Impinging Air Jet On Flat Plate for Cooling(Please Help)

Overdosed · March 16, 2013, 18:07

Hi everyone;

I'm doing a project which involved jet impingement on a flat surface for cooling

I'm using Ansys Fluent 13.

My Reynold number is about 46000

(8 mm nozzle diameter and 54 m/s jet velocity)

H/D =4

I'm using K-w SST or K-epsilon turbulance model.

Plate thickness is 4 mm

i used coarse meshing to be sure that im at the right way(after that i'm going to make fine meshing) but i can't see the temperature distrubution right to go on.After 45 seconds with transient process the centre of plate's temperature is high and the corners are lower. But the velocity vectors seem fine.

Please help me . This situation has driven me crazy for about one week.

(i only want to investigate heat transfer from plate. So do i have to model nozzle? is it necessary? )

taxalian · March 17, 2013, 08:46

Can you elaborate your problem a bit more like boundary condtions and inflow parameters.
Did you specify the temperature boundary condition on the plate wall.

March 16, 2013, 18:07	Impinging Air Jet On Flat Plate for Cooling(Please Help)	#1
Overdosed New Member Fırat Join Date: Oct 2012 Posts: 2 Rep Power: 0	Hi everyone; I'm doing a project which involved jet impingement on a flat surface for cooling I'm using Ansys Fluent 13. My Reynold number is about 46000 (8 mm nozzle diameter and 54 m/s jet velocity) H/D =4 I'm using K-w SST or K-epsilon turbulance model. Plate thickness is 4 mm i used coarse meshing to be sure that im at the right way(after that i'm going to make fine meshing) but i can't see the temperature distrubution right to go on.After 45 seconds with transient process the centre of plate's temperature is high and the corners are lower. But the velocity vectors seem fine. Please help me . This situation has driven me crazy for about one week. (i only want to investigate heat transfer from plate. So do i have to model nozzle? is it necessary? )

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March 17, 2013, 08:46		#2
taxalian Senior Member Join Date: Nov 2010 Posts: 139 Rep Power: 15	Can you elaborate your problem a bit more like boundary condtions and inflow parameters. Did you specify the temperature boundary condition on the plate wall.