| 钝尾车辆被动通风减阻方法的数值模拟 |
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| 引用本文： | 王耀伟,申振华,覃莺.钝尾车辆被动通风减阻方法的数值模拟[J].沈阳航空工业学院学报,2007,24(4):29-33. |
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| 作者姓名： | 王耀伟 申振华 覃莺 |
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| 作者单位： | 沈阳航空工业学院,飞行器动力与能源工程学院,辽宁,沈阳,110136 |
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| 摘 要： | 为了减小车辆阻力,提高燃油利用率,提出了一种钝尾车辆的被动通风减阻方法,即在钝尾车辆的下部适当部位开一个适当尺寸的通孔,以便为均衡车体前后的压力提供一个通道,当车辆行驶时,使得车体前部的"高压"气体能够通过这个孔流到相对"低压"的车体底部区域,从而减少车辆的压差阻力以降低燃油消耗。并对其在10、15、20、25、30及35m/s的各种通常的行驶速度下进行了3-D数值模拟,结果证明这种减阻方法的十分有效。
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| 关 键 词： | 钝尾车辆 不良流线体 阻力减少 压差阻力 数值模拟 |
| 文章编号： | 1007-1385（2007）04-0029-05 |
| 收稿时间： | 2007-06-05 |
| 修稿时间： | 2007年6月5日 |
Numerical simulations of reducing drag on bluff-body vehicles by passive base-bleed |
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| Wang Yao-wei,Shen Zhen-hua,Qin Ying.Numerical simulations of reducing drag on bluff-body vehicles by passive base-bleed[J].Journal of Shenyang Institute of Aeronautical Engineering,2007,24(4):29-33. |
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| Authors: | Wang Yao-wei Shen Zhen-hua Qin Ying |
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| Institution: | Shenyang Institute of Aeronautical Engineering, Liaoning Shenyang 110136 |
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| Abstract: | In order to reduce the drag on vehicles and improve the using efficiency of fuel.a passive base-bleed method for reducing drag of bluff-body vehicles is proposed,in which a proper through hole is made in the lower part of the vehicles to have the "higher pressure" air in front of the vehicle flow to its"lower pressure" base region passing though the hole,thus reduce the pressure drag on the vehicle and the fuel consumption.3-D numerical simulations to the flow field around the vehicle are conducted at traveling speeds of 10,15,20,25,30 and 35 m/s,which includes various normal traveling speeds,and results show that the passive base-bleed method of drag reduction for the bluff-body vehicles is very effective and promising. |
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| Keywords: | bluff-body vehicle bluff body drag reduction pressure drag numerical simulation |
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