Numerical Studies of Turbulent Multiphase Flows and Heat Transfer in Industrial Thermofluid Systems

工业热流体系统中湍流多相流和传热的数值研究

• 批准号: 105727-2012
• 负责人: Zhang, Chao
• 金额: $ 1.6万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569107
• 关键词: Numerical; Studies; Turbulent; Multiphase; Flows

The growing complexity of modern thermofluid systems has imposed increasingly stringent requirements on enhanced design tools, which, in turn, requires a better understanding of the fluid flow and heat transfer in thermofluid systems. A viable and reasonably inexpensive approach to improve the existing design tools is through the development of advanced numerical models. Thus, the need for time-consuming and often costly testing can be reduced. This proposal deals with formulating and verifying mathematical and numerical models and their applications in industries to improve/optimize the thermofluid systems. The main objectives of the proposed research are to develop accurate numerical models for simulations of multiphase flows and to develop CFD assisted control system design techniques for industrial thermofluid systems. The goals of this proposed research are: (1) to improve the numerical models for the simulation of vapour-liquid two-phase flows in condensers, (2) to develop and validate numerical models and techniques for the simulations of gas-solid and liquid-solid two-phase flows in CFB reactors including chemical reactions, (3) to develop and validate numerical models for the simulations of gas-solid two-phase flows, and heat and mass transfers in industrial drying processes in order to improve their efficiency, (4) to develop an integrated design methodology for industrial furnaces and their control systems using CFD assisted approach to reduce NOx emission, and (5) to develop CFD assisted control system design for SCWR to improve the safety and efficiency of SCWR. The significance of the proposed research is that it will provide improved design tools for designs of high efficiency industrial thermofluid systems, reduce the combustion-generated pollutants, and more importantly train highly qualified personnel (6 Ph.D. and 2 master's students) who will not only have the general knowledge of numerical simulations of fluid flow and heat transfer, but also have the ability to apply the general knowledge in various industrial applications.

现代热流体系统日益复杂，对增强设计工具提出了越来越严格的要求，这反过来又需要更好地了解热流体系统中的流体流动和传热。 改进现有设计工具的一种可行且相当便宜的方法是通过开发先进的数值模型。因此，可以减少对耗时且通常成本高昂的测试的需求。 该提案涉及制定和验证数学和数值模型及其在工业中的应用，以改进/优化热流体系统。 本研究的主要目标是开发用于多相流模拟的精确数值模型，并开发工业热流体系统的 CFD 辅助控制系统设计技术。 这项研究的目标是：（1）改进冷凝器中汽液两相流模拟的数值模型，（2）开发和验证气固和液体模拟的数值模型和技术-CFB反应器中的固体两相流，包括化学反应，(3)开发和验证用于模拟工业干燥过程中气固两相流以及传热传质的数值模型，以提高其效率， (4)开发工业炉及其控制系统的集成设计方法，利用CFD辅助方法减少NOx排放；(5)开发SCWR的CFD辅助控制系统设计，以提高SCWR的安全性和效率。 本研究的意义在于，它将为高效工业热流体系统的设计提供改进的设计工具，减少燃烧产生的污染物，更重要的是培养高素质人才（6名博士生和2名硕士生）。不仅具有流体流动和传热数值模拟的一般知识，而且具有将一般知识应用到各种工业应用中的能力。