|March 24, 2016, 03:44||
Inadequate kinetic energy loss
Join Date: Feb 2016
Posts: 50Rep Power: 2
Hi to all.
Iím trying to estimate kinetic energy loss for turbine rotor wheel (I have one half of stage only).
Calculation residuals proved to be good as well as monitor points, so I plot a chart for kinetic energy loss spanwise distribution. I used two formulas:
1. dzita = (prel*in-prel*out)/(prel*in-p out)
2.dzita = (prel*in-prel*out)/(prel*out-p out),
where prel* is total pressure in rel frame. Actually I donít know which one is correct exactly.
But there's considerable part in the chart that yields negative loss!
I attached domain picture, expected chart and calculated one (via both formulas).
|Thread||Thread Starter||Forum||Replies||Last Post|
|question about turbulent kinetic energy||junker4236||Main CFD Forum||17||February 2, 2016 20:29|
|CFD by anderson, chp 10.... supersonic flow over flat plate||varunjain89||Main CFD Forum||17||February 11, 2015 10:47|
|How to exploit SGS kinetic energy with Smagorinsky model in LES||babakflame||OpenFOAM Programming & Development||3||December 14, 2014 07:58|
|A question about filtered kinetic energy||8cold8hot||Main CFD Forum||0||November 2, 2014 02:56|
|ATTENTION! Reliability problems in CFX 5.7||Joseph||CFX||14||April 20, 2010 15:45|