A steady-state numerical solution of the Navier-Stokes and energy equations around a horizontal cylinder at Reynolds numbers from 100 to 500
Abstract
A numerical analysis of forced convection heat transfer from a horizontal stationary cylinder dissipating a uniform heat flux in a crossflow of air is conducted by solving the full 2D steady-state Navier-Stokes and energy equations in the range of the Reynolds numbers from 100 to 500 (based on diameter). Dependence on the Reynolds number of the flow and thermal fields, vorticity and pressure distributions, separation angle, coefficient of drag, and local and average Nusselt number around the cylinder are shown. Quantities such as pressure and Nusselt number at the forward and rear (base) stagnation points are also calculated and correlated as functions of Reynolds number. The local and average values of the Nusselt numbers are shown to be in good agreement with available correlations and experiments. A new correlation for the mean value of forced convection Nusselt number based on 27 previous studies, including the present results, is proposed. Theoretical predictions and available experimental data are found to be in agreement. Theoretical prediction of the thermal field has no precedent.
- Publication:
-
AIAA, 28th Thermophysics Conference
- Pub Date:
- July 1993
- Bibcode:
- 1993thph.confS....A
- Keywords:
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- Convective Heat Transfer;
- Cylindrical Bodies;
- Navier-Stokes Equation;
- Steady Flow;
- Computational Fluid Dynamics;
- Forced Convection;
- High Reynolds Number;
- Fluid Mechanics and Heat Transfer