SET Proceedings 2978-4387 Caravel Press 10.65582/set.2013.020 2013.020 Numerical Analysis of Heat Transfer Enhancement Performance of Pyramidal Longitudinal Vortex Generator YuMingzhi yumingzhiwh@163.com WangQiang ChenHancui School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, Shandong Province, China Key Laboratory of Renewable Energy Utilization Technologies in Buildings of the National Education Ministry, Jinan 250101, Shandong Province, China Shandong Provincial Key Laboratory of Building Energy Saving Technology, Shandong Province, China 26082013 12 1 9789881543950 225 229 26 August 2013 © 2013 Copyright WSSET 2013

Longitudinal Vortex Generators (LVG) is an effective passive heat transfer enhancement method. It is widely used because it’s simple and easy to implement. The authors had put forward a kind of triangular tapered LVG, triangular pyramidal LVG (TPLVG), to ehance heat dissipation of eletrical transformers. By numerical simulation, the influence of attack angle, and the height of the TPLVG had been analysed. The results showed that the TPLVGs increased the cooling capacity of the oil-immersed transformer heat sink, and the optimum attack angle and height is 45° and 10mm individually.The natural convection heat transfer coefficient is increased about 8.4%.

 (Oil-immersed transformer longitudinal vortex generators heat transfer enhancement natural convection numerical simulation) 26 to 29 August 2013 12th International Conference on Sustainable Energy Technologies SET2013 12 Hong Kong, China