The Numerical Decomposition of Turbulent Fluctuations in a Compressible Boundary Layer Export

@article{citeulike:4369300, abstract = {Abstract. \ \ In many flows the turbulence is weakly compressible even at large Mach number. For example, in a compressible boundary layer Ma\<5, the differences relative to an incompressible boundary layer understood as being caused by density variations that accompany variations temperature across the layer. Turbulent fluctuations in a boundary layer are therefore expected to be dominated by the effects nonconstant temperature, and low Mach number theories in which fluctuations are not dominant should be applicable to the fluctuating field. However, the analysis of compressible boundary layer DNS data reveals presence of significant acoustic fluctuations. To distinguish acoustic and thermal effects, a numerical decomposition procedure compressible boundary layer fluctuations is applied to determine the and nonacoustic fluctuations. Except for very near the wall, where decomposition procedure is not valid, it is found that the fluctuations are only weakly coupled to the acoustic fluctuations at numbers as high as 6.}, author = {Borodai, Stanislav G. and Moser, Robert D.}, citeulike-article-id = {4369300}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/s001620100041}, citeulike-linkout-1 = {http://www.springerlink.com/content/e64703myu9npf6px}, day = {18}, doi = {10.1007/s001620100041}, journal = {Theoretical and Computational Fluid Dynamics}, keywords = {381paper}, month = {September}, number = {1}, pages = {35--63}, posted-at = {2009-04-20 16:32:32}, priority = {2}, title = {The Numerical Decomposition of Turbulent Fluctuations in a Compressible Boundary Layer}, url = {http://dx.doi.org/10.1007/s001620100041}, volume = {15}, year = {2001} }

TY - JOUR ID - citeulike:4369300 L3 - citeulike-article-id:4369300 N2 - Abstract.   In many flows the turbulence is weakly compressible even at large Mach number. For example, in a compressible boundary layer Ma<5, the differences relative to an incompressible boundary layer understood as being caused by density variations that accompany variations temperature across the layer. Turbulent fluctuations in a boundary layer are therefore expected to be dominated by the effects nonconstant temperature, and low Mach number theories in which fluctuations are not dominant should be applicable to the fluctuating field. However, the analysis of compressible boundary layer DNS data reveals presence of significant acoustic fluctuations. To distinguish acoustic and thermal effects, a numerical decomposition procedure compressible boundary layer fluctuations is applied to determine the and nonacoustic fluctuations. Except for very near the wall, where decomposition procedure is not valid, it is found that the fluctuations are only weakly coupled to the acoustic fluctuations at numbers as high as 6. IS - 1 JF - Theoretical and Computational Fluid Dynamics EP - 63 TI - The Numerical Decomposition of Turbulent Fluctuations in a Compressible Boundary Layer VL - 15 SP - 35 KW - 381paper AU - Borodai, Stanislav AU - Moser, Robert PY - 2001/09/18/ UR - http://dx.doi.org/10.1007/s001620100041 ER -