Is this a transient solution? and how many dimensions are you considering? If this is 2D or 3D transient, are you using the MacCormack method?
http://en.wikipedia.org/wiki/MacCormack_method
Hello Mr. Benton, I am working on 2-D steady state momentum and energy equation using successive over relaxation method.
Is your fluid in horizontal motion with a considerable vertical shear and stratification?
N^2/du/dz can be used in that case, where N is the Brunt-Vaisala freuecy. Do you expect Kelvin Helmoltz instabilities?
Dr. Krishna,
Thanks for enlightening me about the present trend in finite difference scheme.
My problem is to develop a code which will be stable to work for higher Ri values.
As you can see in my publication section, I have uploaded a technical report in which at high Ri values, the results are not in good agreement with the author's work.
Let me know, if you can help me through this.
Thank You
I could under stand that I have given the limitations of using FDS with high Richardson number (ratio of PE to KE) used in convection problem, which is not relavent to your question as you have asked the precaustions. Hence I deleted my answer.
Regarding your problem, there must be some constants of using Re number with Ri number. Witth higher Richardson number, bionant forces are dominant.
The following literature may be useful for your studies
The computation of accurate Richardson number is shown to be adversly affected by a number of factors including the choice of vertical gradients, the terrain, spacing of instruments and heterogenous profile of wind and temparature. Certain precations were taken whle calculating Ri number
Ref: Richardson number in planetary boudary layer by Frank V Hansen
www.dtic.mil/dtic/tr/fulltext/u2/641560.pdf
Thank You Dr. Krishna.
I will go though the attached text link and will get back to you soon.
- Badges
- Science topic