基于驾驶室内流的某解放卡车热舒适性研究

发布时间：2018-02-14 01:59

本文关键词： 热舒适性驾驶室计算流体动力学内流卡车　出处：《吉林大学》2016年硕士论文　论文类型：学位论文

【摘要】：解放重卡在工程机械中被广泛应用,其驾驶室的热舒适性与驾驶舒适性及驾驶安全密切相关,十分重要。良好的驾驶室热舒适性能够保证驾驶员身体舒适,减少身体不适带来的行驶安全隐患,有利于行驶安全;可以提高驾驶员的乘坐体验,提高乘坐舒适性;货车长距离运输时沿途经常发生气候变化,及季节变化,因此对驾驶室热舒适性要求高,以保证驾驶室舒适。在相对封闭的汽车车厢内,为了满足舒适性的要求,除了能够对温度进行调节和适时适量的补充驾驶室内人员需要的空气外,还要进行驾驶室内的气流调配,以完成制冷、采暖和通风等工况,从而保证驾驶室的舒适性。本文以某款解放卡车驾驶室室内热环境为研究对象,其中假人模型参照STAR-CCM+用户手册中现有的假人模型,通过建立驾驶室仿真模型,采用CFD方法,应用CFD数值模拟软件STAR-CCM+对驾驶室进行数值模拟,得出驾驶室内的气流、温度分布,对驾驶室内热舒适性进行分析,以充分把握解放卡车驾驶室的热舒适性,为进一步提高解放卡车驾驶室舒适性提供良好的基础。在此基础上,对空调风道系统及进气排气位置进行优化改进,借助计算机数值仿真技术,对比各个优化方案对于驾驶室热舒适性的改进效果,并最终提出最佳优化方案。
[Abstract]:Jiefang heavy truck is widely used in construction machinery. The thermal comfort of cab is closely related to driving comfort and driving safety, which is very important. Reducing the hidden dangers of driving safety brought about by physical discomfort is beneficial to driving safety; it can enhance the driver's ride experience and improve ride comfort; the climate changes and seasonal changes often occur along the way when trucks are transported over long distances. Therefore, the thermal comfort of the cab is high to ensure the comfort of the cab. In order to meet the requirements of comfort in the relatively closed car compartment, In addition to being able to regulate the temperature and replenish the air needed by personnel in the cab at the right time, the air flow in the cab should be allocated to complete the conditions of refrigeration, heating and ventilation. So as to ensure the comfort of the cab. This paper takes the indoor thermal environment of the cab of a liberation truck as the research object, in which the dummy model refers to the existing dummy model in the STAR-CCM user manual, and through the establishment of the cab simulation model, the CFD method is adopted. The CFD numerical simulation software STAR-CCM is used to simulate the cab, and the distribution of air flow and temperature in cab is obtained. The thermal comfort of cab is analyzed in order to fully grasp the thermal comfort of cab of liberation truck. In order to provide a good foundation for further improving the comfort of the cab of the liberation truck, the air duct system and the intake and exhaust position of the air conditioning system are optimized and improved with the help of computer numerical simulation technology. The improvement effect of each optimization scheme on cab thermal comfort is compared, and finally the optimal optimization scheme is put forward.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U463.81

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