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。**他们有一个专门的团队，使用计算流体动力学（CFD）来模拟各种商业和工业空间中的空气分配系统，并用于创新研究产品开发。他们的产品之一，冷梁，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。重要的是要尽可能快地实现空气的混合，因此Price Industries有兴趣改变喷嘴的形状，从传统的圆形形状**，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单射流和双射流的影响，这已被证明会产生非常复杂的湍流流场。对于公司来说，能够准确地预测喷嘴的流量**是非常重要的，以便使用CFD模拟冷梁气流分配系统。开展了Engage研究项目**，评估了几种CFD方法对不同喷嘴形状的单个喷嘴流出量建模的有效性，并提出了改进CFD建模的建议。在此基础上，我们的目标是扩展建模工作，以评估几种CFD方法对不同喷嘴形状和间距的双射流建模的有效性。一旦验证，CFD模拟将扩展到一系列喷嘴，如果时间允许，将扩展到房间内的整个冷梁单元。将向Price Industries提出关于喷嘴位置的建议**，以优化射流混合以及**最合适的CFD模型。这项工作将通过潜在地减少将新HVAC产品推向市场所需的时间来支持Price Industries，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.**They have a dedicated team that uses Computational Fluid Dynamics (CFD) to simulate air distribution**systems in a wide range of commercial and industrial spaces and for innovative research product development.**One of their products, a chilled beam, is a cooling/heating device that uses high velocity nozzles to draw room**air through an air/water heat exchanger. It is important to achieve as much mixing of the air quickly as**possible, so Price Industries is interested in changing the shape of the nozzles from a traditional circular shape**to optimize the design of the chilled beam unit. They have recently conducted physical experiments to**investigate the effect of nozzle shape for single and twin jets, which has proven to produce very complex**turbulent flow fields. It is important for the company to be able to accurately predict the flow from the nozzle**in order to simulate the in a chilled beam air distribution system using CFD. An Engage research project was**conducted to evaluate the effectiveness of several CFD methods for modelling the nozzle outflow from a single**jet for various nozzle shapes and provide recommendations to improve the CFD modelling. Building off this**work, we aim to extend the modelling efforts to evaluate the effectiveness of several CFD methods for**modelling twin jets for various nozzle shapes and spacing. Once validated the CFD simulations will be**extended to an array of nozzles and time permitting, an entire chilled beam unit in a room. Recommendations**will be made to Price Industries regarding the placement of the nozzles to optimize jet mixing as well as the**most appropriate CFD model to use. This work will support Price Industries by potentially reducing the time**required to introduce new HVAC products to the market, as new designs can be tested first using numerical**simulations using their improved CFD methodology.