CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Pressure force (http://www.cfd-online.com/Forums/fluent/36703-pressure-force.html)

shyam May 19, 2005 02:18

Pressure force
 
Dear all, I am doing cfd analysis to find wind pressure on anattena. With inlet velocity 16.67 m/s, I got static pressure around 169 pa and total pressure 206 pa. What pressure shall I consider as force, which is really acting on antenna, whether static or total(static + dynamic). Please help me


Luca May 19, 2005 04:41

Re: Pressure force
 
static. Luca

shyam May 19, 2005 06:06

Re: Pressure force
 
Hi luca But why only static? why not total?

Luca May 19, 2005 06:45

Re: Pressure force
 
Because you're interested in loads, so you need to evaluate the difference betweeen local static pressure and free-stream pressure (coefficient of pressure).Luca

us May 19, 2005 16:52

Re: Pressure force
 
It sounds confusing to me. Isn't it should be total pressure? If only Load consideration then Static pressure is fine. But when it's about pressure force, then there should be total pressure, if the surface where the pressure force is to be considerred is perpendicular to the flow. Luca, can you clarify my doubt?

Przemek June 5, 2005 06:40

Re: Pressure force
 
I have same problem but in the water. Since decembre I am looking for same answer. As I understand you should use static but you have to prepared so fine mesh in boundary to get in first layier dynamic pressure equal 0. please give me notice if you find some thing more?


All times are GMT -4. The time now is 22:23.