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Doubt with SPC in heat transfer (Steady State)

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

Hello again, 

 

I'm doing a tutorial, OS1080, and i didn't understand why is used SPC, with all the boxes of degrees of freedom uncheked. What the SPC is used for? The subcase is (Heat Thansfer (Steady State).  

I found something about SPC on Reference Guide. The first figure bellow.The Step 4, from tutorial, tell me to make this SPC. 

 

Thanks!

 

<?xml version="1.0" encoding="UTF-8"?>5ad78804e1778_SPCreferenceguide.thumb.PNG.9afd99be71c22ae3fe541e6d7d19dbbc.PNG

 

 

5ad78803f3656_Step4.PNG.a3af826c0587ca935959b1c4d2a7bec4.PNG

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    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi,

     

    A structural constraint spc_struct is applied on the RBE2 element to fix the pipe on the ground. Two empty load collectors, spc_heat and heat_flux have been pre-created. In this section, the thermal boundary conditions and heat flux are applied on the model and saved in spc_heat and heat_flux, respectively.

     

    Hope this helps :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20'> 

    User: "Karthic_22061"
    Altair Community Member
    Updated by Karthic_22061

    Hi @Prakash Pagadala,

     

    Hi,

     

    A structural constraint spc_struct is applied on the RBE2 element to fix the pipe on the ground. Two empty load collectors, spc_heat and heat_flux have been pre-created. In this section, the thermal boundary conditions and heat flux are applied on the model and saved in spc_heat and heat_flux, respectively.

     

    Hope this helps :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

     

    1. What do you mean by thermal Boundary condition in above post, is it temperature ?

    2. Why SPC with all the boxes of degrees of freedom unchecked ? does it mean Zero temperature ?

     

    Thank you in Advance

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi @Karthic

     

    1) Yes,

    2) Card edit the SPC and provide the temperature on the D entry of SPC.

    User: "Karthic_22061"
    Altair Community Member
    Updated by Karthic_22061

    Thank you Prakash :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi Prakash,

     

    Can i set just INITIAL TEMPERATURE in a Steady State analysis?

     

    Thanks in advance

    User: "Rahul Rajan_21763"
    New Altair Community Member
    Updated by Rahul Rajan_21763

    You can use TEMPD in Linear static case.