Abstract
In the design of heat exchanger, it is important to predict the frequency of vortex generated from the finned tube banks in forced convection. This paper described the characteristics of the vortex generation in the serrated finned tube banks with staggered arrangement in case of the different tube diameter and the different fin height. In consequence we clarified that three kinds of the vortex with the different frequencies (L, M, H type) generated in the low frequency region as well as the other type serrated finned tube banks, and that the fin height considerably effected on the Strouhal number. Further we proposed the equation for predicting the frequency of vortex generation in the serrated finned tube banks.
