Influence of asymmetric blockage at flow exit on flow and heat transfer for an impinging slot jet on semi-concave surface

Hoang, T.K.D.; Brizzi, L.E.; Dorignac, E.; Fénot, M.

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Influence of asymmetric blockage at flow exit on flow and heat transfer for an impinging slot jet on semi-concave surface

Hoang, T.K.D.; Brizzi, L.E.; Dorignac, E.; Fénot, M.

URI: http://hdl.handle.net/2263/40850

Date: 2008

Abstract:

Paper presented at the 6th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 30 June - 2 July, 2008.

Experimental studies of single slot jet impinging upon a concave surface are conducted by classical Particle Image Velocimetry (PIV) and infrared thermography, with nozzle exit Reynolds number (Re = 3200), dimensionless impinging height (H/b = 3 & 7) and relative curvature of the wall (Dc/b = 5). Results indicate that the oscillatory impinging jet generated a uniform and symmetric heat transfer area while the stabilized impinging jet caused an asymmetric heat transfer. This type of jet may be controlled by changing the outlet condition.

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