用三维数值模拟的方法研究了不同涡流比下直喷式柴油机缸内湍流流动的规律。
The turbulent flow characteristics in cylinders of direct injection diesel engine under different air swirl ratios are analyzed by multi dimensional simulation methods.
结果表明，PIV技术非常适于显示涡流、湍流等复杂的流动结构，是风洞实验中研究流动特性的一种非常有效、准确的方法。
The results show that the PIV is a credible and accurate method to study the flow characteristics and is suitable to explore the complicated flow structure, such as vortex, turbulence, etc.
本文以涡流管内可压缩气体三维强旋转湍流流场为研究对象，采用数学分析和数值模拟方法对涡流管内流场结构进行研究。
This paper does research on the three dimensional turbulent flow fields of compressible air with highly rotation, using methods of mathematical analyze and CFD simulation.
错误和不可靠性上升，接踵而来的是一整套湍流的征状，从小尘暴和暴风到只有卫星才可以看到的席卷整块陆地的涡流。
Errors and uncertainties multiply, cascading upward through a chain of turbulent features, from dust devils and squalls up to continent-size eddies that only satellites can see.
③连续震颤脉。震颤脉象的机理是血液在血管内形成涡流（湍流）。
The mechanism of TP is due to the circular movemant of blood flowing within the vessel.
③连续震颤脉。震颤脉象的机理是血液在血管内形成涡流（湍流）。
The mechanism of TP is due to the circular movemant of blood flowing within the vessel.
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