Material setting

Rahul_P1
Rahul_P1
Altair Employee
edited October 2020 in Community Q&A

Hi,

I want to simulate time-dependant car cabin cool-down. However, how can I setting material for different surface?
From my study, only geometry volume model can be specify the material..

image

Please advice.
Thank You

z9788-2014-05-06_150014.jpg

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Answers

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited February 2015

    Yes, material is a volume depenedent property and can be assigned to a volume.
    What could be the reason for assigning material to a surface? Is it for radiation model?

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited February 2015

    Hi Patil,

    Yes, it is for radiation model.

    Regards

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited February 2015

    Kindly refer to following sections of AcuSolve-Command-Reference-Manual.pdf in your installation folder\acusolve\win64\doc\
    Global commands > Radiation
    Material Model Commands > Emmisivity Model

    You could specify emmisivity for different surfaces to achieve your modeling goals.

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited February 2015

    Hi patil,

    so thats mean each surfaces only need to define the emissivity model and solar radiation model?
    And, what about material properties such as specific heat (Cp), heat conductivity coefficeint and density?

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited February 2015

    Have you checked the 'Workshop10 – Modeling of Automobile Cabin using Solar and Enclosure Radiation' ?

    http://training.altairuniversity.com/analysis/cfd/cfd-acusolve-workshops/

    The workshop should answer most of the above queries.

    Anyways, materials (air) properties are required for CFD simulations and AcuSolve is no exception. Material properties would have to be defined and assigned to appropriate volumes .
    Emmisivity model need to be defined for surfaces.

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