Problem in divergence term

titio · April 7, 2009, 08:27

Hi Foamers,

I am trying to model a flow where besides the newtonian stress there is an extra stress term. I am using the icoFoam, as the flow is transient.

I try to include the extra tension in foam using the term

fvc::div (stressP + (nuS*rho)*DR))

where stressP is the extra tension, DR is the deformation rate, nuS and rho are the newtonian fluid viscosity and desnity respectively.

The solver compiles but when I try to run the solver I get the error

keyword div((stressP+((nuS*rho)*DR))) is undefined in dictionary "/home/amartins/solver_viscoelastico/testes/teste10_2/system/fvSchemes::divSchemes"

What I doing wrong? Anyone can help me out?

Thanks

Antonio

olesen · April 7, 2009, 10:47

You either need to define a corresponding entry in your divSchemes sub-dictionary, or set a "default" entry.

April 7, 2009, 08:27	Problem in divergence term	#1
titio Senior Member Antonio Martins Join Date: Mar 2009 Location: Porto, Porto, Portugal Posts: 112 Rep Power: 17	Hi Foamers, I am trying to model a flow where besides the newtonian stress there is an extra stress term. I am using the icoFoam, as the flow is transient. I try to include the extra tension in foam using the term fvc::div (stressP + (nuSrho)DR)) where stressP is the extra tension, DR is the deformation rate, nuS and rho are the newtonian fluid viscosity and desnity respectively. The solver compiles but when I try to run the solver I get the error keyword div((stressP+((nuSrho)DR))) is undefined in dictionary "/home/amartins/solver_viscoelastico/testes/teste10_2/system/fvSchemes::divSchemes" What I doing wrong? Anyone can help me out? Thanks Antonio

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April 7, 2009, 10:47		#2
olesen Senior Member Mark Olesen Join Date: Mar 2009 Location: https://olesenm.github.io/ Posts: 1,715 Rep Power: 40	You either need to define a corresponding entry in your divSchemes sub-dictionary, or set a "default" entry.