Using numerical calculation method, numerical solutions of hydrodynamic pressure distribution and vertical force caused by grinding fluid in grinding zone are obtained.
用数值分析方法，得出了砂轮磨削区内磨削液动压力的分布曲线和液膜举起力。
2
When underbalanced drilling or drilling easy leaky zone by using aeration fluid, the determination of fluid density and downhole fluid column pressure is very important.
利用气体型流体进行欠平衡钻井，或钻易漏地层时，流体密度及井下液柱压力的确定十分重要。
3
The contact between fluids is usually gradual rather than sharp, forming a transition zone of mixed fluid.