摘要
本文评述了计算流体力学在化学化工研究和开发中的重要地位,介绍了各种模拟方法研究的现状、存在的困难和一些发展中的前沿领域。与传统应用领域相比,化学工程领域主要面对的是复杂多相流体系统及流动、传递和反应相耦合的过程,基于单尺度统计平均的传统连续介质方法已很难满足对产品结构和过程工艺精确设计的要求,而多尺度方法与粒子方法的结合是一条有效的途径。它通过对复杂系统满足的稳定性条件的分析以及对复杂界面和间断性的合理描述实现跨尺度关联的模拟,从而量化介观结构与行为、建立准确的宏观模型。这种结合无论是对湍流、汽液或气固多相流等传统的难题,还是对微流动、生物流、聚合物流动、颗粒流及散料力学等前沿领域,都带来了新的可能性,也将为化学化工领域的研发工作提供更有力的手段。
This paper reviews the importance of computational fluid dynamics （CFD） in chemical engineering with an introduction to the state of the art, remaining problems and some aspects in the frontiers. Compared with its traditional applications, CFD is facing more complicated multiphase systems and coupled processes of flow, transportat and reaction. Traditional continuum approaches based on mono-scale statistical averaging are insufficient to precise design of products and processes. The incorporation between multi-scale methods and particle methods may prove an effective way to fulfiU these requirements by quantifying meso-scale structures and behaviors with stability analysis and interfacial discontinuity descriptions, which leads to accurate macro-scale models. This interplay brings new possibilities to cope with both traditional challenges such as turbulence and multiphase flows, and new frontiers such as micro flow, biofluids, polymeric flow and granular flow, and provides new tools for the R＆D activities in chemical industry.
出处
《计算机与应用化学》
CAS
CSCD
北大核心
2006年第1期9-14,共6页
Computers and Applied Chemistry
基金
国家自然科学基金资助项目(20235020
20175036)
关键词
计算流体力学
多尺度方法
粒子方法
微流动
聚合物流动
颗粒流
computational fluid dynamics, multi-scale method, particle method, micro flow, polymeric flow, granular flow
