[lachuktr]

Hello,

I am currently simulating atmospheric flow in Openfoam. I have to assign inlet velocity using an equation that varies with height z. I have created a CSV file (placed inside the 0 folder) for the data regarding the inlet velocity based on that equation.

Now I have to use this data using fixedProfile boundary condition. But the flow direction is 60 degrees anticlockwise to x-axis. while using fixedProfile BC, I am not able to change the flow direction. (flow direction is in x-direction default)


The inlet velocity boundary condition I used is as follows:

inlet
{

type fixedProfile;
profile csvFile;

profileCoeffs
{

nHeaderLine 0; // Number of header lines

refColumn 0; // Reference column index

componentColumns (1 2 3); // Component column indices

separator ","; // Optional (defaults to ",")

mergeSeparators no; // Merge multiple separators

file "0/uprofile.csv"; // name of csv data file


// outOfBounds clamp; // Optional out-of-bounds handling
// interpolationScheme linear; // Optional interpolation scheme
}


direction (0 0 1);


origin 0;
}


I am able to change the flow direction using atmBoundaryLayerInletVelocity boundary condition, but there I cannot use the custom values of velocity which I required (saved in CSV file)

kindly help.

[lachuktr]

any help ...... ?

[Rvadrabade]

Hi,

Can you share a little more information like solver you are using and some pictures of domain demonstrating inlet and other BCs?

Hint
1. Try out geometry/mesh transformation, however consider as last option
2. Why don't you create CSV with components of X velocity. If I am correct, you can set x-vel =U*cos60 and y-vel=U*sin60 , z-vel = 0