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Computation of large-scale statistics in decaying isotropic turbulence
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Chasnov, Jeffrey R. |
| Copyright Year | 1993 |
| Description | We have performed large-eddy simulations of decaying isotropic turbulence to test the prediction of self-similar decay of the energy spectrum and to compute the decay exponents of the kinetic energy. In general, good agreement between the simulation results and the assumption of self-similarity were obtained. However, the statistics of the simulations were insufficient to compute the value of gamma which corrects the decay exponent when the spectrum follows a k(exp 4) wave number behavior near k = 0. To obtain good statistics, it was found necessary to average over a large ensemble of turbulent flows. |
| File Size | 314232 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940019694 |
| Archival Resource Key | ark:/13960/t42r8rg0h |
| Language | English |
| Publisher Date | 1993-12-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer High Reynolds Number Temporal Distribution Turbulent Flow Statistical Analysis Computational Fluid Dynamics Energy Spectra Eddy Viscosity Decay Rates Time Dependence Vortices Turbulence Models Isotropic Turbulence Kinetic Energy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
