INVERSE MODELING FOR LARGE-EDDY SIMULATION

Approximate higher order polynomial inversion of the top-hat filter is developed with which the turbulent stress tensor in large-eddy simula tion can be consistently represented using the filtered field. General ized (mixed) similarity models are proposed which improved the agreeme nt with the kinetic energy transfer to small scales. These similarity models are analyzed for random periodic signals and the ensemble avera ged spectra of the turbulent stress tensor and the corresponding model s are compared. (C) 1997 American Institute of Physics. [S1070-6631(97 )02712-8].