【24h】

Validation of Novel Low-Temperature Fire Event Modelling Technique

机译:新型低温火灾事件建模技术的验证

获取原文

摘要

This paper documents the experimental, analytical and numerical approach used i nthe low-termperature fire certification techniqu. The Propane-air burner flame is simulated at low temperature using a mixture of Helium and air with mixture ratio, flow rates and scale chosen to achieve correct matching of the relevant non-dimensional groups: Reynolds number, Prandtl number, Froude number, density ratio and momentum flux ratio. Froude number, density ratio and momentum flux ratio. The effects of mixing between the burner plume and the surrounding ambient air are also accounted for. Extensive measurements in both the standard burner plume and the analogue burner plume are used to assess the simulation. Calibration of the half-scale low-termperature analogue burner via heat flux measurements indicates accurate reproduction of the hot flow from the standard fire-test burner. Full validation of the technique is demonstrated by its ability to reproduce the measured component metal temperatures from an actual fire test.
机译:本文记录了在低温防火认证技术中使用的实验,分析和数值方法。在低温下使用氦气和空气的混合物模拟丙烷空气燃烧器火焰,并选择混合比,流量和比例来实现相关无量纲的正确匹配:雷诺数,普朗特数,弗洛德数,密度比和动量通量比。弗洛德数,密度比和动量通量比。还考虑了燃烧器羽流与周围环境空气之间混合的影响。标准燃烧器羽流和模拟燃烧器羽流中的大量测量都用于评估模拟。通过热通量测量对半标度的低温模拟燃烧器进行校准表明,可以精确再现标准燃烧试验燃烧器产生的热流。该技术可以从实际的燃烧测试中复制出所测量的部件金属温度,从而证明了该技术的充分验证。

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