Novosibirsk, Russia, May, 30 – June, 4, 2011

International Conference
"Modern Problems of Applied Mathematics and Mechanics: Theory, Experiment and Applications", devoted to the 90th anniversary of professor Nikolai N. Yanenko

Beneš L.   Furst J.   Bodnar T.  

Numerical modeling of the generation of waves behind the obstacles in stratified fluid

Reporter: Beneš L.

     The article is devoted to numerical simulation of stratified flows described by the Navier-Stokes equations in Boussinesq approximation. The equations are solved by three high order schemes. The first one using the fifth-order WENO scheme combined with spectral projection to solenoidal field, the second one being based on the second order AUSM MUSCL scheme with artificial compressibility in dual time and third one is based on high order compact finite-difference semidiscretization.
      The schemes are used to model proces of wave generation in two cases. The first one is a flow around an obstacle moving through the stratified fluid. The setup of the computational case corresponds to the experiment. The second one is the flow of stably stratified fluid over low, smooth hill. Mutual comparison of results obtained by both schemes as well as of the experimental data is presented.

Full text file: novosibirsk_11.pdf

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