...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Building and Environment >Isothermal and non-isothermal flow in street canyons: A review from theoretical, experimental and numerical perspectives
【24h】

Isothermal and non-isothermal flow in street canyons: A review from theoretical, experimental and numerical perspectives

机译：在街道峡谷中的等温和非等温流量：从理论，实验和数值观点来看

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

Urban street canyon flows play a central role in microclimate control, from street canyon to neighbourhood and city scale, which affect pollutant dispersion, thermal comfort of residents and building energy consumption for various indoor and outdoor flow conditioning systems. Extensive studies have been devoted to this field, from theoretical modelling to experimental measurements and numerical simulations. While some important characteristics of street canyon flows, such as the presence of a primary standing vortex and the mechanism for its establishment, have been well revealed, a holistic understanding consolidating theoretical, experimental and numerical research has not been achieved. This review is therefore aimed to holistically articulate these approaches and research outcomes in the field. Some critical points overlooked in the literature are identified and commented on. These are: distinguishing gradient and bulk Richardson numbers; identifying dominant similarity characteristic numbers for scaling down models; predicting the condition in which thermal effects come into play; modelling the convective heat transfer in non-equilibrium mixed convection conditions using wall functions; and exploring the influence of neutral and non-neutral urban boundary layers on street canyon flows and associated passive scalar dispersion. The review is concluded with an outlook to most challenging research questions towards understanding of microclimate of full-scale realistic street canyons.
机译：城市街道峡谷流动在微气候控制中起着核心作用，从街道峡谷到社区和城市规模，影响污染物分散，居民热舒适度和各种室外流量调理系统的能耗。从实验测量和数值模拟的理论模型中，广泛的研究已经致力于该领域。虽然街道峡谷流动的一些重要特征，例如主要站立涡流的存在以及其建立机制，但已经很好地揭示了整体理解，并未实现整合理论，实验和数值研究。因此，本综述旨在全能地清楚地清楚这些方法和研究结果。确定并评论了文献中忽视的一些关键点。这些是：区分梯度和散装理查森数字;识别缩放模型的主导相似性特征数字;预测热效应发挥作用的条件;使用壁函数建模非平衡混合对流条件中的对流传热;并探索中性和非中性城市边界层对街道峡谷流动的影响及相关无源标量校长。审查是在对全规模现实街道峡谷微气门的理解中的最具挑战性的研究问题的审查。

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