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Analysis and modeling of subgrid scalar mixing using numerical data
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Zhou, YE Girimaji, Sharath S. |
| Copyright Year | 1995 |
| Description | Direct numerical simulations (DNS) of passive scalar mixing in isotropic turbulence is used to study, analyze and, subsequently, model the role of small (subgrid) scales in the mixing process. In particular, we attempt to model the dissipation of the large scale (supergrid) scalar fluctuations caused by the subgrid scales by decomposing it into two parts: (1) the effect due to the interaction among the subgrid scales; and (2) the effect due to interaction between the supergrid and the subgrid scales. Model comparisons with DNS data show good agreement. This model is expected to be useful in the large eddy simulations of scalar mixing and reaction. |
| File Size | 1105664 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950025557 |
| Archival Resource Key | ark:/13960/t70w3dm2t |
| Language | English |
| Publisher Date | 1995-05-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer High Reynolds Number Turbulent Flow Computational Fluid Dynamics Simulation Reacting Flow Turbulence Models Vortices Dissipation Scalars Isotropic Turbulence Computational Grids Turbulent Mixing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
