Numerical investigation of effect of semi-circular confinement bottom opening angle for slot jet impingement cooling on heated cylinder

2020 ◽  
Vol 149 ◽  
pp. 106148
Author(s):  
Ketan Atulkumar Ganatra ◽  
Dushyant Singh
Keyword(s):  
Numerical Investigation ◽  
Jet Impingement ◽  
Opening Angle ◽  
Impingement Cooling ◽  
Heated Cylinder

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%.

Sign in / Sign up

Export Citation Format

Share Document