A study on thermal fluid flow of magnetron cooling for microwave oven
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A numerical study has been conducted on thermal dissipation fin shape of the magnetron of a microwave oven. The main focus of the study was on reducing the bypass away from cooling air around cooling fins and enhancing the heat transfer around cylindrical anode body with numerical investigation on louver, slit, dimple and bending shape. To optimize the location and the shape of the elliptical dimple, RSM(DOE) was adopted to enhance the thermal dissipation from the cylindrical anode of magnetron. The flow separation around the anode was delayed due to optimized dimple numerically and verified by experimental study. The enhancement of the fin cooling was utilized for cost reduction of the cooling fin by reducing the thickness of the fin from 0.6 mm to 0.5 mm, resulting in weight saving by 16.7 %.
KeywordsEllipse dimple fin Numerical analysis Heat transfer Magnetron
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- P. V. Siva Rao, P. Srikrishna, N. K. Sharma and S. Subra-manian, Thermal analysis of magnetron injection gun, IEEE International Vacuum Electronics Conference (2009) 491–492.Google Scholar
- R. Sawicki, Analytical determination of the thermal/mechanical performance of traveling wave tube electron guns, Electron Devices Meeting, 24 (1978) 160–163.Google Scholar
- F. P. Incropera and D. P. Dewitt, Fundamentals of Heat and Mass Transfer, 5th Ed., Wiley, New York, USA (2002).Google Scholar