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- W2099109430 abstract "To investigate the behavior of the concentrationof a passive scalar in a turbulent flow with realistichigh Schmidt numbers, one needs a very fine grid tocapture all length-scales that are present in theconcentration. An efficient method to increase thespatial resolution without a drastic raise of thecomputational costs is to apply a Local DefectCorrection method. To compute the turbulentvelocity field, a Direct Numerical Simulation isused that consists of a pseudo-spectral method intwo periodic directions and a Chebyshev expansionin the wall-normal direction. The concentrationequation for the passive scalar is solved using afinite volume method. The main concern with anLDC method in a hyperbolic time-dependentproblem is the interpolation of the concentrationwhen the refinement area is moved. Theinterpolated solution has to be smooth andcontinuous to ensure numerical stability. Resultsshow that with Local Defect Correction it ispossible to accurately compute the development ofthe concentration of a passive scalar in turbulentflow." @default.
- W2099109430 created "2016-06-24" @default.
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- W2099109430 date "2006-01-01" @default.
- W2099109430 modified "2023-09-27" @default.
- W2099109430 title "Application of local defect correction to a time dependent problem" @default.
- W2099109430 hasPublicationYear "2006" @default.
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