22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-3.1.4

AN EXPERIMENTAL INVESTIGATION OF A RECTANGULAR JET IMPINGING ON A FLAT SURFACE OBLIQUELY

H. Acar (1), V. Atli (2)
(1) Istanbul Technical University, Turkey; (2) Civil Aviation School, Erciyes University, Turkey

Keywords: rectangular jet, impingement, flat surface, oblique

Jet impingement has many applications in aeronautics and industrial aerodynamics. The effect of the impingement angle on the jet impingement flow is studied for the Reynolds number of 1.05x105. Impingement angle is taken as 00, 50, 100, 150 and 200. Nondimensiomalised impingement distance is H/w = 3.08. The mean velocity and turbulence intensity profiles are measured by using a constant-temperature hotwire anemometer. Surface pressure distributions along the impingement surface were measured for comparison with hot-wire resukts. Surface oil-film technique and smoke visualization method was used to visualize the flow pattern.

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