Re: [deal.II] Lagrange multipliers

2017-08-10 Thread Wolfgang Bangerth

On 08/08/2017 11:16 AM, neverwoke wrote:
Hello all. I am very new to the community but very eager to learn. I am wonder 
if there is an out-of-the-box support for using Lagrange multipliers on a 
boundary, to enforce rigid body motion in Stokes flow, similar to the work of 
Glowinski [1] or Hwang [2]?


I'm not aware of a program that is available publicly that would do this 
already, but such methods have definitely been implemented. You could, for 
example, take a look at some of the papers by Angelo Frisani on this.


So the question is what you mean by "out of the box". It's possible, but it'll 
require work like any other advanced numerical method.


Best
 W.


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Wolfgang Bangerth  email: bange...@colostate.edu
   www: http://www.math.colostate.edu/~bangerth/

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[deal.II] Lagrange multipliers

2017-08-08 Thread neverwoke
Hello all. I am very new to the community but very eager to learn. I am 
wonder if there is an out-of-the-box support for using Lagrange multipliers 
on a boundary, to enforce rigid body motion in Stokes flow, similar to the 
work of Glowinski [1] or Hwang [2]?

[1] Glowinski, R., Pan, T. W., Hesla, T. I., Joseph, D. D., & Periaux, J. 
(2001). A fictitious domain approach to the direct numerical simulation of 
incompressible viscous flow past moving rigid bodies: application to 
particulate flow. *Journal of Computational Physics*, *169*(2), 363-426.
[2] Hwang, W. R., Hulsen, M. A., & Meijer, H. E. (2004). Direct simulation 
of particle suspensions in sliding bi-periodic frames. *Journal of 
Computational Physics*, *194*(2), 742-772.

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