CFD Validation of Nozzle Performance for Chilled Beam Design

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**，并用于创新的研究产品开发。**他们的产品之一，冷冻梁，是一种冷却/加热设备，它使用高速喷嘴通过空气/水热交换器来吸引空气**。尽快实现尽可能多的空气混合非常重要，因此Price Industries有兴趣将喷嘴的形状从传统的圆形改为**，以优化冷冻梁机组的设计。他们最近进行了物理实验，以**研究喷嘴形状对单喷流和双喷流的影响，这已被证明产生了非常复杂的湍流流场。对于该公司来说，能够准确预测喷嘴的流量**，以便使用CFD模拟冷冻梁空气分配系统中的流量，这一点非常重要。开展了一项Engage研究项目，以评估几种CFD方法对不同喷嘴形状的单个喷嘴的喷嘴外流建模的有效性，并提供改进CFD建模的建议。在这项**工作的基础上，我们的目标是扩展建模工作，以评估几种CFD方法**为不同喷嘴形状和间距的双喷流建模的有效性。一旦得到验证，CFD模拟将**扩展到一系列喷嘴和时间允许的情况下，即房间内的整个冷梁单元。将向普莱斯工业公司推荐**喷嘴的位置，以优化喷气混合以及**最合适的CFD模型使用。这项工作将潜在地减少向市场推出新的暖通空调产品所需的时间**，从而为Price Industries提供支持，因为新设计可以首先通过使用其改进的CFD方法的数值**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.