CFD Validation of Nozzle Performance for Chilled Beam Design

Price Industries是提供空气分配，关键控制和噪音控制产品的市场领导者。他们的产品之一，冷冻梁，是一种冷却/加热装置，使用高速喷嘴通过空气/水热交换器吸入室内空气。通过线圈实现尽可能多的空气混合是很重要的，因此Price Industries有意改变传统圆形喷嘴的形状，以优化冷梁装置的设计。他们最近进行了物理实验来研究喷嘴形状对气流的影响，这已被证明会产生非常复杂的湍流流场。Price有一个专门的团队，使用计算流体动力学（CFD）来验证各种商业和工业空间的空气分配系统设计，并为创新研究产品开发提供支持。对于公司来说，能够准确地预测冷梁中喷嘴的流量是非常重要的，以便使用CFD模拟空气分配系统。Price目前在他们的CFD模拟中使用的简单湍流模型不太可能能够捕获由非圆形射流产生的复杂湍流。为了准确地捕捉这种复杂的流场，Price需要对最有效和最高效的CFD方法进行一些研究和指导。本研究将评估几种CFD方法在不同喷嘴形状下对喷嘴出口进行建模的有效性，并为改进冷束喷嘴设计的CFD建模提供建议。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价格行业，因为新设计可以首先使用改进的cfd方法使用数值模拟进行测试。

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.