Numerical Modeling of Multi-phase Flows through Valves

通过阀门的多相流的数值模拟

• 批准号: 513538-2017
• 负责人: Nikrityuk, Petr
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640595
• 关键词: Numerical; Modeling; Multi; phase; Flows

SlurryFlo Valve Corp. is a 100% Canadian owned company working in the field of engineering andmanufacturing across Canada. SlurryFlo Valve Corp. designs custom-engineered control valves for variousflow conditions applied to a variety of industrial applications in the mineral processing, gas and petroleum, andpower generation sectors and many other fields. With increasing demand for new, more effective valves, thecompany engineering group has observed a need to perform more advanced computational research on severalcritical flow modeling scenarios involving large-scale control valves. One of the critical issues in designingnew large-scale valves (>30 inches) is an increase in the turbulence intensity of the flow passing through thevalve and the occurrence of phase separation or segregation due to downstream recirculation zones past thevalve. As a result, the turbulence and phase segregation significantly influence the so-called valve flowcoefficient, which plays the governing role in valve design and in the selection of materials used in valveproduction. In this view, an accurate prediction of the valve flow coefficient taking into account the impact ofturbulence is necessary for an optimal design of large scale valves. Calculations of this kind will help thecompany to make valves more reliable and more effective in terms of operation and production. In this workthe flow coefficient of valves will be calculated directly using three-dimensional computational fluid dynamicmodels (3D CFD) under different flow conditions.The innovative nature of this work lies in an adoptation of 3D CFD-based models (including a set ofsubmodels and numerical schemes) available in the commercial solver ANSYS-Fluent to predict the flowcoefficient of valves for single-phase and multiphase turbulent flows through valves of different sizes. Theexpected outcome from modeling single-phase and multi-phase flows through a valve will contributesignificantly to enhancing the reliability and efficiency of engineered valves in a variety of industrialapplications in mineral processing, gas and petroleum and many other fields across Canada.

SlurryFlo Valve Corp.是一家100%加拿大独资公司，在加拿大各地从事工程和制造领域的工作。SlurryFlo Valve Corp.为各种流动条件设计定制的控制阀，适用于选矿、天然气和石油以及发电部门和许多其他领域的各种工业应用。随着对新的、更有效的阀门的需求不断增加，该公司的工程团队已经注意到，需要对涉及大型控制阀的几种关键流动建模场景进行更高级的计算研究。设计新的大型阀门(30英寸)的关键问题之一是增加流过阀门的水流的湍流强度，以及由于经过阀门的下游回流区而出现相分离或分离。因此，湍流和相分离显著影响所谓的阀门流量系数，该系数在阀门设计和阀门生产所用材料的选择中起着主导作用。在这种观点下，考虑湍流影响的阀门流量系数的准确预测对于大型阀门的优化设计是必要的。这类计算将有助于该公司使阀门在运行和生产中更加可靠和有效。本文采用三维计算流体力学模型(3D CFD)直接计算不同流动条件下阀门的流量系数，其创新之处在于采用了商用求解器Ansys-FLUENT中的3D CFD模型(包括一系列子模型和数值格式)来预测不同尺寸阀门的单相和多相湍流流动的流量系数。通过阀门对单相流和多相流进行建模的预期结果将极大地提高工程阀门在加拿大各地选矿、天然气和石油以及许多其他领域的各种工业应用中的可靠性和效率。