Numerical Simulation of 3D Multi-fluid Flows

A Numerical Method for the Simulation of Free Surface Flows of Viscoplastic Fluid in 3d

In this paper we study a numerical method for the simulation of free surface flows of viscoplastic (Herschel-Bulkley) fluids. The approach is based on the level set method for capturing the free surface evolution and on locally refined and dynamically adapted octree cartesian staggered grids for the discretization of fluid and level set equations. A regularized model is applied to handle the no...

3D numerical simulation of gaseous flows structure in semidetached binaries

The results of numerical simulation of mass transfer in semidetached non-magnetic binaries are presented. We investigate the morphology of gaseous flows on the base of three-dimensional hydrodynamic calculations in interacting binaries of different types (cataclysmic variables and low-mass X-ray binaries). We find that taking into account of a circumbinary envelope leads to significant changes ...

Numerical simulation of 3D viscoelastic flows with free surfaces

Integrated Multi-aspect Visualization of 3D Fluid Flows

The motion of a fluid is affected by several intertwined flow aspects. Analyzing one aspect at a time can only yield partial information about the flow behavior. More details can be revealed by studying their interactions. Our approach enables the investigation of these interactions by simultaneously visualizing meaningful flow aspects, such as swirling motion and shear strain. We adopt the not...

Physical Mathematics Seminar Direct Numerical Simulation of Multi-Component Flows

We report the development of a sharp interface/level set method for the Direct Numerical Simulation (DNS) of multi-component flows. Special care has been taken to treat problems involving high-density ratios and large surface tension forces in an accurate and computationally efficient manner. Calculations are presented for 2D waves falling down a vertical wall, wherein good agreement is found w...