CFD Validation of Nozzle Performance for Chilled Beam Design

冷梁设计喷嘴性能的 CFD 验证

• 批准号: 515840-2017
• 负责人: Dow, Karen
• 金额: $ 1.82万
• 依托单位: University of Manitoba
• 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=640642
• 关键词: CFD; Validation; Nozzle; Performance; Chilled

Price Industries is a market leader in supplying air distribution, critical controls and noise control products. Oneof their products, a chilled beam, is a cooling/heating device that uses high velocity nozzles to draw room airthrough an air/water heat exchanger. It is important to achieve as much mixing of the air through the coil aspossible so Price Industries is interested in changing the shape of the nozzles from a traditional circular shapeto optimize the design of the chilled beam unit. They have recently conducted physical experiments toinvestigate the effect of nozzle shape on the air flow, which has proven to produce very complex turbulent flowfields. Price has a dedicated team that uses Computational Fluid Dynamics (CFD) to validate the design of airdistribution systems in a wide range of commercial and industrial spaces and for innovative research productdevelopment support. It is important for the company to be able to accurately predict the flow from the nozzlein a chilled beam in order to simulate the air distribution system using CFD. It is unlikely that the simpleturbulence model that Price currently uses in their CFD simulations will be able to capture the complexturbulent flow that is produced from a non-circular jet. Price requires some investigation and guidance on themost effective and efficient CFD method in order to accurately capture this complex flow field. This researchwill evaluate the effectiveness of several CFD methods for modelling the nozzle outflow for various nozzleshapes and provide recommendations to improve the CFD modelling for the chilled beam nozzle design. Thiswork will support Price Industry by potentially reducing the time required to introduce new HVAC products tothe market as new designs can be tested first using numerical simulations using their improved CFDmethodology.

普莱斯工业公司是空气分配、关键控制和噪音控制产品的市场领先者。他们的产品之一是冷梁，这是一种冷却/加热设备，它使用高速喷嘴通过空气/水热交换器来吸入室内空气。通过盘管实现尽可能多的空气混合是很重要的，因此普莱斯工业公司有兴趣将喷嘴的形状从传统的圆形改变为优化冷梁机组的设计。他们最近进行了物理实验，以研究喷嘴形状对气流的影响，这已被证明产生了非常复杂的湍流流场。普莱斯拥有一支专门的团队，使用计算流体动力学(CFD)来验证各种商业和工业空间中的气流组织系统的设计，并为创新的研究产品和开发提供支持。为了使用CFD模拟空气分配系统，该公司必须能够准确地预测冷冻梁中喷嘴的流量。普赖斯目前在CFD模拟中使用的简单湍流模型不太可能能够捕捉到非圆形射流产生的复杂湍流。普赖斯需要对最有效和最高效的CFD方法进行一些调查和指导，以便准确地捕捉到这种复杂的流场。本研究将评估几种CFD方法对不同喷管形状喷管外流的模拟效果，并为改进冷梁喷管设计的CFD模拟提供建议。这项工作将通过潜在地减少向市场推出新的暖通空调产品所需的时间来支持普莱斯行业，因为新的设计可以首先使用他们改进的CFD方法使用数值模拟进行测试。