车辆行驶状况路上调查采用分时段交错法进行，并使用具有高精度的可跟踪滤波的非接触式速度传感器等先进设备采集数据。
Vehicle real driving investigation comes up with time section cross method, and USES advanced instruments such as non-contacted speed sensor with tracking filter etc.
计算在非交错网格上进行，为了避免压力场的振荡，在连续方程中隐式地加入了压力的四阶数值耗散项。
The 4th order numerical dissipation for pressure was added in the continuity equation to avoid oscillations in pressure solution.
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