FLuent doesn't take into account the udf's code

ANSYSCOMPANSYSCOMP Member

Hello everyone

I would like to simulate a fluid flow over a flat plate under a body force by using UDF code.

My problem is that the result is like a model without body force. 

Below, you find my approach.

1. Interpreted to UDF code.

2. Hooking 

2.1

    

2.2

2.3

2.4

2.5 My problem is the lack of ::libudf ( according to the UDF manual)

3. Models===> Discret phase on

4. cell Zone Condition

5. Boundary Conditions :

5.1 Inlet velocity: have I to do 1 m/s or udf ?

In fact, In UDF code I have just coded the body force without inlet velocity. 
      UDF code: x=0  bforce=0

                        x!=0 bforce (i==0)= F(x,y)

                                 bforce (i==1)=G(x,y)

Can I use 02 macros in one udf code ? : Body_Force and DPM_BC (Velocity inlet)

6. Solution Methodes

>>> Pressure-velocity coupling : simple   (Without change)

7. Solution Controls (without change)

7. Solution Initialization 

>> STANDARD INITIALIZATION

>>> COMPUTE FORM: ALL-ZONES

>>>> x-velocity 1 m/s

>>> Initialize

8. Run calculation : The programm doesn't take into account the udf code .(The result is same to model without udf) 

thanks you

Comments

  • DrAmineDrAmine GermanyForum Coordinator
    edited May 5
    which approach?
  • ANSYSCOMPANSYSCOMP Member
    edited May 8

     

    ANSYSCOMP posted this 3 days ago - Last edited yesterday

     

    Hello everyone

    I would like to simulate a fluid flow over a flat plate under a body force by using UDF code.

    My problem is that the result is like a model without body force. 

    Below, you find my approach.

    1. Interpreted to UDF code.

    2. Hooking 

    2.1

        

    2.2

    2.3

    2.4

    2.5 My problem is the lack of ::libudf ( according to the UDF manual)

    3. Models===> Discret phase on

    4. cell Zone Condition

    5. Boundary Conditions :

    5.1 Inlet velocity: have I to do 1 m/s or udf ?

    In fact, In UDF code I have just coded the body force without inlet velocity. 
          UDF code: x=0  bforce=0

                            x!=0 bforce (i==0)= F(x,y)

                                     bforce (i==1)=G(x,y)

    Can I use 02 macros in one udf code ? : Body_Force and DPM_BC (Velocity inlet)

    6. Solution Methodes

    >>> Pressure-velocity coupling : simple   (Without change)

    7. Solution Controls (without change)

    7. Solution Initialization 

    >> STANDARD INITIALIZATION

    >>> COMPUTE FORM: ALL-ZONES

    >>>> x-velocity 1 m/s

    >>> Initialize

    8. Run calculation : The programm doesn't take into account the udf code .(The result is same to model without udf) 

    thanks you

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