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隧道对超车过程车辆瞬态气动特性的影响 被引量:1

Influence of road tunnel on vehicle s transient aerodynamic characteristics during overtaking processes
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摘要 该文利用动网格和滑动交界面技术实现了一辆轿车超过一辆大型货车过程的三维瞬态数值模拟,分别模拟了在开阔路面和单向双车道隧道内两种工况下的超车过程。通过对车辆外流场进行分析,找出了隧道内超车过程中被超车和主超车的气动力变化规律,并与开阔路面上的相同过程进行了对比。结果表明:超车过程对被超车货车的气动特性影响大,其阻力系数和侧向力系数均发生大幅度变化,呈现类似正弦变化的趋势,而对主超车轿车影响相对较小;隧道内与开阔路面上两种超车过程中,两车侧向力和阻力的变化规律均相同,但是隧道内车辆气动力系数的变化幅度却大于开阔路面,显示隧道内超车对车辆行驶稳定性的影响更大,其安全性更需重视。 This paper explores the impact of interdependence structure on use of power and the moderating role of personal guanxi. The result shows that total interdependence has significant positive impact on promise, threat and suggestion strategies. Interdependence asymmetry has significant negative impact on information exchange, suggestion and promise strategies. Personal guanxi negatively moderates the relationship between total interdependence and promise strategy, and positively moderates the relationship between total interdependence and suggestion strategy.
作者 胡保玲 郑浩 HU Bao-ling, ZHENG Hao (1. Qingdao Technological University, Qingdao, Shandong 266520; 2. Shandong Economic University, Jinan, Shandong 250014)
出处 《石家庄经济学院学报》 2009年第5期58-62,共5页 Journal of Shijiazhuang University of Economics
基金 基金项目:山东省自然科学基金资助项目(Y2008H29)和山东省统计科研重点项目(KT0861)
关键词 动网格技术 瞬态气动特性 超车 隧道 dynamic mesh technique transient aerodynamic characteristics overtaking road tunnel
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参考文献9

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