Numerical investigation of a burner twist parameter effect on thermogas dynamic processes in boilers BKZ74207140
| Autor: | A. V. Gil, A. S. Zavorin, A. V. Starchenko, S. V. Obukhov |
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| Jazyk: | ruština |
| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Известия Томского политехнического университета: Инжиниринг георесурсов, Vol 323, Iss 4 (2009) |
| Druh dokumentu: | article |
| ISSN: | 2500-1019 2413-1830 |
| Popis: | Based on numerical study the authors have analyzed thermogas dynamic processes in BKZ-420-140 combustion chamber at different twist parameters of fuel-air mixture and secondary air. The authors used the Euler-Lagrange aerothermochemistry way to describe processes in gas-dispersed environments; gas turbulent characteristics are calculated using a two-parameter "k-e" turbulence model considering moving particles effect. The paper introduces graphic results in different sections of flames spread across the combustion chamber width showing flame formation structure with dispersed phase, its ignition and combustion. The authors analyzed twist parameter effect on formation of internal and external recirculation zones and their thermal action on twisting torch boundaries. The effective values of the twist parameter for burning high-ash Ekibastuz coals were obtained. |
| Databáze: | Directory of Open Access Journals |
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