Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2000.04b
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- Pages.57-64
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- 2000
Heat Transfer Optimization in a Tube with Circular-Sectored Fins
원관내 부채꼴 휜 주위에서의 열전달 최적화
- Published : 2000.04.20
Abstract
The present work investigates the heat transfer characteristics for laminar fully developed forced convection in an internally finned tube with axially uniform heat flux and peripherally uniform temperature through analytical models of convection in a porous medium. Using the Brinkman-extended Darcy flow model and the two equation model fur heat transfer, analytical solutions fur fluid flow and heat transfer are obtained and compared with the exact solution for fluid flow and the numerical solutions for conjugate heat transfer to validate the porous medium approach. Using the analytical solutions, parameters of engineering importance are identified and their effects on fluid flow and heat transfer are studied. Also, the expression fur total thermal resistance is derived from the analytical solutions and minimized in order to optimize the thermal performance of the internally finned tubes.