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Crossing Turbulent Boundaries: Interfacial Flux in Environmental Flows

机译：越过湍流边界：环境流动中的界面通量

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摘要

Many processes of interest to environmental scientists and engineers are influenced by turbulent fluid motion at an interface.1'2 Textbooks often assume interfacial turbulence is isotropic and homogeneous, but flow visualization studies have long demonstrated the existence of organized "coherent structures" in the turbulence field that violate both assumptions.3"7 Coherent turbulent structures spawn highly chaotic "sweep and eject events" in which high velocity fluid sweeps down into the free stream turbulent boundary layer, and low velocity fluid at the interface is ejected into the bulk flow. The future challenge is to develop new theories and practical approaches for estimating interfacial transport rates that properly account for these coherent turbulent structures. The goal of this article is to provide an overview of recent advances in the study and characterization of turbulence at interfaces, and their implications for environmental science and engineering.
机译：环境科学家和工程师感兴趣的许多过程都受到界面处湍流运动的影响。1'2教科书通常假定界面湍流是各向同性和均质的，但是流动可视化研究长期以来证明了湍流中存在有组织的“相干结构” 3“ 7相干湍流结构产生了高度混乱的“扫掠和喷射事件”，其中高速流体向下冲入自由流湍流边界层，而界面处的低速流体则被喷射到总体流中。未来的挑战是开发新的理论和实用的方法来估计能适当解释这些相干湍流结构的界面传输速率，本文的目的是概述研究和表征界面湍流及其特性的最新进展。对环境科学与工程的意义。

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  • 来源
    《Environmental Science & Technology》 |2011年第17期|p.7107-7113|共7页
  • 作者

    Stanley B.Grant; Ivan Marusic;

  • 作者单位

    Department of Civil and Environmental Engineering, Henry Samueli School of Engineering, University of California, Irvine, California 92697, United States Department of Infrastructure Engineering, Melbourne School of Engineering, University of Melbourne, Victoria 3010, Australia;

    Department of Mechanical Engineering, Melbourne School of Engineering, University of Melbourne, Victoria 3010, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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