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- From: oghattas+@cs.cmu.edu (Omar Ghattas)
- Subject: Re: Theory about Fluid-Structure ?
- Message-ID: <C1AMG5.Fsv.1@cs.cmu.edu>
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- Organization: School of Computer Science, Carnegie Mellon
- References: <1993Jan21.115722.29874@dutrun2.tudelft.nl> <1VZ0S9Q@math.fu-berlin.de> <1993Jan21.154511@roper.mc.ti.com>
- Date: Sat, 23 Jan 1993 06:09:30 GMT
- Lines: 38
-
- In article <1993Jan21.154511@roper.mc.ti.com> a722756@roper.mc.ti.com (W. Donald Rolph) writes:
- >
- >The proposed method of either Han or myself will couple the navier-stokes
- >(actually the energy equation is more general I think - comments Han), and the
- >dynamic equations of the solid. It was exactly the elasticity of the fluid
- >acting against the dynamic behavior of the soldi which Olsen writes about.
- >--
- >
- >Regards.
- >
- >Don Rolph a722756@pan.mc.ti.com WD3 MS10-13 (508)-699-1263
-
- If my memory serves me correctly (and it often doesn't), the 1985
- Olsen-Bathe paper considers a linear solid and a stationary, inviscid
- fluid. The governing equation of the fluid is then the wave equation,
- while the solid is described by Navier's elastodynamics equations.
- Such problems arise in the study of structural acoustics, in which one
- is interested in the scattering and radiation of pressure waves from
- an elastic body. However, this problem is not really one of aeroelasticity
- (about which Olivier asked), since the fluid domain is not affected by
- solid deformations.
-
- Don is right is saying that the general nonlinear equations of both media
- can be coupled, and the problem solved (in principle) straightforwardly.
- In fact, we are developing a variationally-based FEM approach to the
- solution of finite elasticty--viscous flow interaction problems. I hope
- to have a paper ready by Spring; drop me a line if you're interested in
- receiving a copy.
-
- Cheers,
- Omar
-
- ========================================================================
- Omar Ghattas ghattas@cmu.edu
- Computational Mechanics Group (412) 268-2949 (office)
- Department of Civil Engineering (412) 268-7813 (fax)
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