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NUMERICAL MODELLING OF THE FLOW PATTERNS INDUCED BY A PUSH-PULL VENTILATION SYSTEM

机译:推拉通风系统引起的流动模式的数值模拟

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摘要

Open surface tanks used in industrial processes often need ventilating to remove harmful pollutants from the working environment. One method which can be used is the so-called push-pull ventilation system, in which a jet of air is blown (or pushed) from one side of the tank and collected (or pulled) by an exhaust hood on the opposite parallel side. Such systems can reduce the ventilation air flow requirements by up to 50%. In order to be able subsequently to examine the movement of pollutant around the system, we first need to understand the fluid flow patterns which are generated, and these are examined in this paper. The system is modelled using a commercial computational fluid dynamics package and the results compare favourably with the available experimental data. The geometry of the situation can lead to excessive computational time and so appropriate approximations to reduce the CPU time and simplify the problem are introduced and evaluated.
机译:工业过程中使用的露天水箱经常需要通风以从工作环境中去除有害污染物。可以使用的一种方法是所谓的推拉通风系统,其中从储罐的一侧吹(或推动)空气射流,并通过相对的平行侧上的排气罩收集(或拉出)空气。这样的系统最多可以减少50%的通风气流需求。为了随后能够检查污染物在系统中的运动,我们首先需要了解所产生的流体流型,并在本文中进行了研究。该系统使用商业计算流体动力学软件包进行建模,结果与可用的实验数据相比具有优势。这种情况的几何形状可能导致过多的计算时间,因此引入并评估了适当的近似值,以减少CPU时间并简化问题。

著录项

  • 来源
    《The Annals of Occupational Hygiene》 |1996年第3期|p.293-310|共18页
  • 作者

    M. Robinson; D. B. Ingham;

  • 作者单位

    Department of Applied Mathematical Studies, University of Leeds, Leeds LS2 9JT, U.K.;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 劳动卫生;
  • 关键词

  • 入库时间 2022-08-18 00:23:54

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