Finite-difference method of incompressible flows with rotation and moving boundary in a nonstaggered grid
- Univ. of Bremen (Germany). Center of Applied Space Technology and Microgravity
In this article a finite-difference solution method for simulating incompressible two-dimensional and axisymmetric flow problems with rotation and moving boundary is developed. In this method conservative governing equations are approximated by a vertex-based control-volume discretization in a nonstaggered grid. The solutions for velocity field and pressure are coupled in a similar manner to the SIMPLE family. Moving boundaries are solved step by step from the kinematic boundary condition, and the changing flow domain is fitted by a curvilinear coordinate system with updated grid. To avoid unrealistic distributions of velocity components and pressure, the Rhie-Chow interpolation is employed and the boundary value of pressure on solid surfaces is determined from the local mass conservation. The validation is carried out in simulating two-dimensional lid-driven square cavity flows and rotating coaxial disk flows with and without free surfaces.
- OSTI ID:
- 6840589
- Journal Information:
- Numerical Heat Transfer. Part B, Fundamentals; (United States), Vol. 26:2; ISSN 1040-7790
- Country of Publication:
- United States
- Language:
- English
Similar Records
A non-staggered grid, fractional step method for time-dependent incompressible Navier-Stokes equations in curvilinear coordinates
Nonstaggered calculation of laminar and turbulent flows using curvilinear nonorthogonal coordinates