%0 Journal Article %1 KNOBLOCH1992 %A KNOBLOCH, E. %A MERRYFIELD, W. J. %D 1992 %J ASTROPHYSICAL JOURNAL %K FLUX-CORRECTED SHEAR TRANSPORT; %N 1 %P 196--205 %T ENHANCEMENT OF DIFFUSIVE TRANSPORT IN OSCILLATORY FLOWS %V 401 %X The theory of transport of passive scalars in oscillatory flows is reexamined. The differences between transport in standing and traveling waves are emphasized. Both Lagrangian and Eulerian diffusivities are calculated, and the conditions for their applicability are discussed. Numerical simulations are conducted to understand the expulsion of gradients from time-dependent eddies and the resulting transport. The results indicate that it is the Eulerian diffusivity that is of primary relevance for describing enhanced transport on spatial scales larger than that of the eddies.

@article{KNOBLOCH1992, abstract = {The theory of transport of passive scalars in oscillatory flows is reexamined. The differences between transport in standing and traveling waves are emphasized. Both Lagrangian and Eulerian diffusivities are calculated, and the conditions for their applicability are discussed. Numerical simulations are conducted to understand the expulsion of gradients from time-dependent eddies and the resulting transport. The results indicate that it is the Eulerian diffusivity that is of primary relevance for describing enhanced transport on spatial scales larger than that of the eddies.}, added-at = {2009-11-03T20:21:25.000+0100}, author = {KNOBLOCH, E. and MERRYFIELD, W. J.}, biburl = {https://www.bibsonomy.org/bibtex/269d8328ac83ab714e8a04322d868c71e/svance}, citedreferences = {ARIS R, 1956, P ROY SOC LOND A MAT, V235, P67 ; BORIS JP, 1973, J COMPUT PHYS, V11, P38 ; DUBRULLE B, 1991, PHYS REV A, V43, P255 ; FRISCH U, 1988, LECTURE NOTES TURBUL, P234 ; JORDAN DW, 1979, NONLINEAR ORDINARY D ; KNOBLOCH E, 1987, INTERNAL SOLAR ANGUL, P221 ; KNOBLOCH E, 1991, LECT NOTES HELIOSEIS, V388, P241 ; LIGHTHILL MJ, 1978, WAVES FLUIDS ; MCCARTY P, 1988, PHYS REV A, V37, P2112 ; MERRYFIELD WJ, 1991, LECTURE NOTES PHYSIC, V388, P247 ; MOFFATT HK, 1983, REP PROG PHYS, V46, P621 ; PAPANICOLAOU GC, 1981, STOCHASTIC NONLINEAR, P36 ; PARKER EN, 1963, APJ, V138, P552 ; PRESS WH, 1981, APJ, V248, P751 ; RHINES PB, 1983, J FLUID MECH, V133, P133 ; ROSENBLUTH MN, 1987, PHYS FLUIDS, V30, P2636 ; SHRAIMAN BI, 1987, PHYS REV A, V36, P261 ; TAYLOR GI, 1921, P LOND MATH SOC, V20, P196 ; WEISS NO, 1966, P ROY SOC LOND A MAT, V293, P310 ; YOUNG WR, 1982, J PHYS OCEANOGR, V12, P515 ; ZALESAK ST, 1979, J COMPUT PHYS, V31, P335}, interhash = {efa9fdf2395fbb4dacf45b939d396610}, intrahash = {69d8328ac83ab714e8a04322d868c71e}, journal = {ASTROPHYSICAL JOURNAL}, keywords = {FLUX-CORRECTED SHEAR TRANSPORT;}, number = 1, owner = {svance}, pages = {196--205}, timestamp = {2009-11-03T20:21:54.000+0100}, title = {ENHANCEMENT OF DIFFUSIVE TRANSPORT IN OSCILLATORY FLOWS}, volume = 401, year = 1992 }