A study of non-Boussinesq integral boundary layer analysis for an MTR research reactor |
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| Affiliation: | 1. Department of Cardiology and Angiology, Robert-Bosch-Krankenhaus, Stuttgart, Germany;2. Department of Cardiology, Amsterdam UMC, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands;3. Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands;1. Department of Aeronautics, Imperial College London, South Kensington Campus, London SW7 2AZ, UK;2. Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1191, USA;1. Laboratoire Génie des Procédés et Matériaux, CentraleSupélec, University Paris-Saclay, 8-10 Rue Joliot-Curie, 91190, Gif-sur-Yvette, France;2. LATMOS/IPSL, UVSQ University Paris-Saclay, Sorbonne University, CNRS, 11 Bd d’Alembert, 78280, Guyancourt, France;3. Planetary Environments Laboratory (Code 699), NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA;4. School of Medicine, Wayne State University, 42 W. Warren Ave, Detroit, MI, 48202, USA;5. Space Science Exploration Division (Code 690), NASA, Goddard Space Flight Center, Greenbelt, MD, 20771, USA |
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| Abstract: | In the present work, a non-Boussinesq (variable physical properties) integral boundary layer analysis is accomplished. The model analyzes laminar free convection between nuclear fuel plates having large fuel plate length to gap between plate ratio. The coolant channels are undergoing to a uniform, symmetric, heat flux and varying fluid properties. In the present study the flow is assumed to be fully developed. This is a good assumption for channels with large fuel plate length to gap between plate ratios. To describe the velocity and temperature distributions of the coolant the non-Boussinesq approximation is introduced into the integral boundary layer equations of flow between parallel plates. The fuel plate temperature is related to the adjacent coolant fluid temperature by a principle in conduction heat transfer. Fluids considered here are air and water. The obtained results show that the present heat transfer problem encountered in nuclear research reactor such Tehran nuclear research reactor (TRR) is characterized by high temperature ratios and thereby rendering the commonly applied Boussinesq approximation invalid. As a result, the use of the Boussinesq approximation (constant fluid properties) for high temperature ratios is not suggested. |
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