pressure previous time steps

silversea12 · August 8, 2023, 13:34

There were these two macros, C_P_M1(c,t) and C_P_M2(c,t), to get pressure previous time steps in the earlier versions of Ansys Fluent.

But, I couldn't find them in the newer versions of Fluent (2020 or newer) UDF manual.

Are they still exist and can be used?

I tried to use C_P_M2(c,t) in a UDF, but it encountered a memory error.

================================================== ============================

Node 2: Process 8324: Received signal SIGSEGV.

================================================== ============================

================================================== =================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= RANK 0 PID 21220 RUNNING AT DESKTOP-JV8VLIU
= EXIT STATUS: -1 (ffffffff)
================================================== =================================

Any information or suggestion?

AlexanderZ · August 8, 2023, 21:59

seems like its not available for pressure

silversea12 · August 8, 2023, 22:25

Any particular reason why they deleted these previous time steps macros just for pressure?
These macros exist for other parameters, e.g. density, temperature, but not for pressure!

August 8, 2023, 13:34	pressure previous time steps	#1
silversea12 New Member silver Join Date: May 2018 Posts: 7 Rep Power: 8	There were these two macros, C_P_M1(c,t) and C_P_M2(c,t), to get pressure previous time steps in the earlier versions of Ansys Fluent. But, I couldn't find them in the newer versions of Fluent (2020 or newer) UDF manual. Are they still exist and can be used? I tried to use C_P_M2(c,t) in a UDF, but it encountered a memory error. ================================================== ============================ Node 2: Process 8324: Received signal SIGSEGV. ================================================== ============================ ================================================== ================================= = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = RANK 0 PID 21220 RUNNING AT DESKTOP-JV8VLIU = EXIT STATUS: -1 (ffffffff) ================================================== ================================= Any information or suggestion?

August 8, 2023, 21:59		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	seems like its not available for pressure __________________ best regards ****************************** press LIKE if this message was helpful

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August 8, 2023, 22:25		#3
silversea12 New Member silver Join Date: May 2018 Posts: 7 Rep Power: 8	Any particular reason why they deleted these previous time steps macros just for pressure? These macros exist for other parameters, e.g. density, temperature, but not for pressure!