Search Results

Showing results 1 to 11 of 11
Search took 0.00 seconds. Search: Posts Made By: Lukas

Forum: STAR-CCM+

September 11, 2009, 11:45

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

I needn´t the heat exchanger tool, because I´m...

I needn´t the heat exchanger tool, because I´m not interested in heat transfer. For me is only the velocity relevant for analyzing the flow induced tube vibration.

Forum: STAR-CCM+

September 11, 2009, 11:24

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

Ok, I have the solution. Bramv101, thanks for...

Ok, I have the solution.
Bramv101, thanks for your help.

Forum: STAR-CCM+

September 11, 2009, 09:54

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

Ok, I will go for one constant Pi and Pv. I´ve...

Ok, I will go for one constant Pi and Pv.
I´ve got a tube bundle heat exchanger with liquid media. The tube bundle should be replaced by a porous media.

If I plot the dp/L (y- axis) and v...

Forum: STAR-CCM+

September 11, 2009, 04:24

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

I want to make the coefficients a function of the...

I want to make the coefficients a function of the velocity outside of the porous media, because this velocity isn´t constant.

Forum: STAR-CCM+

September 10, 2009, 06:17

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

Yes, the velocity is distributed over the face of...

Yes, the velocity is distributed over the face of the porous media. Because of this I think, that I will make a failure, if I calculate one coefficient for this different velocities.

Forum: STAR-CCM+

September 8, 2009, 10:09

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

This is fact. I´m aware of this. But the velocity...

This is fact. I´m aware of this. But the velocity of my fluid, before it permeates the porous media, is between 0 and 2,5 m/s. And for this velocity I have to define my coefficients. If i have a...

Forum: STAR-CCM+

September 2, 2009, 12:15

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

The problem is ,that my velocity isn´t constant,...

The problem is ,that my velocity isn´t constant, so my Pi changes, too.

Lukas

Forum: STAR-CCM+

September 1, 2009, 09:17

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

Ok, it sounds plausible, but I´m not a expert...

Ok,
it sounds plausible, but I´m not a expert in using Star-CCM+ :)
Can you give me a step by step manual to do that.
I just managed to create a table where the porous inertial resistance is...

Forum: STAR-CCM+

September 1, 2009, 04:30

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

Thanks for your answer, but how I have to...

Thanks for your answer,

but how I have to declare the field function, that it is according to my table?

Lukas

Forum: STAR-CCM+

August 31, 2009, 10:44

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

I calculated the pressure drop with equations...

I calculated the pressure drop with equations from the VDI heat atlas.
The porous inertial resistance can be calculated like this:

Pi = dp/dl * 1/v²

Is it allowed to remove the porous viscous...

Forum: STAR-CCM+

August 31, 2009, 06:57

Replies: 21

porous inertial resistance

Views: 17,356

Posted By Lukas

porous inertial resistance

Hallo,

I want to model an tube bundle heat exchanger. The tube bundles are replaced by a porous media.
My problem is, that the porous inertial resistance is a function of to the fluid velocity.
...

Showing results 1 to 11 of 11

Forum Jump

All times are GMT -4. The time now is 03:09.