The Role of Continuity in Residual-Based Variational Multiscale Modeling of Turbulence
Author | : |
Publisher | : |
Total Pages | : 19 |
Release | : 2007 |
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This paper examines the role of continuity of the basis in the computation of turbulent flows. We compare standard finite elements and NURBS (non-uniform rational B-splines) discretizations that are employed in Isogeometric Analysis. We make use of quadratic discretizations that are C0-continuous across element boundaries in standard finite elements, and C1-continuous in the case of NURBS. The variational multiscale residual-based method is employed as a turbulence modeling technique. We find that C1-continuous discretizations outperform their C0-continuous counterparts on a per-degree-of- freedom basis. We also find that the effect of continuity is greater for higher Reynolds number flows.