Efficient evaluation of diffuse view factors for radiation
01 Apr 1996-International Journal of Heat and Mass Transfer (Pergamon)-Vol. 39, Iss: 6, pp 1281-1286
TL;DR: The Gaussian quadrature method with nonlinear transformation to map the boundary has been found to be the most accurate, computationally faster and very general.
About: This article is published in International Journal of Heat and Mass Transfer.The article was published on 1996-04-01. It has received 44 citations till now. The article focuses on the topics: Gauss–Kronrod quadrature formula & Tanh-sinh quadrature.
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TL;DR: In this article, the authors used an 880 LW AGEMA infrared camera to evaluate the surface distribution of the transmitted heat flux by measuring the temperature distribution on the surface of the thermoplastic sheet.
74 citations
Cites methods from "Efficient evaluation of diffuse vie..."
...Thus the amount of radiation, reaching each front elements of the irradiated sheet, is performed with the contour method using Stokes theorem [10]: FH→p = 1 2πSH ∮...
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TL;DR: In this article, an 880 LW AGEMA infrared camera has been used to determine the surface distribution of the transmitted heat flux by measuring the temperature distribution on the surface of the thermoplastic sheet.
55 citations
TL;DR: In this paper, the authors proposed an algorithm that calculates the radiative view factors based on Stokes' theorem, where the original surfaces are divided into a grid of elementary areas and Stokes theorem is applied for the determination of the view factors between these elementary areas.
Abstract: This paper presents an algorithm that calculates the radiative view factors based on Stokes’ theorem. The authors propose a formulation where the original surfaces are divided into a grid of elementary areas and Stokes’ theorem is applied for the determination of the view factors between these elementary areas. With this approach, the account of the shading effect of obstructions is significantly improved. The capabilities of the proposed formulation were tested with the calculation of radiative view factors between flat and curved surfaces. The results obtained showed a good agreement with the corresponding analytical solutions, with relative errors (REs) lower than 2%. The proposed methodology was also compared with the application of the double integral area formulation and a better agreement was found, between RE and the CPU, using the present formulation.
28 citations
Cites methods from "Efficient evaluation of diffuse vie..."
...To overcome this situation, several approaches have been tested using, for example, the Romberg extrapolation (Jithesh, Lal, and Rajkumar 2007), the Gauss quadrature (Rao and Sastri 1996) or semi-analytic methods (Erchiqui and Ngoma 2007)....
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...The most commonly used methods include the direct or numerical area and contour integration (Rao and Sastri 1996; Kakuta et al. 2001; Choi 2002; Sugden 2004; Raimundo, Gaspar, and Quintela 2004a; Ghaddar, Salam, and Ghali 2006; Dobrowolski et al. 2007; Erchiqui and Ngoma 2007; Mazumder and…...
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...…integral instead of the double integral area (IA) was based on several studies that consider the contour integral method more advantageous in the calculation of view factors (Rao and Sastri 1996) both in terms of accuracy and in terms of time-consuming computing (Kakuta et al. 2001; Walton 2002)....
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TL;DR: In this article, the authors presented the application of contour integral technique to derive the diffuse radiation view factor expressions (analytical) for elements of nuclear reactor fuel bundle, which is significantly more accurate than the area-integration method.
25 citations
TL;DR: In this paper, the feasibility of a solid oxide fuel cell (SOFC)-powered unmanned undersea vehicle (UUV) was examined and a system level analysis was presented that projects a possible integration of the SOFC stack, fuel steam reformer, fuel/oxidant storage and balance of plant components into a 21-in. diameter UUV platform.
24 citations
References
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01 Jan 1981
TL;DR: In this article, a comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation, and the use of the Monte Carlo technique in solving radiant exchange problems and problems of radiative transfer through absorbing-emitting media.
Abstract: A comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation. Among the topics considered are property prediction by electromagnetic theory, the observed properties of solid materials, radiation in the presence of other modes of energy transfer, the equations of transfer for an absorbing-emitting gas, and radiative transfer in scattering and absorbing media. Also considered are radiation exchange between black isothermal surfaces, radiation exchange in enclosures composed of diffuse gray surfaces and in enclosures having some specularly reflecting surfaces, and radiation exchange between nondiffuse nongray surfaces. The use of the Monte Carlo technique in solving radiant-exchange problems and problems of radiative transfer through absorbing-emitting media is explained.
5,879 citations
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01 Jan 1971TL;DR: In this paper, a comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation, and the use of the Monte Carlo technique in solving radiant exchange problems and problems of radiative transfer through absorbing-emitting media.
Abstract: A comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation. Among the topics considered are property prediction by electromagnetic theory, the observed properties of solid materials, radiation in the presence of other modes of energy transfer, the equations of transfer for an absorbing-emitting gas, and radiative transfer in scattering and absorbing media. Also considered are radiation exchange between black isothermal surfaces, radiation exchange in enclosures composed of diffuse gray surfaces and in enclosures having some specularly reflecting surfaces, and radiation exchange between nondiffuse nongray surfaces. The use of the Monte Carlo technique in solving radiant-exchange problems and problems of radiative transfer through absorbing-emitting media is explained.
5,420 citations
Book•
01 Jun 1978TL;DR: In this article, the authors describe work which has been carried out under the subject grant during the period from April 1, 1961, to October 1, 2011, with technical supervision and guidance provided by Mr. Seymour Lieblein, Chief, Flow Physics Branch, NASA Lewis Research Center, Cleveland, Ohio.
Abstract: The pm-pose of this report is to describe work which has been carried out under the subject grant during the period from April 1, 1961, to October 1, 1961. Technical supervision and guidance of the work was provided by Mr. Seymour Lieblein, Chief, Flow Physics Branch, NASA Lewis Research Center, Cleveland, Ohio.
1,127 citations
134 citations