摘要
气-液-固三相反应器广泛的应用于工业生产的诸多领域,因此对该系统中气-液-固三相流动行为的研究具有重要的意义。随着计算机技术的高速发展而兴起的数值模拟计算日益成为研究此类问题的重要途径。本文系统的对近几十年来数值模拟在该领域的发展进行了综述。首先依据模拟尺度的不同,阐述了当前的主要模拟手段:欧拉法、拉格朗日法和直接数值模拟法。接着分别对这三类方法展开了详细的介绍,指出欧拉法与拉格朗日法都能开展工业级计算,但精度依赖于本构方程;直接数值模拟法能够捕捉局部界面变化细节,但需要十分精细的网格。最后本文对该领域的研究前景进行了展望。
Gas-liquid-solid three-phase reactors are wildly used in many fields of commercial run, thus it is important to research the behavior of gas-liquid-solid three-phase flows. Numerical simulation has been playing a vital role in the research of such problem due to the high-speed development of computer technology. The progresses in this field by using numerical simulation method are reviewed systematically for the last several decades. At first, the current main simulation approaches （Eulerian method, Lagrangian method and DNS method） are introduced according to the simulation scale. Then these three methods are explained in detail respectively. It was found that both Eulerian method and Lagrangian method can be used for industry scale simulation, but the accuracy is highly relied on their constitutive equations; the local interface variation can be captured by DNS method, but fine grids are in need. In the end of this paper, the future development is also given.
出处
《广东化工》
CAS
2017年第3期91-92,112,共3页
Guangdong Chemical Industry
