Abstract:

Porous fence，which is an effective method to abate dust emission in a bulk material storage yard，has been used in many practical applications and aroused extensive attention in academic fields. In this paper，the current status and progress of porous fence are summarized，including mechanisms，progress of numerical simulation and several influence parameters on the shelter effect. Simultaneously，a porous fence with deflector，which plays a guiding role and directs the air flow up to a certain angle in order to reduce the direct impact on the windward surface of the bulk material pile is introduced，the shelter effect of the new porous fence is investigated numerically. The present imperfection and direction of future research are also discussed.

摘要：

防风抑尘网作为一种能有效控制散堆料场起尘与扩散的手段，近年来得以推广，并得到学术界的关注。本文综述了国内外防风抑尘网的研究现状和进展。着重从作用机理、防风效应的影响因素、数值模拟进展及防风网的应用等方面对防风网进行了总结评述；同时介绍了一种新型防风网——导流型防风网，即在常规平板型防风网网孔上增设导流翅片，使来流风绕过料堆产生上扬以减小其对料堆的直接作用力，并借助数值模拟手段对新型防风网的抑尘性能进行了研究；最后对防风网目前存在的不足和未来的研究方向进行了探讨。