• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Numerical Simulation of a Low Emissions Gas Turbine Combustor Using KIVA-2
【24h】

Numerical Simulation of a Low Emissions Gas Turbine Combustor Using KIVA-2

机译：基于KIVa-2的低排放燃气轮机燃烧室数值模拟

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This is the second part of the numerical investigation on a low emissions staged turbine combustor (STC) using a modified version of the KIVA-2 code. The main focus of this study is the numerical analysis of the reacting fluid flow and heat transfer inside the quick-quench/lean-combustion (QQ/LC) zones. In the QQ zone, cool dilution air was injected into the hot mixture through eight 45 deg inclined slots with a momentum flux ratio of 60. The slot aspect ratio was 6 and the jet-to-mainstream mass flow rate ratio was 3. The inlet conditions of the QQ zone were obtained from the results of rich combustion zone analysis described in part 1. A tension spline interpolation scheme was then used to interpolate the necessary information needed at the inlet. Conditions at the slot opening (dilution jet) were chosen closely related to those encountered in advanced combustion systems. The Grid system needed for the numerical solutions was generated by a trans-finite interpolation scheme. KIVA-2 was further modified for the current study. Preliminary results illustrate some of the major features of the flow and temperature fields inside the QQ/LC zones. Formation of the co- and counter-rotating bulk flow and the sandwiched-ring-shape temperature field, typical of the confined inclined jet-in-cross flow, can be seen clearly and is consistent with experimental observations. The calculations of the mass-weighted standard deviation and the pattern factor of temperature revealed that the mixing performance of the STC combustor is very promising. The temperature of the fluid leaving the LC zone is very uniform. Prediction of the NO(x) emission index showed that there was no excessive thermal NO(x) produced in the QQ/LC zones for the case studied. From the results obtained so far, it appears that the modified KIVA-R code can be used to guide the low emission combustion experiments.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号