Characterization of GO2–GH2 Simulations of a Miniature Vortex Combustion Cold-Wall Chamber
| Autor: | Martin J. Chiaverini, Joseph Majdalani |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Finite volume method Computer simulation business.industry 020209 energy Mechanical Engineering Nozzle Aerospace Engineering 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Chamber pressure Adiabatic flame temperature Vortex Fuel Technology Space and Planetary Science Incompressible flow 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Compressibility Aerospace engineering business |
| Zdroj: | Journal of Propulsion and Power. 33:387-397 |
| ISSN: | 1533-3876 0748-4658 |
| DOI: | 10.2514/1.b36277 |
| Popis: | This study describes a numerical simulation of a miniature vortex combustion cold-wall chamber using a two-stage choked nozzle approach. Recognizing that the nozzle is choked at the throat under normal operation, the miniaturized vortex chamber is decomposed into two parts: The first segment extends from the headwall to the throat, whereas the second extends from the throat to the nozzle exit plane. In stage 1, an incompressible model is used leading up to the nozzle entrance. In stage 2, compressibility is superimposed, starting with the output from stage 1. This two-stage simulation reduces CPU time and helps to achieve convergence. Compressible simulations are then performed using a three-dimensional pressure-based, finite volume, unstructured solver. Furthermore, reaction mechanisms are simulated using a non-premixed combustion model with adiabatic probability density function lookup tables. Eight conventional chemical species are used, including O2, H2, H2O, HO2, H2O2, O, H, and OH. At the outset, th... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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