1928 Flow Field and Impinging Jet Heat Transfer Influenced by Two Flat Plates Mounted near a Rectangular Nozzle Exit
Details
Measurement of pressure and heat transfer on a jet target plate and flow visualization were carried out for mounting two parallel plates near both sides of the nozzle exit. The jet velocity was kept constant at 10m/s for the experiment on the pressure and heat transfer and the Reynolds number based on nozzle width, h=15mm, was about 9500. The distance, H, between the nozzle and the target plate was 2, 3, 4 and 5 times of h. The space, W, between two parallel plates changed from 2.67h to 6.67h or 8h. The flow directions for the presence of the two parallel plates irregularly changed for top and bottom. The root mean square value of fluctuating wall pressure and local Nusselt number on the target plate varied with W/h values. The maximum local Nusselt number were augmented by about 50% compared to the ones for normal impinging jet.
