to obtain a new variable value in each cell

ARUN K RAJ · March 1, 2015, 08:03

Hi Members

I want to obtain the mass transfer in each cell of my mesh. I have added the necessary equations. I have included a no_read, auto_write command in createField.H,bt it seems that it writes only a single value for the entire time per run. hw do i calculate the mdot for each cell???? is there any changes to be made in the runtime loop of solver.C file too?
And also is there any way to change volScalarField to dimensionedScalarField?

rapierrz · March 1, 2015, 09:13

Hi arun. D is a scalar and change in each cell per time

volScalarField D
(
IOobject
(
"D",
runTime.timeName(),
mesh,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh,
dimensionedScalar("D",dimensionSet(0,2,-1,0,0,0,0), scalar(0.0))
);

ARUN K RAJ · March 1, 2015, 10:46

Hi Alireza,

I have done a similar thing as you told

-->
volScalarField massflow
(
IOobject
(
"massflow",
runTime.timeName(),
mesh,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh,
dimensionedScalar("massflow", dimensionSet(1, -1.25, 0.5, 0, 0), scalar(0.0))
);

but the problem is it shows the value zero in the write files in each time intervals

do we have to change smthng else too. I have seperately named a header file containing masstransfer containing the equation for mass flow. still i get all values as zero

March 1, 2015, 08:03	to obtain a new variable value in each cell	#1
ARUN K RAJ New Member ARUN Join Date: Jan 2015 Location: Kerala Posts: 18 Rep Power: 11	Hi Members I want to obtain the mass transfer in each cell of my mesh. I have added the necessary equations. I have included a no_read, auto_write command in createField.H,bt it seems that it writes only a single value for the entire time per run. hw do i calculate the mdot for each cell???? is there any changes to be made in the runtime loop of solver.C file too? And also is there any way to change volScalarField to dimensionedScalarField?

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March 1, 2015, 09:13		#2
rapierrz Senior Member Hesam Join Date: Feb 2015 Posts: 139 Rep Power: 11	Hi arun. D is a scalar and change in each cell per time volScalarField D ( IOobject ( "D", runTime.timeName(), mesh, IOobject::NO_READ, IOobject::AUTO_WRITE ), mesh, dimensionedScalar("D",dimensionSet(0,2,-1,0,0,0,0), scalar(0.0)) );

March 1, 2015, 10:46		#3
ARUN K RAJ New Member ARUN Join Date: Jan 2015 Location: Kerala Posts: 18 Rep Power: 11	Hi Alireza, I have done a similar thing as you told --> volScalarField massflow ( IOobject ( "massflow", runTime.timeName(), mesh, IOobject::NO_READ, IOobject::AUTO_WRITE ), mesh, dimensionedScalar("massflow", dimensionSet(1, -1.25, 0.5, 0, 0), scalar(0.0)) ); but the problem is it shows the value zero in the write files in each time intervals do we have to change smthng else too. I have seperately named a header file containing masstransfer containing the equation for mass flow. still i get all values as zero