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    Arbitrary Steady-State Solutions with the K-epsilon Model (2006)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Widely-used forms of the K-epsilon turbulence model are shown to yield arbitrary steady-state converged solutions that are highly dependent on numerical considerations such as initial conditions and solution procedure. These solutions contain pseudo-laminar regions of varying size. By applying a nullcline analysis to the equation set, it is possible to clearly demonstrate the reasons for the anomalous behavior. In summary, the degenerate solution acts as a stable fixed point under certain conditions, causing the numerical method to converge there. The analysis also suggests a methodology for preventing the anomalous behavior in steady-state computations.
    Keywords: Numerical Analysis
    Type: AIAA Journal; 44; 7; 1586-1592
    Format: application/pdf
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