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Details van artikel 237 van 243 gevonden artikelen
| Titel: |
Validation of an Aerothermochemical Model for Graphite Nozzle Recession and Heat-Transfer Processes |
| Auteur: |
Keswani, S. T. Kuo, K. K. |
| Verschenen in: |
Combustion science and technology |
| Paginering: | Jaargang 47 (1986) nr. 3-4 pagina's 177-192 |
| Jaar: |
1986-06-01 |
| Inhoud: |
-An aerothermochemical model for graphite nozzle recession and heat-transfer processes in solid-propellant rocket motors has been developed. The model considers the turbulent boundary-layer flow in the nozzle, heterogeneous reactions at the nozzle surface, and transient heat-conduction processes in the nozzle material. Mass transfer across the highly-accelerated turbulent boundary layer shows only a weak dependence on the Schmidt number of the diffusing species. Both frozen and chemical equilibrium boundary-layer assumptions were considered. H2O is found to be the dominant oxidizing species, with CO2 being of secondary importance. Concentration profiles of H2O across the boundary layer are not significantly affected by gas-phase reactions, implying that the graphite recession process is relatively independent of gas-phase reactions. The model has been verified with experimental data. Good agreement has been obtained for both recession and temperature measurements. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 237 van 243 gevonden artikelen
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