Two-dimensional Investigation of Free Convection Flow Field Around a Heated Horizontal Cylinder Immersed in Water Using PIV Technique

Abstract

In the current study, the phenomenon of free convection around a metal cylindrical with uniform heat flux is experimentally investigated using PIV technique. The experimental tests are performed in a qubic container that contains liquid water with free surface which a metal rod horizontally passes through it. To create a two-dimensional flow, two parallel planes are inserted in the container and then, the metal rod is passed though it. The tests are performed for different heights of water and their results are compared with each other. To measure flow velocity in a specified region, the PIV technique is used. The tests are implemented by using a 200 mW laser and a CCD camera of 25 fps. In the experiments, the particles having the same density of water are tracked through the container in a specified time interval to calculate the flow field around the rod. sequence analyses of flow field during the different moments obtains the unsteady flow field. Although removing the 3D effects of flow, the results show that the flow field is strongly oscillatory and unsteady.

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References

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Journal of Solid and Fluid Mechanics
Volume 4, Issue 1 - Serial Number 1
March and April 2014
Pages 107-117

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