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- From: pwjones@lanl.gov (Phil W. Jones)
- Subject: Re: Compressibility
- Message-ID: <1992Nov19.194747.10753@newshost.lanl.gov>
- Sender: news@newshost.lanl.gov
- Reply-To: pwjones@lanl.gov
- Organization: Los Alamos National Laboratory
- References: <1992Nov19.171006.2255@ucsu.Colorado.EDU>
- Date: Thu, 19 Nov 1992 19:47:47 GMT
- Lines: 40
-
- In article 2255@ucsu.Colorado.EDU, hatay@spot.Colorado.EDU (Ferhat F. Hatay) writes:
- >
- > I want to derive the energy equation in its full
- > glory with true compressibility effects without
- > an approximation like Boussinesq's.
- > I am tempted to introduce a Mach number but I don't know
- > how much sense this would make for geophysical/enviromental
- > flows. Can you direct me to the proper references?
- >
-
- Many basic fluids texts will at least show you the basic equation
- with no approximations. For a specific example on how to scale
- such things, walk down the street a little ways to the JILA reading
- room and look up my thesis and theses of Hurlburt, Merryfield, Xie
- and all the other students of Juri Toomre who have done fully
- compressible convection.
-
- Basically, you do end up scaling velocities with the sound speed
- at some point. If you would rather not resolve acoustic waves,
- you might think about doing an anelastic approximation which
- filters out acoustic waves, but still retains other aspects of
- compressibility (buoyancy braking, etc.). There are some
- references to anelastic convection simulations also in my
- thesis.
-
- Good luck,
-
- Phil
-
-
- ---
- /----------------------------------------------------------------------\
- | It's hard to keep up with the Joneses. Douglas Wiley - born 9/4/92 |
- |----------------------------------------------------------------------|
- | Philip W. Jones Email: pwjones@lanl.gov |
- | EES-5 MS F665 Phone: (505)-667-6387 |
- | Los Alamos National Laboratory FAX: (505)-665-3687 |
- | Los Alamos, NM 87544 |
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