...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Mathematical Modelling >Numerical and laboratory prediction of smoke lofting in the atmosphere over large area fires
【24h】

Numerical and laboratory prediction of smoke lofting in the atmosphere over large area fires

机译：大面积火灾中大气中烟雾蔓延的数值和实验室预测

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

We analyze the lofting of aerosol in the atmosphere over a large scale fire. According to the well-known theory of "nuclear winter", soot, rising in the atmosphere, may spread in the stratosphere and screen sun rays, which may in turn result in long-term catastrophic consequences for the climate. The height reached by the soot is critical for the climate modeling because long-term global consequences can only be caused by a significant quantity of soot injected into the stratosphere. Most of the studies in the present literature are devoted to long-term modeling. The study of the initial (pyrocumulus) stage of the problem has attracted much less attention with the amount of the soot injected into the mid-latitude stratosphere often being postulated. The amount of smoke that enters the stratosphere is crucial for climate consequences. It is therefore important to predict accurately the active stage of a large-scale fire, which is accompanied by the development of convective columns. The paper is devoted to the analysis of different approaches to the prediction of the altitude of smoke lofting over large scale fires. Some numerical, laboratory and analytical methods are considered. The latter two approaches are based on the theory of similarity. The results obtained by different techniques are compared with each other. Special attention is given to high resolution simulations, which accurately enough resolve gravity waves.
机译：我们分析了大火中气溶胶在空气中的膨胀。根据众所周知的“核冬天”理论，烟尘在大气中上升，可能在平流层中扩散并遮挡阳光，这反过来可能对气候造成长期的灾难性后果。烟尘达到的高度对于气候模型至关重要，因为长期的全球后果只能由注入到平流层的大量烟尘引起。当前文献中的大多数研究都致力于长期建模。由于通常假定注入中纬度平流层的煤烟量很多，因此对该问题的初始（积烟）阶段的研究引起了较少的关注。进入平流层的烟雾量对气候后果至关重要。因此，重要的是准确预测大火的活动阶段，伴随着对流柱的发展。本文致力于分析不同方法来预测大规模火灾中烟气的高度。考虑了一些数值，实验室和分析方法。后两种方法基于相似性理论。将通过不同技术获得的结果相互比较。特别注意高分辨率模拟，该模拟可以足够精确地解析引力波。

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