Learning Forum

[mmoataz]

I have a geometry that looks like 2 concentric cylinders surface and I want to show the shear stress on its walls. Is there a clipping cylinder functionality in CFD Post that allows me to do so?nThe option of adding a named selection for walls in Ansys Mechanical to use them afterwards as locations in CFD Post is not applicable here since the walls are irregular and I will need to manually select many faces (more than 3000)n

[Keyur Kanade]

I am not sure if I understand your question correctly. nYou can check Insert - Location - Surface of Revolution. nYou can also check Insert - Location - User Surface - Offset from surface. nPlease see help manual for more details about these commands. nnRegards,nKeyurnGuidelines for Posting on Ansys Learning ForumnHow to access ANSYS help linksnn

[mmoataz]

I don't want to create a contour on a cylindrical surface. I want to section the view using a cylinder .nFor example, in CFD Post there is an option named Clip Plane to allow us to take a section in the result data and we can control which side we want to see by the normal vector. What I want is a Clip Cylinder instead and to be able to similarly be able to see what's inside or outside the cylinder by a normal vector.n

[Rob]

You can create a variable that's a function of x and y (think Pythagoras) and clip to that. n

[mmoataz]

I've defined an expression sqrt(X*X+Y*Y) and created a variable (ClipCyl) from it then added a new Iso Clip with the following visibility parametersnbut when I click on apply I get a warning Unable to create element interpolant for iso-clip. Node interpolants will be used. and when I click OK no clipping happens. I just find a circle drawn on surfaces crossing the cylinder. Should I use another option than Iso Clip?n

[Amine Ben Hadj Ali]

So you want to just visualize a portion of the cylinder wall? Does this summarize what you want to do?n

[Amine Ben Hadj Ali]

If the result is from Fluent, export then axial, radial components and use them to clip whatever you want. Along which direction you want to clip? With your options applied to a wall it might be result in a circle.n

[mmoataz]

I have 2 concentric helical coils that look from the top view as followsnnThe problems is when I show results on the walls of the coils, much of the results are hidden because each coils hides behind it part of the other. The solution would be to make a clip cylinder like the one shown in red and to clip using the cylinder radius.nCould you please describe how to export the axial, radial components from fluent to cfx post?n

[Rob]

In Fluent I'd create the function, then I'd create an iso-clip of the wall surface to function

[Amine Ben Hadj Ali]

The clip you want to make can be done by offset from of the coil walls or a surface of revolution. I still do not see why creating a section for a pipe is not feasible. Your clip will just cut the pipe cresting a cross section. n