Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Modelling and analysis of semi experimental hybrid method for Prediction of lean blowout in turbine

Author
Abstract
In this study, a novel method for prediction of lean blowout in turbine engines based on combination of numerical simulation and semi-empirical relations has been presented. In recent years empirical tests have shown that in addition to the parameters used in Lefebvre’s relation, two parameters of flame volume and fraction of dome air have a major impact on lean blowout. These two parameters have been obtained from numerical simulation for a special combustion chamber by using fluent software. Two ways was presented to calculate these parameters which is in first method, fuel was used in gas form and in the second method in liquid form. Finally, these two parameters were placed in a semi-empirical correlation and provide a novel combine method. The error of first and second combine method were obtained respectively 6.15 and 2.2 percent. Finally, these two parameters were placed in a semi-empirical correlation and provide a novel combine method. The error of first and second combine method were obtained respectively 6.15 and 2.2 percent.
Keywords

Subjects


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Volume 18, Issue 4 - Serial Number 45
Fluid Mechanics and Heat Transfer
Winter 2017
Pages 72-95

  • Receive Date 19 June 2016
  • Revise Date 13 January 2017
  • Accept Date 01 June 2017