N.F.Dymytriieva Calculation of stratified flows around a wedge using open software packages |
Applied hydromechanics, Vol. 17 (89) ¹ 2, (2015) |
| The problem on evolution of diffusion-driven flow on a wedge is solved. Due to breaking of naturally existing background diffusion flux of stratifying agent by impermeable surface of the wedge a complex multi-level vortex system of compensatory fluid motions is formed around the obstacle. The fundamental set is solved numerically in the full nonlinear formulation using finite volume method. The numerical solution is realized in original solvers of the open source package, OpenFOAM. Particular attention was paid to the creation of high-quality computational grid that takes into account multiscale task. The calculations are carried out in parallel based on a kind of domain decomposition method using the computational web-laboratory UniHUB with direct access to the JSCC cluster. The results of calculations show an intensive zone of pressure depression in front of the leading vertex of the wedge and pressure excess past the obstacle. The pressure gradient is responsible for generation of propulsive mechanism that results in a self-motion of the obstacle along its neutral buoyancy horizon. |
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KEY WORDS: numerical simulation, open software packages, stratified flows |
| TEXT LANGUAGE: Russian |