000021411 001__ 21411
000021411 005__ 20170522124353.0
000021411 04107 $$aeng
000021411 046__ $$k2017-05-15
000021411 100__ $$aPlánička, S.
000021411 24500 $$aNUMERICAL SIMULATIONS OF FREE SURFACE FLOWS USING A THREE-EQUATION MODEL

000021411 24630 $$n23.$$pEngineering Mechanics 2017
000021411 260__ $$bBrno University of Technology, Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno
000021411 506__ $$arestricted
000021411 520__ $$2eng$$aNumerical results obtained from the application of a three-equation model for free surface flows are presented in the paper. The compressible two-phase flow model is suitable for complex free surface flow simulations that can, for example, include breaking waves. Compared to commonly used shallow water models, the model described in the paper offers certain advantages and wider applicability as it can deal with problems associated with complex interfaces. On the other hand, it should be noted that the model describes only flow field of one phase and the solution of pressure field is significantly simplified. Derived from the seven-equation Baer-Nunziato model and completed with the Tait equation of state, it consists of mass and momentum evolution equations in conservative form and of an advection equation for volume fraction in non-conservative form. A numerical code based on the finite volume method was developed, in which the inviscid numerical flux is approximated by an AUSM scheme. For spatial discretization of the nonconservative term contained in the model, an AUSM-based scheme is applied. The developed algorithm was successfully verified by a well-known dambreak test and further a bubble ascension problem was solved.

000021411 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021411 653__ $$aFree surface flow, Three-equation model, AUSM scheme, Finite volume method.

000021411 7112_ $$aEngineering Mechanics 2017$$cSvratka, CZ$$d2017-05-15 / 2017-05-18$$gEM2017
000021411 720__ $$aPlánička, S.$$iVimmr, J.
000021411 8560_ $$ffischerc@itam.cas.cz
000021411 8564_ $$s877538$$uhttps://invenio.itam.cas.cz/record/21411/files/0786.pdf$$yOriginal version of the author's contribution in proceedings, page 786, section FLU.
000021411 962__ $$r21225
000021411 980__ $$aPAPER