Based on the theory of unsteady flow of compressible fluid and the seepage theory of formation fluid, the mathematical model of the gas transient flow in the wellbore has been established.
基于可压缩流体不稳定流动理论及地层流体渗流理论，建立了气体钻井过程中井筒瞬态流动的数学模型。
Established a mathematical model to simulate the instantaneous flow fields and cavitation by combining the weakly compressible fluid theory and the Large Eddy Simulation method.
建立了微可压缩流理论和大涡模拟方法相结合的空化流数学模型，为四川大学工学博士学位论文孔板泄洪洞空化初生的研究开辟了一条新途径。
The compressible linear stability theory and the method of multiple scales are used to study the problem of three dimensional nonparallel flow stability for boundary layers.
采用线性稳定性理论和多重尺度方法，研究三维可压缩的非平行流边界层稳定性问题。
The new technique takes into account the effects of air density change and rotational speeds, thereby improving the analogy theory and making it applicable to compressible flow.
新方法考虑到工质密度和转速变化对压气机特性的影 响，改进了相似理论并使其可应用于可压缩流体计算中。
The new technique takes into account the effects of air density change and rotational speeds, thereby improving the analogy theory and making it applicable to compressible flow.
新方法考虑到工质密度和转速变化对压气机特性的影 响，改进了相似理论并使其可应用于可压缩流体计算中。
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