Abstract
Direct numerical simulation was performed for turbulent heat transfer from wavy surfaces. Treated surface geometry was symmetric sine curve and asymmetric curve, the latter of which was generated by the coordinate transformation of the symmetric sine. Following conclusions are obtained: (1) There is similar trend of heat transfer between wavy surfaces and sand roughness when equivalent sand roughness is used for data arrangement. (2) Forward-bent deformation of wavy surface can enhance heat transfer from the wall.
