Abstract
Experimental investigation of the fluid flow and thermal flow pattern around two circular cylinders in cross flow has been carried out. Reynolds number was varied in the range of 100≦Re≦1000 and the distance between the two cylinders in the interval of 2≦L/D≦4. Velocity and turbulence intensity distributions in the isothermal distribution in the whole x−y thermal flow field was obtained by double-exposure holographic interferometry. The influences of Reynolds number and the gap spacing between the two cylinders were investigated. The characteristic flow pattern was found to depend on the distance between the two cylinders. WhenL≦3D, the wake region between the two cylinders became quasi-stationary.
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