Tips & Tricks

How do I run the RAYON solver in Linux?
To solve for intermediate BEM results, set the solve options to write out files from VA One. The log window will contain information about where the files are written, MODEL name, and BEM FLUID names,
Emna Ben Ali Vibro-Acoustics

Difference in subsystem properties for a mirrored ribbed singly curved shell
Why is there a slight difference in subsystem properties for a mirrored ribbed singly curved shell? The reason is that the normal of the singly curved shell is flipped,
Emna Ben Ali Vibro-Acoustics

How does VA One SEA calculate the power from TBL?
In the calculation of the power input, the calculated or user-defined pressure is the band-integrated mean-square pressure, whilst the other TBL parameters, decay coefficients, convection wavenumbers, free flow velocity etc., are used to calculate the narrowband spatial correlation function which is used in determining the joint acceptance
Emna Ben Ali Vibro-Acoustics

Extending the FMM kD range
This is currently (VA One 2009) limited by the software. Two possible options (that we could consider for the future)...
Emna Ben Ali Vibro-Acoustics

FE area junction incomplete/ broken? What can be done ?
The problem is most likely due to the FE acoustic mesh having finer/higher mesh density than the structural FE mesh.
Emna Ben Ali Vibro-Acoustics

How do I create an SEA cavity using shrinkwrap?
Procedure to shrinkwrap geometry ...
Emna Ben Ali Vibro-Acoustics

Options for computing mass local properties in VA One 2013
The ways to compute local mass properties are ...
Emna Ben Ali Vibro-Acoustics

What is the Sturm sequence?
It provides a quick way to calculate the number of local modes in an FE subsystem without performing a detailed Eigen solution (which is much costlier).
Emna Ben Ali Vibro-Acoustics

Difference in performance and requirements when solving in the GUI vs. in batch
Is there a difference in performance and requirements when solving in the GUI vs. in batch? Yes, there is a difference in how data is saved in the solve process.
Emna Ben Ali Vibro-Acoustics

Applying anechoic termination to a muffler tailpipe modeled with FE acoustics
To apply an anechoic termination, disconnect the SIF from the FE Face, then go to ...
Emna Ben Ali Vibro-Acoustics