How do I resolve the following error: FLUENT received fatal signal (ACCESS_VIOLATION)?
as referred to http://www.eureka.im/89.html
This is the standard error caused by FLUENT trying to access data that has not been allocated.
There are several causes which we will discuss.
For example, in a UDF, you may probe the cell temperature using the macro C_T(c,t). However, if you have not turned the energy equation on, then there is NO temperature stored, and you will get an ACCESS_VIOLATION.
To check a Thread for whether a variable is stored on it, you can use the THREAD_STORAGE(t, SV_XXX) macro, where SV_XXX is the storage variable for the equation of interest. For the energy equation, you would use SV_T. This macro returns a pointer to the data. The value is NULL if the data is not available. See storage.h for a complete list of storage variables.
Another cause for the macro is that your case has a UDF hooked, but you do not have the UDF available. The solution is to make sure you have the UDF directory in the correct location relative to the case file.
from
http://www.cfd-online.com/Forums/fluent/106319-fluent-received-fatal-signal-access_violation.html
This is what I would do but there is many not be it.
Do General -> Check to see whether there is anything obvious you are missing. This will also do the mesh check.
Change the Compute from options in the Standard Initialization and it will give different Initial Values below. See whether there is any boundary condition which give strange values (e.g. very high velocities or temperature)
Go throught the boundary conditions and check they are fine. If you still cannot see it turn all the boundary condition to wall except one inlet and one outlet and do initialization. If successful change back other boundary conditions to fish the error out.
Good luck.
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