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81.
NomenclatureA(x,t)—Cross_sectionareaoffractureattimetandsitex,m2 ;Bg,Bw —Coalbedgasandwatervolumefactor,di mensionless;b—Langmuirfactor,(MPa) - 1 ;Cg,CR,Cw —Coalbedgas,rockandwatercom pressibilitycoefficient,(MPa) - 1 ;Cp —Sandratio ,dimensionless;Ct(x ,t)—Totalfracturin… 相似文献
82.
求得二阶流体和Maxwell流体在环管内不定常旋转运动问题的解析解.据此可以分析环管内旋转速度和切应力分布与变化特征.流体的物性常数、管道环隙大小等参数在解析公式中有明确反映,便于分析与讨论.本解可以用来分析类似的工程流动问题,尤其更具有针对性的是分析双筒流变仪中流动特征与应力状态,确定材料的粘弹性参数.通过计算,发现当外筒作简谐振动时,Maxwell流的速度和切应力变化曲线上有突变结,突变结上振幅和相位都发生突变.当外筒匀速旋转时,Maxwell流体的速度和切应力变化曲线分别呈斜方波和锯齿波形状.振动周期与材料常数Ha二次曲线相关. 相似文献
83.
刘慈群 《应用数学和力学(英文版)》1983,(5)
This paper seeks for the line source and cylindrical planesource solutions of unsteady axisymmetrical two-dimensionalflow through infinite and finite reservoirs with triple po-rosity.They not only reveal the essential characteristicsof fractured reservoirs but also generalize and develop theexisting primal results of homogeneous and porous media.Ref.[1]gives the line source solution of unsteady axi-symmetrical two-dimensional flow in infinite reservoir withdouble porosity;in this paper we study the problem of flowthrough triple porous media. 相似文献