[sphoenix09]

Hi all,

The fluent was working fine earlier without giving any environment variables to run an UDF, but after setting environment variables, i tried to start fluent with SDK, its opens and then disappears leaving behind the cortex error message as follows.

Error [cortex] [time 2/6/16 21:12:3]
C:\PROGRA~1\ANSYSI~1\v150\fluent\fluent15.0.0\cort ex\win64\cx1500.exe received fatal signal (ACCESS_VIOLATION)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.

Error [cortex] [time 2/6/16 21:12:5] Cortex received a fatal signal (SEGMENTATION VIOLATION).

Error [cortex] [time 2/6/16 21:13:22]
C:\PROGRA~1\ANSYSI~1\v150\fluent\fluent15.0.0\cort ex\win64\cx1500.exe received fatal signal (ACCESS_VIOLATION)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.

Error [cortex] [time 2/6/16 21:19:25]
C:\PROGRA~1\ANSYSI~1\v150\fluent\fluent15.0.0\cort ex\win64\cx1500.exe received fatal signal (ACCESS_VIOLATION)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.

Error [cortex] [time 2/6/16 21:19:27] Cortex received a fatal signal (SEGMENTATION VIOLATION).

How to solve this problem? Any help would be appreciated

Thank you

[`e`]

Uninstall whichever SDK software you're using (unless you need it for something other than Fluent) and remove the environment variables you've set. Then, install Microsoft Visual Studio Express (free); ensure the version you install is compatible with your Fluent version. If you get stuck, there are a number of threads on this topic as well as the Fluent FAQ page.

[sphoenix09]

Thank you for the reply. I installed new VS and SDK and its not giving any error now.

I am newbie to multi phase analysis and simulating a sloshing problem with sinusoidal motion of rectangular and cylindrical tank.

displacement = 0.01*sin(7*time)

I used the following udf to compute. Is this correct udf for such problem?

#include "udf.h"

#define omega 7
#define a 0.01

DEFINE_SOURCE(xmom_source, c, t, dS, eqn)
{
	real source;
	
	real time=RP_Get_Real("flow-time");
	
	if(time < 10)
	{
		source = - omega * omega * a * sin(omega * time) * C_R(c,t);
		
		dS[eqn] = - omega * tan(omega * time) * C_R(c,t);
	}
	
	else
	
	source = dS[eqn] = 0.0;
	
	return source;
}

here source term is acceleration. I'm not sure about this.

Any help would be appreciated.

Thank you.