Periodicity of Combined Heat Transfer from Horizontal Cylinders.
COLORADO STATE UNIV FORT COLLINS FLUID DYNAMICS AND DIFFUSION LAB
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Based on experimental and flow visualization studies, a model for directly opposed free and forced convection flow around a heated cylinder 0.01 mm diameter was developed. Three modes of flow were identified. For velocities less than 15 cmsec cylinder Reynolds number 0.08 a free convection or a buoyant force dominated flow was observed. For velocities greater than 15 cmsec but less than 21.4 cmsec the magnitudes of the forced and free convection flows were nearly equal. A periodic oscillation of the stagnation region was observed. For velocities greater than 21.4 cmsec the forced convection was found to dominate over the free convection. The stagnation region was fixed for each flow velocity at one position above the cylinder. Author Modified Abstract
- Fluid Mechanics