有错排射流冲击的短通道流场研究

Investigation of Flow Fields in a Short Confined Channel with Staggered Jet Impingement

School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China

摘要: 用实验和数值模拟的方法,研究了在错排冲击孔作用下的受限通道的流场结构。并用五孔探针对通道的流场进行了详细的测量,着重研究了不同雷诺数和不同通道高径比(通道高度与射流孔直径之比)对通道内流场结构的影响。实验结果表明:通道的流场中存在着复杂的漩涡结构;在同一高度下,雷诺数的改变对通道流场的影响很小;通道高度的改变对通道流场有明显影响。
- 航空、航天推进系统 /
- 数值模拟 /
- 流场结构 /
- 冲击冷却 /
- 射流孔 /
- 五孔探针
Abstract: Experimental and numerical simulation results were presented to describe the flow behavior in the channel with staggered jet impingement arrangement.Measurements of flow characteristics at different Reynolds numbers and different channel heights were performed using a five-hole probe.Important results are:(1) there are complicated vortices in the channel;(2) with the same channel height,Reynolds number does not play an important role to the channel flow characteristics;(3) the change of channel heights has significant effect on flow characteristics.
- aerospace propulsion system /
- numerical simulation /
- flow distribution /
- impingement cooling /
- impinging hole /
- five hole probe

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