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首页> 外文期刊>International Journal of Automotive Technology >EXPERIMENTAL STUDY OF THE FLOW INDUCED BY A VEHICLE FAN AND THE EFFECT OF ENGINE BLOCKAGE IN A SIMPLIFIED MODEL
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EXPERIMENTAL STUDY OF THE FLOW INDUCED BY A VEHICLE FAN AND THE EFFECT OF ENGINE BLOCKAGE IN A SIMPLIFIED MODEL

机译:简化模型中车辆风扇引起的流动和发动机堵塞影响的实验研究

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摘要

Fans are often tested without downstream blockage and, thus, the performance is considerably different when the fan is mounted in a vehicle as part of a cooling system and where high blockage effect is present downstream. The aim of the present work is to analyze by laser Doppler velocimetry LDV measurements the topology of the flow induced by a fan incorporated in a simplified underhood model reproducing engine blockage and to study the blockage effect of the engine positioning on the flow induced by the fan. The distance between the fan and the engine block affects the mean flow axial velocity U. The vertical velocity component W is greatly influenced by the variation of the distance between the fan and the engine block, both in magnitude and topology.
机译:风扇通常在没有下游阻塞的情况下进行测试,因此,当将风扇作为冷却系统的一部分安装在车辆上并且下游存在较高的阻塞效果时,性能会有很大不同。本工作的目的是通过激光多普勒测速仪LDV测量来分析由风扇引起的气流的拓扑,该拓扑包含在简化的发动机罩模型中,再现了发动机的阻塞,并研究了发动机定位对风扇引起的气流的阻塞效应。 。风扇与发动机缸体之间的距离影响平均流轴向速度U。垂直速度分量W受到风扇与发动机缸体之间的距离变化(大小和拓扑结构)的很大影响。

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