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Simulations of diffusion-reaction equations with implications to turbulent combustion modeling
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Girimaji, Sharath S. |
| Copyright Year | 1993 |
| Description | An enhanced diffusion-reaction reaction system (DRS) is proposed as a statistical model for the evolution of multiple scalars undergoing mixing and reaction in an isotropic turbulence field. The DRS model is close enough to the scalar equations in a reacting flow that other statistical models of turbulent mixing that decouple the velocity field from scalar mixing and reaction (e.g. mapping closure model, assumed-pdf models) cannot distinguish the model equations from the original equations. Numerical simulations of DRS are performed for three scalars evolving from non-premixed initial conditions. A simple one-step reversible reaction is considered. The data from the simulations are used (1) to study the effect of chemical conversion on the evolution of scalar statistics, and (2) to evaluate other models (mapping-closure model, assumed multivariate beta-pdf model). |
| File Size | 1438713 |
| Page Count | 50 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940017388 |
| Archival Resource Key | ark:/13960/t7tn24r8v |
| Language | English |
| Publisher Date | 1993-09-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Combustion Chemistry Reacting Flow Reaction Kinetics Mathematical Models Isotropic Turbulence Computerized Simulation Chemical Evolution Velocity Distribution Turbulent Combustion Turbulent Diffusion 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 |
