Optimization of Trailer Boat Tail using Computational Fluid Dynamics simulations

使用计算流体动力学模拟优化拖车尾部

• 批准号: 530735-2018
• 负责人: Liu, Kefu
• 金额: $ 1.82万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=657780
• 关键词: Optimization; Trailer; Boat; Tail; using

Transtex Composite is pioneer manufacturer and designer of aerodynamic devices for the transportation**industry. Currently, the company has focused on the design and manufacturing of trailer side skirts and boat**tails to reduce the underneath and rear drag force on trailers. The preliminary model of the boat tail is designed**using the wind tunnel test results. However, improving their product and finalizing its design need more**experimental results. The wind tunnel experiment is costly, and it cannot provide all details of flow around the**boat tail. Other types of flow visualization techniques cannot be used to study the flow over a moving truck**especially in the actual scale. Therefore, utilizing Computational Fluid Dynamics (CFD) modeling is proposed**for the company to simulate the flow around a moving truck-trailer with a boat tail. Working on the**aerodynamic improvement of different truck bodies has been the focus of various research groups in the**automotive industries [1-3]. This effort has identified drag producing flow structures around heavy vehicles**and designed different add-on devices to reduce drag and improve the road fuel economy [4,5]. The drag force**can be reduced by modifying the rear end of the trailer and manipulate the near wakes. Boat tails are the**devices that can be used in this regard [6-8]. Various studies have been conducted to investigate the effects of**boat tail on reducing aerodynamic drag on the trailer [9, 10]. However, information regarding the flow behavior**around the boat tail especially in real scale is limited [11]. In this research, a set of CFD simulations will be**conducted to calculate the critical forces on the boat tail. Base on the CFD results, the performance of the**preliminary Transtex boat tail will be evaluated, and recommendations and suggestions will be provided to the**Transtex R&D team to improve their products. Also, the results of this research will be utilized as input for**Finite Element Analysis of the boat tail components such as joints and connections. The amount of fuel which**is used by a track to transfer between two points in Canada can be reduced dramatically when the drag**reduction facilities attached to trailers and consequently CO2 emission will be cut up to 8% in long distances.

Transtex Composite是运输**行业空气动力设备的先驱制造商和设计师。目前，该公司专注于拖车侧裙子和船只**尾巴的设计和制造，以减少拖车下方和后方的拖曳力。船尾的初步模型是使用风洞测试结果设计的。但是，改善其产品并确定其设计需要更多的实验结果。风洞实验的昂贵，并且无法提供**船尾周围流动的所有细节。其他类型的流动可视化技术不能用于研究移动卡车上的流动**，尤其是在实际规模上。因此，提出了使用计算流体动力学（CFD）建模的**，以使公司模拟用船尾围绕移动的卡车拖车的流量。在**汽车行业的各种研究小组的重点[1-3]。这项工作已经确定了重型车辆周围的阻力产生流量结构，并设计了不同的附加设备，以减少阻力并改善道路燃油经济性[4,5]。可以通过修改拖车的后端并操纵近唤醒来减少阻力**。船尾是可以在这方面使用的**设备[6-8]。已经进行了各种研究，以研究**船尾对拖车的空气动力阻力的影响[9，10]。但是，有关船尾周围流动行为的信息，尤其是在实际规模上是有限的[11]。在这项研究中，将进行一组CFD模拟，以计算船尾上的关键力量。基于CFD结果，将评估**初步的Transtex船尾的性能，并将向** Transtex R＆D团队提供建议和建议，以改善其产品。此外，这项研究的结果将被用作船尾组件（例如关节和连接）的有限元分析的输入。当连接到拖车上的拖动**减少设施并因此将在长距离长途降低8％时，可以大大减少**在加拿大两个点之间转移的燃料量。