Curle's analogy

I believe there is a mistake in the implemented acoustic analogy in OF-1706. The coefficient on the RHS should be 1/(4pi) instead of 4pi.

Probably change: pDash = 4*mathematical::pi/c0_ * (d/magSqr(d) & dfdt); to pDash = 1/4/mathematical::pi/c0_ * (d/magSqr(d) & dfdt);

changed the description

By Liang on 2017-08-23T15:34:26 (imported from GitLab project)

Dear @Liang ,

I will check with my colleagues on this topic.

Thanks, Prashant

Hi Prashant

You can also see Eqn3.3 in Curle's paper http://rspa.royalsocietypublishing.org/content/royprsa/231/1187/505.full.pdf

Note that Eqn3.3 calculates the density fluctuation. To obtain pressure fluctuation, multiple both sides by (speed of sound)^2.

Kind regards

By Liang on 2017-08-28T06:33:34 (imported from GitLab project)

Thanks for the reference and report @Liang

I'm yet to get in touch with my colleagues (various holidays!)

We should be back tomorrow.

mentioned in commit bb4a561554250ee600715f870a3f0504536f7256

By Andrew Heather on 2017-08-31T13:05:36 (imported from GitLab project)

Thanks for the bug report - fixed by commit bb4a5615

By Andrew Heather on 2017-08-31T13:06:14 (imported from GitLab project)

closed

By Andrew Heather on 2017-08-31T13:06:14 (imported from GitLab project)

mentioned in commit c9b6b090