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Topics - pitney1

Pages: 1 2 3 [4]
46
CFX / How do I simulate fires in CFX?
« on: February 13, 2012, 09:11:06 PM »
Hi,

I am new to CFX, how do I simulate fire in CFX?

Please help.

Thank you.

47
Fluent / The calculated temperatures is lower than specified temperature
« on: February 13, 2012, 09:03:12 PM »
Hi,

I am running a simulation with energy equation activated. The temperature at the outlet is lower than the specified temperature at the inlet. I have tetrahedral mesh.

Please help.

Thanks.

48
Fluent / Cavitation model with dynamic mesh doesn't converge!!!
« on: February 13, 2012, 08:55:29 PM »
Hi,

Cavitation model with dynamic mesh doesn't converge in Fluent 6.3. Please help.



49
Hi,

How do I identify the cells at the interface for heat and mass transfer at the interface in VOF model in fluent? Can any one help here?

Thanks.

50
Fluent / Error: Divergence detected in AMG solver: x-momentum
« on: February 11, 2012, 01:11:52 PM »
Why am I getting divergence on the first iteration for an axisymmetric problem?

I am running a 2d axisymmetric simulation but it diverges on the first iteration with the following message:

Divergence detected in AMG solver: x-momentum -> Increasing relaxation sweeps!

Error: Divergence detected in AMG solver: x-momentum
Error Object: #f


51
Hi,

The VOF simulation diverges with the error message: Global courant number is greater than 250. The velocity field is probably diverging?

Can someone help me?


52
I want to make a UDF which I can use for calculating mass-weighed average of the properties on a specified surface. Can any one give me something to start with?

Thanks.

53
Fluent / How can I remove a particle from a domain using UDF?
« on: February 06, 2012, 06:46:12 PM »
Hello,

I am doing multiphase simulation with particles tracked using lagrangian approach. I want to set a condition that when the particles hit a certain location in the geometry, the particles should get removed from the simulation. Its heat and mass balance along with it.

Can any one suggest me how to do this?

Thank you.

54
Hi,

The heat balance is not correct for interior surfaces of the boundary zones in Fluent? Can any one suggest me what am I doing wrong?

Thanks.

55
Hi,

How can I export DPM particle properties to a file. Any suggestions for writing a UDF?

Thanks.

56
Fluent / Howcan I calculate total dpm mass in a selected fluid volume?
« on: February 04, 2012, 07:57:35 PM »
I want to calculate total mass of the discrete phase in selected volume of the geometry. How can I do this does any one have any clue?

Thank you.

57
Fluent / How to compute fluid residence time using UDF?
« on: February 04, 2012, 04:45:47 PM »
Hello,

I want to compute fluid residence time using UDF. Can any one give me any guidance?

Thank you.

58
Fluent / Need a UDF for averaged properties at the outlet
« on: January 23, 2012, 08:39:38 PM »
Hi,

I am looking for a UDF code that calculates average of the particles temperature exiting at the outlet boundary condition in Fluent. Each particle has a different temperature because each particle has a different size flowing in the heated air flow.

Any suggestions?

Thank you.


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