As a soccer ball slows down after it's kicked in the air, the air flow around it changes from turbulent to smooth.
当球在空中速度减慢时，周围的气流从湍流变为稳定的层流。
The width of the wake is larger and the base pressure of the plate is lower in comparison with the fully turbulent wake behind a smooth flat plate at the same flow conditions.
与在相同流动条件下光滑平板后的湍流尾流比较，涡街尾流较宽，平板底部压力较小。
Heat transfer in turbulent free swirl flow produced by a new developed swirl generator in the inlet region of a smooth pipe has been studied.
研究由一种新的旋流发生装置所形成的自由旋流在光滑管入口段的传热情况。
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