Analysis of transient mixed convection in a horizontal channel partially heated from below

The heat convection phenomenon has been investigated numerically (mathematically) for a channel located horizontally and partially heated at uniform flux with forced free convection. horizontal fluid inlet the enclosure was exposed to source from bottom while upper side kept constant temperature equal outlet temperature. Transient, laminar, incompressible mixed convective flow is assumed within channel. Therefore, field estimated using Navier Stokes equations, which involves Boussinesq approximation. While calculated standard energy model, where, Re, Pr, Ri are Reynolds number, Prandtl Richardson respectively. number (Re) changed during test 1 50 (1, 10, 25, 50) each case study, (Ri) 25 5, 15, 20, and, 25). average Nusselt (Nuav) increases exponentially Reynold local (NuI) rises in heating point. Then gradually stabilized until reaching endpoint of decrease over there. In addition, streamlines isotherms patterns very low value indicate transfer all values number. Furthermore, near source, rate rise that clarified behavior indicating maximum Nu No. 6, 12, 27 31 Re 1, 50, respectively