating system to operate smoothly and reliably. Three gas condensing boilers are designed as a source of heat. The heating of the water is solved as a reservoir. It's source of heat is one gas condensation boiler. The project part contains a technical report and the project documentation on the stage of the implementation dossier.

APA, Harvard, Vancouver, ISO, and other styles

6

Druet, Pierre-Etienne. "Analysis of a coupled system of partial differential equations modeling the interaction between melt flow, global heat transfer and applied magnetic fields in crystal growth." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2009. http://dx.doi.org/10.18452/15893.

Full text

Abstract:

Hauptthema der Dissertation ist die Analysis eines nichtlinearen, gekoppelten Systems partieller Differentialgleichungen (PDG), das in der Modellierung der Kristallzüchtung aus der Schmelze mit Magnetfeldern vorkommt. Die zu beschreibenden Phenomäne sind einerseits der im elektromagnetisch geheizten Schmelzofen erfolgende Wärmetransport (Wärmeleitung, -konvektion und -strahlung), und andererseits die Bewegung der Halbleiterschmelze unter dem Einfluss der thermischen Konvektion und der angewendeten elektromagnetischen Kräfte. Das Modell besteht aus den Navier-Stokeschen Gleichungen für eine

APA, Harvard, Vancouver, ISO, and other styles

7

Sena, Julio Cesar Lopes. "ESTUDO DAS COMPONENTES DO BALANÇO DE ENERGIA EM UMA CULTURA DE ARROZ IRRIGADO NO SUL DO BRASIL." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/10266.

Full text

Abstract:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This dissertation presents a study on the experimental site of Cachoeira do Sul-RS, Brazil. The objective of this study was to estimate the components of the Energy Balance Closure on the surface of a rice paddy field. The research was divided into three periods: I-dry soil, not irrigated and low vegetation, remaining from the last rice harvest, II - irrigated soil in which the area was being prepared for planting pre-germinated rice, and period III - irrigated soil already planted with rice and at reproductive phase. Also, we perf

APA, Harvard, Vancouver, ISO, and other styles

8

Endo, Makoto. "Numerical modeling of flame spread over spherical solid fuel under low speed flow in microgravity:Model development and comparison to space flight experiments." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1461022358.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Vaníček, Jan. "Termomechanický model pneumatiky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445170.

Full text

Abstract:

This diploma thesis is about thermomechanics of passenger car tires. The research part dealing with existing tire models is followed by the practical part. The practical part is based on the designs of thermomechanical models. The first model determines a dependence of temperature on the air pressure inside a tire when a temperature changes. The second thermomechanical model captures all the heat fluxes which affect a tire while a vehicle is in motion. The third thermomechanical model calculates temperatures of parts of the tire during driving tests. All models are programmed in MATLAB.

APA, Harvard, Vancouver, ISO, and other styles

10

MacKay, Robert Malcolm. "The Oregon Graduate Institute one dimensional time-dependent radiative convective model : theory and application /." Full text open access at:, 1990. http://content.ohsu.edu/u?/etd,202.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Kalánek, Jiří. "Reflexní tepelné izolace pro efektivní využití v nízkoenergetických stavbách." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-433617.

Full text

Abstract:

The dissertation thesis is focused on thermal insulating properties of reflective insulation under boundary conditions typical for low-energy buildings. In the introductory part of this thesis the attention is focused on the heat transfer process. There is described primarily heat transfer by radiation. There is also described the reflective insulation and the methods of determination their thermal performance. The remaining part of the thesis deals with the analysis of the results obtained in experimental measurements. Measurement results are compared with the calculation model. Conclusions f

APA, Harvard, Vancouver, ISO, and other styles

12

Kužel, Kristián. "Návrh systému řízení a diagnostiky ohřevu vody s využitím solární energie." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230895.

Full text

Abstract:

This thesis deals with problems related to heating of hot service water. It focuses on solar water heating, describes individual types of solar panels and summarizes the existing information about solar water heating. It demonstrates actual problems of solar system solution on a specific example of a two-generation family house, where it analyses possibilities of diagnostics and control of such system. It also deals with suggestions of possible expansion of the current solar system.

APA, Harvard, Vancouver, ISO, and other styles

13

Velissariou, Panagiotis. "Development of a Coastal Prediction System That Incorporates Full 3D Wave-Current Interactions on the Mean Flow and the Scalar Transport With Initial Application to the Lake Michigan Turbidity Plume." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1229959016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Bressloff, N. W. "CFD prediction of coupled radiation heat transfer and soot production in turbulent flames." Thesis, Cranfield University, 1996. http://hdl.handle.net/1826/3622.

Full text

Abstract:

The mechanisms governing the formation and destruction of soot in turbulent combustion are intimately coupled to thermal radiation due to the strong dependence of sooting processes and radiative loss on temperature. Detailed computational fluid dynamics (CFD) predictions of the radiative and soot output from turbulent non-premixed flames are normally performed by parabolic algorithms. However, the modelling of combustion systems, such as furnaces and unwanted enclosure fires, often require a fully elliptic description of the flow field and its related physical phenomena. Thus, this thesis inve

APA, Harvard, Vancouver, ISO, and other styles

15

Gerova, Klementina. "Thermo-fluid effects associated with modelling subscale automotive heat exchangers." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/9875.

Full text

Abstract:

Automotive components are tested extensively in wind tunnels by automotive manufacturers and race teams. This is usually achieved using an accurate scale model representation of the component within the wind tunnel. Automotive heat exchangers, however, are comprised of numerous intricate geometries and are therefore impractical to produce at model scale. Instead they are simply modelled as pressure drops, achieved using a thin mesh or honeycomb of known porosity. Most commercial computational fluid dynamics solvers ignore the geometry of the heat exchanger and instead model it as a discontinui

APA, Harvard, Vancouver, ISO, and other styles

16

Maag, Gilles. "Monte Carlo radiative heat transfer analysis of a CH₄ flow laden with carbon particles." Zürich : ETH, Eidgenössische Technische Hochschule Zürich, Institute of Energy Technology, 2006. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=283.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Horsák, Jan. "Verifikace modelu pro predikci vlastností spalovacího procesu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231498.

Full text

Abstract:

This work thoroughly analyzes a previously created computational model for predicting characteristic properties of the combustion process in an experimental combustion chamber. Any found shortcomings of the original model are removed and the model is further improved prior to its application on 11 real cases of combustion tests performed at various conditions and with various fuels. Data provided by the model are confronted with the data obtained during the combustion tests and the model accuracy is evaluated, based on local heat flux along the length of the combustion chamber. Finally, the ov

APA, Harvard, Vancouver, ISO, and other styles

18

Paul, Sreebash Chandra. "Large eddy simulation of a fuel-rich turbulent non-premixed reacting flow with radiative heat transfer." Thesis, University of Glasgow, 2008. http://theses.gla.ac.uk/203/.

Full text

Abstract:

The aims of this thesis are to apply the Large Eddy Simulation (LES) and beta Probability Density Function (β- PDF) for the simulation of turbulent non-premixed reacting flow, in particularly for the predictions of soot and NO production, and to investigate the radiative heat transfer during combustion process applying Discrete Ordinates Method (DOM). LES seeks the solution by separating the flow field into large-scale eddies, which carry the majority of the energy and are resolved directly, and small-scale eddies, which have been modelled via Smagorinsky model with constant Cs (Smagorinsky mo

APA, Harvard, Vancouver, ISO, and other styles

19

Zein, Waël. "Etude d'un capteur absorbant l'energie solaire par le fluide caloporteur : application au chauffage des piscines de plein-air." Poitiers, 1986. http://www.theses.fr/1986POIT2289.

Full text

Abstract:

Modelisation des transferts radiatifs pour les differents composants du capteur. Resolution numerique des equations permettant d'obtenir les lois d'evolution des performances du capteur en fonction de ces caracteristiques geometriques, des conditions radiatives et meteorologiques d'un site. Verification experimentale a l'aide d'un simulateur de rayonnement. Application envisagee, au chauffage d'une piscine en plein-air. Optimisation des conditions de fonctionnement et analyse economique du systeme de chauffage

APA, Harvard, Vancouver, ISO, and other styles

20

Avila, Matías. "Nonlinear subgrid finite element models for low Mach number flows coupled with radiative heat transfer." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/285809.

Full text

Abstract:

The general description of a fluid flow involves the solution of the compressible Navier-Stokes equations, a very complex problem whose mathematical structure is not well understood. It is widely accepted that these equations provide an accurate description of any problem in fluid mechanics which may present many different nonlinear physical mechanisms. Depending on the physics of the problem under consideration, different simplified models neglecting some physical mechanisms can be derived from asymptotic analysis. On the other hand, radiative heat transfer can strongly interact with convect

APA, Harvard, Vancouver, ISO, and other styles

21

Výravská, Zdeňka. "Vliv stavební konstrukce na tepelnou zátěž prostoru." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226871.

Full text

Abstract:

This master’s thesis focuses on effect of outer building construction on thermal load of space. The effect of translucent and non-translucent construction is discussed. The project of air-conditioning system is prepared for the two alternatives of the translucent construction, including the purchase price of the airconditioning system and glazing and the savings on summer cooling. Afterwards the period of the recovery of investment is calculated. The plan of the airconditioning system is connected to my bachelor’s thesis “Airconditioning in the car showroom”, the subject of which was the plan

APA, Harvard, Vancouver, ISO, and other styles

22

Stručovský, Aleš. "Analýza rozložení teplotního profilu v pájecí peci pomocí systémů CAE." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220122.

Full text

Abstract:

The aim of this project is using the CAE system to analyze the distribution of the temperature profile brazing furnace DIMA 0180. To create the model is used SolidWorks Premium 2012. The simulation is performed using the Flow Simulation. This work builds on the knowledge diploma thesis by Martin Procházka titled The effect of different heat capacities and components on the longitudinal temperature profile for reflow soldering. We start from the knowledge of heat transfer, especially of heat conduction and radiation, which appear in the furnace.

APA, Harvard, Vancouver, ISO, and other styles

23

Cavalcanti, Miranda Flavia [Verfasser], Johannes [Akademischer Betreuer] Janicka, and Pedro [Akademischer Betreuer] Coelho. "Large Eddy Simulation of Turbulent Reacting Flows With Radiative Heat Transfer / Flavia Cavalcanti Miranda ; Johannes Janicka, Pedro Coelho." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2019. http://d-nb.info/1177241684/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Vincent, Tyler Graham. "Total Temperature Probe Performance for Subsonic Flows using Mixed Fidelity Modeling." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/88867.

Full text

Abstract:

An accurate measurement of total temperature in turbomachinery flows remains critical for component life models and cycle performance optimization. While many techniques exist to measure these flows, immersed thermocouple based probes remain highly desirable due to well established practices for probe design and implementation in typical industrial flow applications. However, as engine manufacturers continue to push towards higher maximum cycle temperatures and smaller flow passages, the continued use of these probes requires new probe designs considering both improved sensor durability and me

APA, Harvard, Vancouver, ISO, and other styles

25

Burns, Paul. "Interactions between downslope flows and a developing cold-air pool." Thesis, University of Hertfordshire, 2015. http://hdl.handle.net/2299/15500.

Full text

Abstract:

Downslope flows and regions of enhanced cooling have important impacts on society and the environment. Parameterisation of these often subgrid-scale phenomena in numerical models requires a sound understanding of the underlying physical processes, which has been the overarching aim of this work. A numerical model has been used to characterise the development of a region of enhanced cooling in an idealised alpine valley with width and depth of order 10 and 1 km, respectively, under stable, decoupled, poorly-drained conditions. A focus of this work has been to remove the uncertainty surrounding

APA, Harvard, Vancouver, ISO, and other styles

26

Ng, Eton Yat-Tuen, and eton_ng@hotmail com. "Vehicle engine cooling systems: assessment and improvement of wind-tunnel based evaluation methods." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2002. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080422.100014.

Full text

Abstract:

The high complexity of vehicle front-end design, arising from considerations of aerodynamics, safety and styling, causes the airflow velocity profile at the radiator face to be highly distorted, leading to potentially reduced airflow volume for heat dissipation. A flow visualisation study showed that the bumper bar significantly influenced the cooling airflow, leading to three-dimensional vortices in its wake and generating an area of relatively low velocity across at least one third of the radiator core. Since repeatability and accuracy of on-road testing are prejudiced by weather condit

APA, Harvard, Vancouver, ISO, and other styles

27

Franceschelli, Luca. "Cooling Performance Analysis and Design of an Instrumented Radiator in a MotoGP Wind Tunnel Model." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

Find full text

Abstract:

The present thesis work was developed in collaboration with the Ducati Corse Aerodynamic Department. It is focused on the measurement system employed on the MotoGP Wind Tunnel model in order to evaluate the cooling performances at the radiators. As first, an analysis of the current methodology is conducted. Based on the arrangement of hybrid-Kiel probes behind the radiators, it was observed that an improvement in the calibration procedure is required in order to account for inter-probe and support frame interference. Furthermore, a correlation process with the CFD simulation was carried out.

APA, Harvard, Vancouver, ISO, and other styles

28

Thellmann, Andreas [Verfasser], Christian [Akademischer Betreuer] Mundt, and Klaus [Akademischer Betreuer] Hornung. "Impact of Gas Radiation on Viscous Flows, in particular on Wall Heat Loads, in Hydrogen-Oxygen vs. Methane-Oxygen Systems, based on the SSME Main Combustion Chamber / Andreas Thellmann. Betreuer: Christian Mundt. Gutachter: Klaus Hornung. Universität der Bundeswehr München, Fakultät für Luft- und Raumfahrttechnik." Neubiberg : Universitätsbibliothek der Universität der Bundeswehr, 2010. http://d-nb.info/1007710314/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

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.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

30

Hu, chieh, and 胡杰. "thermal radiation, heat flow and phase interface during." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/57982787776883574398.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Jones, Peter Douglas. "Radiation and convection heat transfer in particle-laden fluid flow." Thesis, 1991. http://hdl.handle.net/1911/16452.

Full text

Abstract:

Combined radiation, convection, and conduction heat transfer are studied in a dispersed two phase flow of gray, laminar, axisymmetric media, where both phases are radiatively participating. The radiative transfer equation in curvilinear coordinates is coupled with an interpenetrating continua energy and momentum formulation for the two phase flow. The radiative transfer equation is set in a novel coordinate system which allows full variation of the radiation intensity in the plane of symmetry and expression of symmetric boundary conditions, without resort to the frequent assumption of azimutha

APA, Harvard, Vancouver, ISO, and other styles

32

Shaija, A. "Laminar Conjugate Natural Convection And Surface Radiation In Horizontal Annuli." Thesis, 2008. http://hdl.handle.net/2005/796.

Full text

Abstract:

Numerical studies of two-dimensional laminar conjugate natural convection flow and heat transfer in horizontal annuli formed between inner heat generating solid cylinders and outer isothermal circular boundary are performed with and without the effect of surface radiation. The two configurations of the concentrically placed inner cylinder are a circular cylinder (CC configuration) and a square cylinder (SOS, i.e., Square-On-Side, configuration). The mathematical formulation consists of the continuity equation, momentum equations with Boussinesq approximation and the solid and fluid energy equ

APA, Harvard, Vancouver, ISO, and other styles

33

YU, TENG-YI, and 游登義. "Effects of Thermophoresis and Radiation on Heat and Mass Transfer for Flow over a Streching Surface." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/51000982352299166427.

Full text

Abstract:

碩士<br>中原大學<br>機械工程研究所<br>98<br>A study of the effect of thermophoresis and radiation field on heat and mass transfer from an unsteady stretching surface is reported. In this study, the air flow was modeled as two dimensional, incompressible and steady-state laminar flow. The similarity transformation and numerical technique are used to solve governing equations include mass, momentum, energy and concerntration. The solutions are obtained by Runge-Kutta integration method and shooting method. The results include velocity profiles, temperature and concentration distributions for different , an

APA, Harvard, Vancouver, ISO, and other styles

34

Lin, Zhi-Ru, and 林志儒. "Combined Inner and Outer Air Flow with Heat Radiation to Predict the Thermal Environment Inside a Vehicle Cabin." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/50928093501532749049.

Full text

Abstract:

碩士<br>國立屏東科技大學<br>車輛工程系碩士班<br>93<br>From 1996 to 2002, there are more than 150 children died in America from heat stroke when their parent leaves only them in the vehicle’s passenger compartment for a few minutes. The main purpose of this analysis is to investigate the temperature distribution in the interior of a vehicle. The solar radiation effect participated for the entire flow field. The material and optical properties of the vehicle are also investigated. Obtaining the air flow and temperature distributions in the interior of a vehicle through CFD approach is plausible and relatively eas

APA, Harvard, Vancouver, ISO, and other styles

35

ZHOU, EN. "The use of FLUENT for heat flow studies of the hot-wire chemical vapor deposition system to determine the temperatures reached at the growing layer surface." Thesis, 2009. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_7256_1351085678.

Full text

Abstract:

<p>The overall aim of this project is to study the heat transfer inside the reaction chamber of the Hot-Wire Chemical Vapor Deposition (HWCVD) system with a commercial software package FLUENT6.3<br>it is one of the most popular Computational Fluid Dynamics solvers for complex flows ranging from incompressible to mildly compressible to even highly compressible flows. The wealth of physical models in FLUENT allows us to accurately predict laminar and turbulent flows, various modes of heat transfer, chemical reactions, multiphase flows and other phenomena with complete mesh flexibility and soluti

APA, Harvard, Vancouver, ISO, and other styles

36

Machaba, Mashudu Innocent. "Unsteady hydromagnetic chemically reacting mixed convection MHD flow over a permeable stretching sheet embedded in a porous medium with thermal radiation and heat source/sink." Diss., 2018. http://hdl.handle.net/11602/1124.

Full text

Abstract:

MSc (Mathematics)<br>Department of Mathematics and Applied Mathematics<br>The unsteady hydromagnetic chemically reacting mixed convection MHD ow over a permeable stretching sheet embedded in a porous medium with thermal radiation and heat source/sink is investigated numerically. The original partial di erential equations are converted into ordinary di erential equations by using similarity transformation. The governing non-linear partial di erential equations of Momentum, Energy, and Concentration are considered in this study. The e ects of various physical parameters on the velocity,

APA, Harvard, Vancouver, ISO, and other styles

37

Govender, Megandren. "Radiating solutions with heat flow in general relativity." Thesis, 1994. http://hdl.handle.net/10413/4836.

Full text

Abstract:

In this thesis we model spherically symmetric radiating stars dissipating energy in the form of a radial heat flux. We assume that the spacetime for the interior matter distribution is shear-free. The junction conditions necessary for the matching of the exterior Vaidya solution to an interior radiating line element are obtained. In particular we show that the pressure at the boundary of the star is nonvanishing when the star is radiating (Santos 1985). The junction conditions, with a nonvanishing cosmological constant, were obtained. This generalises the results of Santos (1985) and we believ

APA, Harvard, Vancouver, ISO, and other styles

38

Thomas, Nathan Hoover. "Passive and Active Control of Radiative Heat Flow." Thesis, 2019. https://thesis.library.caltech.edu/11388/1/Thesis.pdf.

Full text

Abstract:

<p>Materials that control the absorption and emission of thermal radiation have attracted renewed interest for energy applications. Materials of interest include those with static optical properties that vary with photon wavelength in a desired manner as well as those with dynamic properties that can be actively tuned by external stimuli. The research in this thesis focuses on creating materials in both categories.</p> <p>First, we examine selective absorbers for solar thermal energy conversion with high absorptivity in solar wavelengths and low emissivity in infrared wavelengths. Achieving

APA, Harvard, Vancouver, ISO, and other styles

39

Chih-Wei, Chang, and 張智瑋. "Effects of Radiative Heat on Vehicle Interior-Exterior Flow Fields and Passenger Comfort." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/32019525526407129910.

Full text

Abstract:

碩士<br>國立屏東科技大學<br>車輛工程系所<br>101<br>Combining the flow fields inside and outside of an electric vehicle, this thesis simulates the temperature and flow fields and aims to investigate how comfort a human body model is solely under air ventilation. The basic shape and dimensions of the electric car are based on a Ford Pronto. The analysis considers different air ventilation schemes, vehicle speeds, and ambient conditions. The numerical simulations use the RNG k-ε turbulence model, solar radiation module along with the DO thermal radiation model, and different volumetric heat generation rates to m

APA, Harvard, Vancouver, ISO, and other styles

40

Cavalcanti, Miranda Flavia. "Large Eddy Simulation of Turbulent Reacting Flows With Radiative Heat Transfer." Phd thesis, 2019. http://tuprints.ulb.tu-darmstadt.de/8390/7/dissertation_Miranda.pdf.

Full text

Abstract:

Combustion is the most common method of energy conversion constituting about 85 % of the primary energy consumption. However, combustion is responsible for emissions of CO, NOx , CO2 , soot and others pollutants. Hence, having the expected increase of the global energy demand in mind as well as the challenge of a global reduction in the greenhouse gases emissions and the current difficulties in developing renewable energy sources for a foreseeable future, combustion science will continue being a very important topic and a very active field of technology. Moreover, since the parameters involve

APA, Harvard, Vancouver, ISO, and other styles

41

Cleveland, Mathew A. "Radiative heat transfer in combustion applications : parallel efficiencies of two gas models, turbulent radiation interactions in particulate laden flows, and coarse mesh finite difference acceleration for improved temporal accuracy." Thesis, 2011. http://hdl.handle.net/1957/26119.

Full text

Abstract:

We investigate several aspects of the numerical solution of the radiative transfer equation in the context of coal combustion: the parallel efficiency of two commonly used opacity models, the sensitivity of turbulent radiation interaction (TRI) effects to the presence of coal particulate, and an improvement of the order of temporal convergence using the coarse mesh finite difference (CMFD) method. There are four opacity models commonly employed to evaluate the radiative transfer equation in combustion applications; line-by-line (LBL), multigroup, band, and global. Most of these models have be

APA, Harvard, Vancouver, ISO, and other styles

42

Veljkovic, Ivana. "Parallel algorithms and software for multi-scale modeling of chemically reacting flows and radiative heat transfer." 2006. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1271/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!