Abstract
Abstract In order to meet the requirement of flame stabilization and intensify the mixing, a new injection configuration, named double-effect injection configuration, is designed and that is the two secondary injections have been allocated with different functions to achieve the purpose of flame stabilization and intensifying mixing. The effects of the variation of secondary injections on flame stabilization, mixing and combustion performance were studied by using numerical simulation method. The conclusions are that by double-effect injection configuration, a stable recirculation zone can be formed in the cavity to stabilize the combustion flame, and the mixing effect can be intensified; and the temperature distributions at this combustor exit are more symmetric; and the influence of angle variation of secondary jet flow based on double-effect injection configuration is weaker, but it can be seen that model-1 (50° and 45° for two injection angle) has highest combustion efficiency and lowest total pressure losses.
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