并确定了产生非线性渗流的压力梯度区域。
Meantime, the pressure gradient region, which producing the non-linear seepage flow, was calculated.
本文研究一般非线性渗流方程解的一种性态。
In this paper, we investigate a behavior of solution of general nonlinear filtration equations.
活动边界非线性渗流是现代渗流力学的前沿研究领域之一。
A nonlinear flow with a moving boundary is one of up-to-date research fields of modern mechanics of fluids in porous media.
活动边界非线性渗流是现代渗流力学的前沿研究领域之一。
The study on simulation of moving boundary in numerical tidal flow model;
结果表明流度与启动压力梯度是形成非线性渗流的主要因素。
The results showed that mobility and start-up pressure gradient are the main reasons of non-linear seepage flow effect.
结果表明，该区含气原油为假塑性流体，地层条件下非线性渗流显著；
The result shows that live crude in this area is pseudoplastic fluid, nonlinear seepage flow is remarkable at the formation conditions;
根据渗流实验结果，建立了含束缚水的低渗渗透岩石介质气体非线性渗流定律。
According to the experiment results of percolation, the gas nonlinear percolation law in low permeable medium with irreducible water is found.
通过试验和理论相结合的方法建立了考虑科林·贝尔效应的低渗透气藏非线性渗流方程。
Based on percolation mechanism analysis of low permeability gas reservoirs, combined the effect of Klinkenberg, established non-linear percolation mathematical model.
采用实验、理论与计算相结合的方法建立低渗透孔隙-裂隙介质气体非线性渗流运动方程。
Methods of experiment, theory and calculation were used to establish a new nonlinear flow law. Experiment results of gas flow in low permeability pore-fissure media were analyzed.
可以看出，在坝基非达西渗流分析中，不能采用线性渗流规律来近似代替非线性渗流规律。
It can be proved that the non linear seepage law can not be approximately regarded as the linear seepage law in analysis of non Darcy seepage through dam foundation.
计算结果表明，排土场渗流区普遍存在非线性渗流状态，计算出的非线性渗流水位较线性渗流水位高。
A case study shows that nonlinear seepage exists in all the seepage area of the waste dump and the water level is higher than that of linear seepage.
低渗透非线性渗流是开发低渗透油气田所需解决的重要基础问题，也是现代渗流力学的前沿研究方向之一。
A problem on nonlinear flow in low-permeability porous media is a basic one in exploiting low-permeability oil and gas fields.
计算结果表明：各种非线性渗流效应和动态流体重力作用对计算结果有一定的影响，忽略这些因素将对计算结果产生较大的偏差；
The calculation results show: each nonlinear flow and dynamic fluid gravity have certain effect on calculation results, and ignoring these factors will cause much deviation;
低渗透岩石非线性渗流机理及其数值计算方法的研究是当前渗流力学研究的一个前沿课题，对水利工程、石油工业、矿山开采、废料填埋等国民生产有着重要的意义。
This doctoral dissertation is pertaining to the research subject concerning the non-linear seepage mechanism in low permeability incompetent rock, which is supported by National Science Fund of China.
建立了各种边界条件下考虑井筒储存效应和表皮效应的非线性不稳定渗流数学模型，并用数值法对其求解。
The nonlinear mathematical models with wellbore storage and skin effects under several boundary conditions were established and solved by using numerical methods.
本文用特征线法研究了碱水二维渗流的对流模型，给出了碱水浓度非线性波传播公式。
We study the two-dimensional model of alkaline pulses by using the method of characteristics. The formulae of the nonlinear concentration waves are presented.
裸洞隧道病害的产生主要是地下应力场在损伤、渗流、温度等因素的耦合作用下形成的，是非常复杂的非线性耦合过程。
Cavern tunnel diseases, mostly forming underground stress field under the action of damage, seepage, temperature and other factors, are very complicated nonlinear coupling process.
实例计算表明渗流的非线性对孔隙压力分布模式有明显影响。
The case calculation indicates that the nonlinearity of the flow has an important role in the distribution of pore pressure.
考虑了二次梯度项影响的非线性径向流动问题的无限大地层和有界地层渗流模型。
The models of the nonlinear radial flow for the infinite and finite reservoirs including a quadratic gradient term were presented.
采用非线性分岔及突变理论研究破碎岩体中气体渗流失稳的动力学机制。
The theories of bifurcation and catastrophe in nonlinear science are used to study the dynamic mechanism of instability of gas flow in broken rock.
在松散体模型试验中，不仅可以考虑土石变形的非线性，而且可以实现渗流，地震荷载亦可作为体积力处理。
In the loose model test, we can not only consider the nonlinear of the earth and rock-fill deformation, but also realize the seepage.
在松散体模型试验中，不仅可以考虑土石变形的非线性，而且可以实现渗流，地震荷载亦可作为体积力处理。
In the loose model test, we can not only consider the nonlinear of the earth and rock-fill deformation, but also realize the seepage. The earthquake loadings can be thought as the body force.
本文用变分有限元方法处理了两维两相非线性不稳定渗流模型。
In this paper, a non-linear model for two dimension and two phases unsteady state flow through a porous medium is solved by a variational finite element method.
根据实验渗流曲线的非线性特征，并结合微分原理，提出了一种广义的渗流描述法。
According to the non_linearity of the flow curve and the differential theory, a generalized description method for fluids flow was propose.
正确认识低渗透油藏的非线性达西渗流规律，有助于更为合理、有效地开发低渗透油藏。
Correct understanding on the non-linear Darcy percolation mechanism in the reservoirs helps to develop low-permeability reservoirs more reasonably and more efficiently.
室内试验研究表明，流体在低渗透多孔介质中渗流时表现出非线性特征。
Laboratory test results show that, fluid flowing in low permeability porous media exhibit nonlinear characteristics.
实验结果表明饱和粘土微尺度孔隙渗流为非线性流。
Results of experiments show that flow in micro-scale pore of saturated clays follows law of nonlinear flow.
实验研究和现场实践表明，流体渗流的非线性和流态的多变性是复杂介质储层中的主要特征。
The experiments and practice demonstrate that the non_linearity of fluids flow and variability of flow states are the main features of fluids flow in the reservoirs composed of complicated media.
实验研究和现场实践表明，流体渗流的非线性和流态的多变性是复杂介质储层中的主要特征。
The experiments and practice demonstrate that the non_linearity of fluids flow and variability of flow states are the main features of fluids flow in the reservoirs composed of complicated media.
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