Effect of Opposing Buoyancy on Two-Dimensional Laminar Flow and Heat Transfer Across a Confined Circular Cylinder

摘要

B - volume expansion coefficient, 1/K; C_D - drag coefficient; d - cylinder size, m; F - drag force, N; g - gravitational acceleration, m/s~2; Gr - Grashof number; H - Channel width, m; h - Local convective heat transfer coefficient, W/(m~2K); k - fluid thermal conductivity, W/(m~2K); L_d - downstream distance, m; L_u - upstream distance, m; n_s - direction normal to the cylinder surface; Nu - average total Nusselt number; p - pressure. Pa; P - dimensionless pressure; Pr - Prandtl number; Re - Reynolds number; Ri-Richardson number; T - temperature, K; U - dimensionless stream-wise velocity; u-stream-wise velocity, m/s; V - dimensionless cross-stream velocity; v - velocity cross-stream velocity, m/s; X - dimensionless stream-wise coordinate; V- dimensionless cross-stream coordinate; cross-stream coordinate, m.