The present study analyzes conjugate heat transfer in a differentially heated square cavity. The left wall of the cavity is cooled, and the right wall is heated while the horizontal walls are adiabatic. Normalized continuity, momentum and energy transport equations were solved with the aid of COMSOL Multiphysics 5.4 software. The effects of Rayleigh number in the range of 102 ⩽ RA ⩽ 106 and Prandtl number in the range of 0.71 ⩽ PR ⩽ 100 on streamlines, isotherms, and the overall heat transfer in the cavity are reported. The results show that for all the Rayleigh numbers considered, the local Nusselt number and the average Nusselt number increase with increasing value of Rayleigh number. Furthermore, for 0.71 ⩽ PR ⩽ 100, the study reveals that Prandtl number has a minimal effect on the overall rate of heat transfer.

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The current paper presents a computational fluid dynamic analyses of the flow characteristics over an inclined NACA 0012 airfoil using various turbulence models at Mach number of 0.13. The primitive continuity and momentum equations were solved using Ansys-Fluent in turn along with Spalart-Allmaras, Realizable k – ε , and k – M shear stress transport. The response of pressure and velocity contours, lift coefficient ( Cl ) and drag coefficient ( Cd ) to inclination angle variation from – 14° to 20° are reported. Also, the values of Cl and Cd obtained from the current work were juxtaposed with the equivalent values of experimental data gotten from earlier work done by Abbott and Von Doenhoff and the comparison showed good agreement. Furthermore, the results revealed that stalling occurred between 14° and 16°.