Using two-flow model, small perturbation theory and solvable conditions of one-order linear equations, a dispersion equation of pressure wave in horizontal air-liquid bubbly flow was proposed.

利用两流体模型、小扰动原理和线性一阶齐次方程组有解的条件，得到了气液泡状流型下的压力波色散方程。

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Simulates the changes of pressure difference, velocity field and the air flow in the door opening process, and discusses the influence to the contamination dispersion.

模拟了开门过程病房内外压差的变化，门附近的流场状况，以及进出门气流的变化状态，探讨了开门对污染物扩散的影响。

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Swelling, cracking, dispersion, migration and plugging of clay minerals are the main factors of the reservoir damage in high-pressure low-permeability reservoirs.

粘土矿物的膨胀、破裂、分散、运移和堵塞是对高压低渗油藏储层伤害的主要因素之一。

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