Incident Plane Wave

[bigmigfan]

I am trying to model the scattering of biological cell. So far what I have is a solid sphere (cell with elastic properties) inside a hollow sphere (FLUID-Water) with fluid-solid interface and aborption boundary. Technically, this is a fluid-structure coupled acoustic analysis.

Only thing I am having trouble with is creating an incident plane wave. I used plwave command but it doesnt work.

"Main Menu>Preprocessor>Loads>Define Loads>Apply>Electric>Excitation>Define Wave"

Above is the menu path to define the plane wave. But the "Electric" option has disappeared for some reason and I am not able to access it. I even tried turning on all the options in "Preferences" but it still wouldnt show up.

Any Acoustic genius out there?

 

[bigmigfan]

Also, I used the following elements types:

SOLID45 (solid sphere)
FLUID30 (water-with both structure present and absent option )
FLUID130 (Absorption Boundary)

 

[cloche]

The elements you describe don't have any electrical property, so I suppose Ansys will not show you electrical load options (never done this kind of analyses, but I'm following the general Ansys logic...).
Did you already try "Preprocessor>Physics>Coupled Solvers>Elec/Struc"?

 

[bigmigfan]

Thanks Cloche..

This is exactly what I had in my mind. I have to define HF series element types which has electro-magnetic properties. I tried Preprocessor>Physics>Coupled Solvers>Elec/Struc, but dont know how to play around with it. Anyhow, there must be another approach to this problem. Thanks a lot for your help.