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-   -   About create new material (http://www.cfd-online.com/Forums/cfx/22570-about-create-new-material.html)

jasonchang May 18, 2006 04:04

About create new material
 
When i simulate fluid flow,I do it succesfully by use water as the material,but use a material created by myself, Error ,as below: | ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | NAME_MOD: Error finding variable "DRHODP_T" The material I create as follow: LIBRARY:

MATERIAL: Aluminium Liquid

Coord Frame = Coord 0

Material Description = Aluminium Liqid is used for foundry simulation

Material Group = Constant Property Liquids

Option = Pure Substance

Thermodynamic State = Liquid

PROPERTIES:

Option = General Material

DYNAMIC VISCOSITY:

Dynamic Viscosity = 0.0012[Pa s]

Option = Value

END

EQUATION OF STATE:

Density = 2.371 [g cm^-3]

Molar Mass = 27 [kg kmol^-1]

Option = Value

END

SPECIFIC HEAT CAPACITY:

Option = Value

Reference Pressure = 1 [atm]

Reference Temperature = 700 [C]

Specific Heat Capacity = 950 [J g^-1 K^-1]

Specific Heat Type = Constant Volume

END

THERMAL CONDUCTIVITY:

Option = Value

Thermal Conductivity = 217.7 [W m^-1 K^-1]

END

END

END END

Help me!Thank you in advance!


chayriss May 18, 2006 08:22

Re: About create new material
 
Dear jasong, I think this is not a ""Material Group = Constant Property Liquids""" you can try with Material Group = user , that is the first mixtake i see, I not sure, but I hoppe this can help you

best regards

chayriss

opaque May 18, 2006 09:30

Re: About create new material
 
Dear Jason,

I notice that you are setting the Specific Heat Capacity at Constant Volume instead of at constant pressure.. To convert from Constant Volume to Constant Pressure you need the derivative of density respect to pressure at constant temperature.. Perhaps the conversion has a bug..

Try setting the Cp instead..

Good luck,

Opaque..


jasonchang May 18, 2006 21:07

Re: About create new material
 
Dear chayriss ,opaque:

I modify the setting just as what you suggest,it works well.Thank you.

By the way,how to use ansys cfx10.0 to simulate solidification and fluid flow?I would appreciate if anyone can give me some advice.

It was said that just CEL can set up the modelling,Is it true?I am not good at FORTRAN language. Thanks in advance.


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