Rectangular-shaped radiators for motorcycles have been used previously in many cases. According with the latest high-power engines, to use arbitrary-shaped radiators is increasing to get high heat radiation within limited space. This type radiator has different cooling tube length. It is more difficult to predict heat radiation amount for this type than rectangular type as velocity distribution is uneven. Moreover, analysis regarding heat radiation characteristics has not been done sufficiently and dependency of flow amount on heat radiation has been unclear. By combining calculations of three-dimensional flow field and one-dimension heat radiation, a method that can predict heat radiation amount of arbitrary-shaped radiators easily and precisely has been constructed.
Article of Honda R&D Technical Review Vol.15 No.2 (235 - 242)