|
[Sponsors] |
Hi I need to calculate Y+ value for jet Impingement over flat plate |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
June 9, 2023, 03:25 |
Hi I need to calculate Y+ value for jet Impingement over flat plate
|
#1 |
New Member
G. Nithyanandham
Join Date: May 2023
Posts: 4
Rep Power: 3 |
Last edited by Nithyanandham; June 9, 2023 at 03:27. Reason: Image was not added |
|
June 9, 2023, 14:49 |
|
#2 |
Senior Member
Kareem
Join Date: Nov 2022
Location: New York
Posts: 124
Rep Power: 3 |
Y+ is dependent on the shear stress at the wall which is in turn dependent on the velocity. For an impinging jet on a flat surface, your velocity will be 0 at the stagnation point, hit a maximum a few units out, and then taper off as the jet spreads over the plate. If your first cell height, delta Y, is consistent along the impingement surface then your Y+ will match the velocity. To confirm this you can plot a graph of the velocity over the same distance and you will see a similar curve.
You should use the maximum value of Y+ for you inquiry. Depending on the wall condition/solver you will want the Y+ number to be <1 everywhere in domain. The regions where Y+ is >1 may not be accurate. There is no need to use some different formulation of Y+. The phenomena you are seeing is correct and is not due to the calculation of Y+.
__________________
Please like the answer if it helped! Video Tutorials and Tips: https://www.youtube.com/@cfdkareem/featured |
|
June 12, 2023, 01:42 |
|
#3 |
New Member
G. Nithyanandham
Join Date: May 2023
Posts: 4
Rep Power: 3 |
Thank you for your response.
|
|
Tags |
jet impingement, sst komega, y+ calculation |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Chien's Turbulence model for flow over flat plate (y+ query) | Shiv1510 | Main CFD Forum | 9 | June 19, 2019 16:32 |
transient heat in jet impingement on a flat plate | waqarha2003 | FLUENT | 10 | February 1, 2018 14:50 |
Calculate Skin Friction Coefficient in a plate with a roughness pattern | Kyoto | FLUENT | 0 | August 23, 2013 23:52 |
Conjugate heat transfer for film-cooled flat plate | Michele | FLUENT | 0 | July 3, 2006 09:42 |
flat plate boundary layer data | Ekachai Juntasaro | Main CFD Forum | 3 | March 14, 2001 00:18 |