Experimental Study of Underexpanded Supersonic Jet Impingement on an Inclined Flat Plate

AIAA Journal ◽  
2006 ◽  
Vol 44 (11) ◽  
pp. 2691-2699 ◽  
Author(s):  
Yusuke Nakai ◽  
Nobuyuki Fujimatsu ◽  
Kozo Fujii
Keyword(s):  
Experimental Study ◽  
Flat Plate ◽  
Supersonic Jet ◽  
Jet Impingement ◽  
Underexpanded Supersonic Jet

An Experimental Study of Impingement Heat Transfer on the Surfaces With Micro W-Shaped Ribs

2015 ◽  
Author(s):  
Yu Rao ◽  
Peng Chen ◽  
Jiaqi Zhu
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Flat Plate ◽  
Pressure Loss ◽  
Cooling System ◽  
Cross Flow ◽  
Jet Impingement ◽  
Test Plate ◽  
Plate Spacing ◽  
Impingement Heat Transfer

The paper proposed an idea of using micro-W-shaped ribs on a test plate to improve the impingement heat transfer performance in a multiple-jet impingement cooling system. An experimental study has been conducted on the heat transfer characteristics of multiple-jet impingement onto a flat plate and a roughened plate with micro W-shaped ribs under maximum cross flow scheme. Transient liquid crystal thermography method has been used to obtain the detailed impingement heat transfer distribution for the Reynolds numbers from 15,000 to 30,000.The effects of micro W ribs on the local Nusselt number and the related pressure loss were investigated experimentally. The jet-to-plate spacing H/d=1.5 was used in the experiments for both the flat and the micro-W-rib roughened plate. The experiments showed that the micro W ribs on the plate can enhance the impingement heat transfer globally and locally, and increase the heat transfer uniformity, which are due to the facts that the micro W ribs on the test plate increase the near-wall turbulent mixing by interacting with the wall jets and cross flow. The pressure loss is negligibly increased compared to the impingement onto the flat plate.

Pressure Pulsations on a Flat Plate Normal to an Underexpanded Supersonic Jet

AIAA Journal ◽  
1978 ◽  
Vol 16 (6) ◽  
pp. 634-636 ◽  
Author(s):  
Lloyd H. Back ◽  
Virendra Sarohia
Keyword(s):  
Flat Plate ◽  
Supersonic Jet ◽  
Pressure Pulsations ◽  
Underexpanded Supersonic Jet

Experimental Study of Air Slot Jet Impingement Cooling From Cylinder Placed on a Flat Plate

2019 ◽  
Vol 12 (4) ◽  
Author(s):  
Ketan Atulkumar Ganatra ◽  
Dushyant Singh
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Nusselt Number ◽  
Flat Plate ◽  
Local Nusselt Number ◽  
Jet Impingement ◽  
Maximum Error ◽  
Constant Heat Flux ◽  
Impingement Cooling ◽  
Heated Cylinder

Abstract The experimental study for air slot jet impingement cooling from the heated cylinder is carried out. The heated cylinder is placed on a flat plate. The flat plate has an effective dimension as plate length (P) from heat transfer point of view. The heating of the cylindrical surface is done by providing a constant heat flux. The various parameters which affect the heat transfer from the cylinder are ReD, h/S, S/D, and P/D. The range of the parameters considered are ReD = 10,000–25,000, h/S = 4–12, S/D = 0.072–0.108, and P/D = 0–2. The effect of various parameters on heat transfer distribution (stagnation and local Nusselt number) from the cylinder is investigated. The local Nusselt number has a maximum value at θ = 0 deg and then it decreases upto θ = 180 deg. This trend is observed for all the parametric variations. The stagnation Nusselt number (Nustag) and local Nusselt number increases with the change of parameters as increase in ReD and S/D and decrease in h/S. However, Nustag remains independent with the change in P/D. The correlation for stagnation and mean Nusselt number is developed using regression analysis as a function of ReD, h/S, S/D, and P/D. The maximum error associated with the correlated value of Nustag and Num as compared with the experimental data is observed as ±13% and ±25%.

Experimental study of plate-angle effects on acoustic phenomena from a supersonic jet impinging on an inclined flat plate

2017 ◽  
Vol 142 (4) ◽  
pp. 2490-2490
Author(s):  
Masahito Akamine ◽  
Koji Okamoto ◽  
Susumu Teramoto ◽  
Seiji Tsutsumi
Keyword(s):  
Experimental Study ◽  
Flat Plate ◽  
Supersonic Jet

Two-Dimensional Supersonic Jet Impingement on a Flat Plate

AIAA Journal ◽  
1979 ◽  
Vol 17 (1) ◽  
pp. 4-5 ◽  
Author(s):  
T.-F. Zien ◽  
K.-Y. Chien ◽  
R.T. Driftmyer
Keyword(s):  
Flat Plate ◽  
Supersonic Jet ◽  
Jet Impingement ◽  
Two Dimensional
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