• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Combustion Science and Technology >COMPUTED FLAMMABILITY LIMITS AND SPREADING RATES OF UPWARD FLAME SPREAD OVER A THIN SOLID IN LOW-SPEED BUOYANT FLOWS
【24h】

COMPUTED FLAMMABILITY LIMITS AND SPREADING RATES OF UPWARD FLAME SPREAD OVER A THIN SOLID IN LOW-SPEED BUOYANT FLOWS

机译：低速浮力流中薄固体上的易燃极限和向上火焰蔓延速率的计算

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Upward flame spread over a thin solid in low-speed buoyant flows was studied numerically with a previous established two-dimensional model. In natural convective environments, steady flame spreading was achieved in partial gravity and reduced pressure. The effects of environmental parameters, including gravity level, ambient pressure, and oxygen percentage, on flame structures, flame spread rates, and flammability limits were investigated, especially for the pressure effects, as it was not previously examined in detail. At reduced pressure, flame is shorter but thicker. Flame length and upward flame spread rates increased with pressure to a power larger than unity. The spreading rates also increased linearly with gravity, with a slope depending on pressure. The extinction boundary using pressure and gravity level as coordinates were constructed and compared with limited available experimental results for the buoyant, reduced pressure flames.
机译：使用先前建立的二维模型，数值研究了低速浮力流中稀薄固体上的向上火焰蔓延。在自然对流环境中，在部分重力和减压下实现了稳定的火焰蔓延。研究了环境参数（包括重力水平，环境压力和氧气百分比）对火焰结构，火焰蔓延速率和可燃性极限的影响，尤其是对于压力影响，因为以前没有对其进行详细检查。在减压下，火焰更短但更浓。火焰长度和向上火焰蔓延速率随着压力的增加而增加，大于1的幂。铺展速率也随重力线性增加，其斜率取决于压力。构造了以压力和重力水平为坐标的消光边界，并将其与浮力下降的低压火焰的有限实验结果进行了比较。

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