Symbol lookup error in Fluent-EDEM coupling

Di Wu_22293
Di Wu_22293 Altair Community Member
edited April 2023 in Community Q&A

Hi, 

I encountered below error after clicking on the 'connect' button of Fluent->Setup->Models->EDEM coupling:

/app1/common/ansys/ansys_v21.1/ansys_inc/v211/fluent/fluent21.1.0/lnamd64/3ddp_host/fluent.21.1.0: symbol lookup error: lib_edem_coupling/lnamd64/3ddp_host/libudf.so: undefined symbol: ADAPTOR_init_connectEDEMCoupling_Address
 The fluent process could not be started.

My compilation was already done. 4 libudf.so were created. Before the error I've done below steps:

- copy /lib_edem_coupling and load_edem_coupling.jou into the case folder

- source set_edem_env_vars.sh in the same folder

- source set_fluent_env_vars.sh in the same folder

- create EDEM and Fluent case in the same folder

- open EDEM case, go to simulator and click on coupling server

- open Fluent case, read the load_edem_coupling.jou file, then go to Setup->Models->EDEM coupling then click 'connect'

- the error occurred in Fluent

Could you please help me check if anything in my steps was improper? Thank you!

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Answers

  • Stephen Cole
    Stephen Cole
    Altair Employee
    edited March 2023

    Hi Di,


    Have you previously run EDEM-Fluent simulations (I see there were previous questions on the topic), I was wondering if you had previously successful couplings if there was a change between the previous ones and this one?

     

    Regards

    Stephen

  • Di Wu_22293
    Di Wu_22293 Altair Community Member
    edited March 2023
    Stephen Cole_21117 said:

    Hi Di,


    Have you previously run EDEM-Fluent simulations (I see there were previous questions on the topic), I was wondering if you had previously successful couplings if there was a change between the previous ones and this one?

     

    Regards

    Stephen

    Hi Stephen,

    I'm sorry I haven't done a coupled simulation before as my team just offered me available licenses recently.

    I would like to share more info: I coupled Fluent 21.1 and EDEM 2022. Both cases are in the same folder, while the edem_coupling_build_headless folder is not in this folder (I only copied /lib* and the journal file)

    Thank you in advance for continuous support. Please let me know if you need more details.

  • Stephen Cole
    Stephen Cole
    Altair Employee
    edited April 2023
    Di Wu_22293 said:

    Hi Stephen,

    I'm sorry I haven't done a coupled simulation before as my team just offered me available licenses recently.

    I would like to share more info: I coupled Fluent 21.1 and EDEM 2022. Both cases are in the same folder, while the edem_coupling_build_headless folder is not in this folder (I only copied /lib* and the journal file)

    Thank you in advance for continuous support. Please let me know if you need more details.

    Hi Di,

     

    To follow-up did you compile the .so files on the same machine as the one you are running? It is OK to compile on different machines but the operating system and install folders need to be identical.  It seems from the error that it is related to compiling the .so files, so there may have been an error when compiling or that the environment variables on the machine are not set on the machine.

    I see from case https://support.altair.com/community?id=community_question&sys_id=53d3293c1b7ca910c4dfdbd9dc4bcb11 that this maybe related to the version of Linux, however it's difficult to say with this error.

    Regards

    Stephen

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