【摘要】 借助热线风速仪在稳流气道试验台上研究了不同涡流比进气道在气缸内产生的流场特性。通过绘制切向速度和轴向速度以及紊流强度的分布曲线,给出了进气过程气缸内稳态流场的描述,并且揭示了逆涡流区的存在及其变化情况。更多还原

【Abstract】 Air flow patterns generated by Swirl intake ports in the cylinder of asteady-flow test rig were studied with the hotwire anemometry.The distri-butions of tengential and axial velocity as well as turbulent intensity weremeasured and the steady air flow patterns in cylinder during intake processwere described.Counter swirl regions were found and their evolutions werer vealed.更多还原