C305 BEHAVIOR OF MIXED CONVECTION NEAR THE BEGINNING POINT OF HEAT TRANSFER SECTION BETWEEN INCLINED PARALLEL PLATES WITH UPWARD OR DOWNWARD AIR-FLOWS(Mixed convection)

概要

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Numerical analyses have been conducted for the mixed convection of upward or downward air-flows in the thermal entrance region between inclined parallel plates with uniform wall temperature. The governing equations using the usual Boussinesq approximation are solved for the symmetrically and asymmetrically heated parallel plates. Results are presented to show how the flow and thermal fields in the vicinity of the beginning point of the heat transfer section are affected by the buoyancy and the axial diffusion of momentum and heat for various inclination angles of parallel plates. The correlation equations of (C_f/C_f^*)_0 and (Nu_x/Nu_x^*)_0 versus Ra, Re, and inclined angles φ for two flow types and three thermal conditions were deduced from the numerical results to show the behavior of buoyancy in the upstream region along with axial conduction in the fluid.
一般社団法人日本機械学会の論文
2000-10-01