平面上突起物まわりの二次元非定常流れと熱伝達の数値解析  [in Japanese] Numerical Analysis of Two-dimensional Unsteady Laminar Flow and Heat Transfer around a Rectangular Cylinder on a Surface  [in Japanese]

The present paper shows a numerical analysis of two-dimensional unsteady separated and reattached flow and heat transfer around a rectangular cylinder located on a wall in a channel with two parallel walls. The Reynolds number ranges from 100 to 1000. For R_e≤300,the flow is found to be steady. For Re=400〜1000,the separated shear layer becomes unstable accompanying the formation of spanwise vortices, and in a range of R_e≥500,the reattachment length steeply decreases as Re increases. These vortices grow behind a cylinder and are shed almost periodically. The details of the local heat transfer characteristics along with the flow behaviors are clarified.