估算商用车辆挡风玻璃除雾问题的新型风道设计

Safak Akgunlu, Onur Özcan, Aykut Bacak, Alisan Gonul, Tolga Taner, A. S. Dalkılıç
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摘要

这项研究是关于客车挡风玻璃上的雾气,因为这种雾气会让司机看不清东西,非常危险。研究的目的是找到一种有效的方法来扩散产生的雾气。根据这项研究,通过卡夫软管与汽车除霜器和除霜系统相连的空气管道设计必须升级。分析确定了当前空气管道设计可能需要改进的地方,然后对设计进行修改,以创造出更优越的设计。通过在装有第一种空气管道设计的车辆上进行气候室实验,并跟踪喷嘴顶端的实际空气流速值,对新技术的成功与否进行了评估。分析的边界条件是观测值。研究中使用了一个市售软件包,对原始和修改后的空气管道设计进行调查。该软件包采用了已知结果可靠的 k-ε 湍流模型。数据表明,根据比较结果进行的调整产生了有益的效果。由于对风道进行了改造,最大风速提高了 23%,而左侧和右侧风机的压力损失值分别降低了 2.5% 和 2.9%。由于风扇压力损失的减少,节省了大量能源,使左、右风扇的耗电量分别减少了 4.2% 和 4.7%。这一对比表明,新建的风道实际上将系统风扇出口的流速提高了 40%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Novel air duct designs to estimate the windshield demisting issue for a commercial vehicle
This study is about the fog on the windshields of passenger buses because it makes it hard for drivers to see, which is dangerous. The goal of the research is to come up with an effective way to spread the produced mist. According to the study, the air duct design, which is connected to the car’s defroster and defrosting system by Kraft hoses, has to be upgraded. The analysis identifies areas in which the current air duct design might be enhanced and then makes design modifications to create a superior design. By conducting climatic chamber experiments on a vehicle equipped with the first air duct design and tracking the actual air velocity values at the nozzle tips, the success of the new technique is assessed. The boundary conditions for the analysis are the observed values. The study involves the utilization of a commercially available software package to conduct investigations on both the original and modified air duct designs. The software package employs a k-ε turbulence model that is known to produce reliable results. The data demonstrate that the adjustments made in light of the comparison produced beneficial effects. The maximum air velocities were increased by 23%, while the pressure loss values of the left and right fans were reduced by 2.5% and 2.9%, respectively, due to the modification of the air duct. Significant energy was saved because of the decrease in fan pressure loss, which led to decreases in the power consumption of the left and right fans of 4.2% and 4.7%, respectively. This comparison shows that the newly built air ducts actually increased the flow rate at the system’s fan outlets by 40%.
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