derivative definition of velocity IN CFX
Hi,
How do i can define velocity derivative as follow: http://upsara.com/images/kwwk_eeeeeeeeeeeee.jpg Thanks. Best. Aja |
u.grad_x and so on for uvw and xyz.
Look in the CFX reference manual for the full list of variables, functions and operators on variables (like the gradient function). |
Quote:
Should I define in Expressions? or user functions? I want to obtain a contour by using above function in post 1. |
I created as follows:
Now, How can i call this formula in contour panel? I want to obtain a contour by using defined function. Rotary is whole computational domain. Method is single reference frame. in Fact, i rotate whole computational domain. What is "Value=0.00490041"? |
I was wrong.
I created a new variable in expression panel as follows: And then volume integral : http://upsara.com/images/2o7a_22222.jpg It is ok, but now How do i obtain a contour by using variable RRR? There is variable RRR in contour panel: http://www.upsara.com/images/t2va_%D...8%BA%D8%BA.png |
For contours, you can only plot variables, not expressions. You must create a new variable. And then maker the definition of that variable your expression.
|
Quote:
According the following picture, i created new variable(VVV). Right? http://upsara.com/images/fcjn_%D9%81...9%81%D9%81.jpg But, the contour of new variable(VVV) is not very good and clear, there are not different colors in the following contour of this new variable. why? http://www.upsara.com/images/yo4_66666.jpg http://www.upsara.com/images/x0na_55555.jpg Thanks |
Quote:
you probably need to adjust your color range. 'local' is a good first shot but a lot of times you still too coarse. You probably know in which range your values should be - so start with that range. Something like min= 0 , max=10. Or min=10, max= 100. Etc. |
Quote:
|
Thanks.
Now I want to export this contour to tecplot format. there was tecplot format in Fluent(for exporting), but i dont see this format in CFX. I am grateful that guide me about this case. |
All times are GMT -4. The time now is 23:26. |