[wes1204]

hello

I am simulating scalar transport problem in open channel.

the channel width is 3 m and water depth is 1 m.

the dye is injected near the inlet.

the problem is that the diameter of injector is too small. it is 0.001 m look like needle.

the ratio channel width and height to injector diameter is very big!!

I cannot make each cell size like this diameter (0.001 m).

Although I use snappyhex or refineMesh to make this diameter, the number of cell in domain is too many.

so I insert the injection point inside the code like below,

C[mesh.findCell (point (2.13, 22.5, 0.0575))] = 100000;

however the scalar value which I specified was diffused around point because OpenFoam use FVM method.

Is there any method to make very small injector in my case???