A high-order projection method for tracking fluid interfaces in variable density incompressible flows
- Univ. of California, Davis, CA (United States)
- Lawrence Berkeley National Lab., CA (United States); and others
We present a numerical method for computing solutions of the incompressible Euler or Navier-Stokes equations when a principal feature of the flow is the presence of an interface between two fluids with different fluid properties. The method is based on a second-order projection method for variable density flows using an {open_quotes}approximate projection{close_quotes} formulation. The boundary between the fluids is tracked with a second-order, volume-of-fluid interface tracking algorithm. We present results for viscious Rayleigh-Taylor problems at early time with equal and unequal viscosities to demonstrate the convergence of the algorithm. We also present computational results for the Rayleigh-Taylor instability in air-helium and for bubbles and drops in an air-water system without surface tension to demonstrate the behavior of the algorithm on problems with large density and viscosity contrasts. 64 refs., 5 figs.
- OSTI ID:
- 530796
- Journal Information:
- Journal of Computational Physics, Vol. 130, Issue 2; Other Information: PBD: 15 Jan 1997
- Country of Publication:
- United States
- Language:
- English
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