[acoustica]

Hallo ,
I working on the field of Computational Aero acoustics. I would like to develop on Acoustic solve for the data from CFX, How long it would be reasonalble to choose openfoam . suggest me I am new to openfoam !!

[Alhasan]

hey have you had any success with Aeroacustics in openFOAM by anychance..???

[skeptik]

Hi!

I'm taking part in project which concerns with developing acoustic library for OF.

Today we have good results using Curle analogue but it's still tested on different cases. Later, Lighthill analogue may be realized as part of this library.

There are a lot of papers concerning with acoustic applications of the OF in the Internet.

If you're newbie in OF, i recommend you to study LES and later, when you'll get a little experience, start to learn OF Programmers Guide.

[Alhasan]

hey, ilya

i have been working with openFOAM for a year now and i have done enough RANS simulations and lil bit of LES, i would just like to know

- if i have to develop a postprocessing tool to convert the velocity fields into sound of some sort or is there any tool available to do this

- or develop a solver ? so solve for the sound

- or can i export the data to fluent to convert the velocity feilds in to sound

thanks,
hasan

[skeptik]

The library's developed in the ISP RAS uses Curle analogue which needs to calculate the force by which body penetrate to the media.

As the output it has acoustic pressure p' obtained from results of the LES simulations, so i think there is no need to develop new solver.

Unfortunately, I don't really know when library will be completed and opened for foamers.

[Alhasan]

im still not getting the idea...!!!! so after the LES simulations has been run.. the acoustic p will be calculated or during the LES simulation it will be calculated

thanks,
hasan.

[skeptik]

It's similar like calculating forces and coefficients via libforces.so in controlDict

[Alhasan]

lets hope the public release of this would be in a month or so ..