CFD Validation of Nozzle Performance for Chilled Beam Design

Price Industries是空气分配、关键控制和噪音控制产品的市场领导者。他们的产品之一是冷梁，它是一种冷却/加热设备，使用高速喷嘴通过空气/水热交换器吸入室内空气。重要的是要实现尽可能多的混合空气通过线圈aspossible所以价格工业有兴趣改变形状的喷嘴从传统的圆形形状优化设计的冷却梁单位.他们最近进行了物理实验，以研究喷嘴形状对气流的影响，这已被证明会产生非常复杂的湍流场。普赖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的空气分配系统设计，并为创新研究产品开发提供支持。为了使用CFD模拟空气分配系统，能够准确预测冷梁中的气流对公司来说非常重要。Price目前在CFD模拟中使用的简单湍流模型不太可能捕捉到非圆形射流产生的复杂湍流。Price需要对最有效和高效的CFD方法进行一些调查和指导，以便准确地捕获这种复杂的流场。本研究将评估几种计算流体动力学方法模拟不同形状喷嘴流出的有效性，并为改进冷却梁喷嘴设计的计算流体动力学建模提供建议。这项工作将支持价格行业潜在的减少所需的时间，推出新的暖通空调产品到市场的新设计可以首先使用数值模拟测试，使用他们的改进CFD方法。

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.