文中重点讨论了管壳式换热器管束中的流体弹性不稳定性。
In this paper the authors focus to discuss the fluidelastic instability in tube arrays of heat exchangers.
随着流体弹性的增加,在收缩孔道中产生了涡流,涡流的强度与弹性的大小成正比。
With the increasing of elasticity of fluid, the turbulence in shrink hole comes into being, whose intensity is in direct proportion to elasticity.
针对发生流体弹性不稳定现象时的临界流速;不同螺旋半径上相邻管的相互影响;同一螺旋半径上、下游管的相互影响等问题作了讨论。
The problem such as the critical flow velocity at which fluid elastic instability phenomenon begin to occur, the reciprocal action on neighboring tubes in different helical radius, and that.
就其流变性而言,聚合物溶液和碱—表面活性剂—聚合物(ASP)复合体系均属粘弹性流体,但在中等剪切速率的简单剪切流动条件下,其流变性可用幂律模式描述。
The compound of Alkali Surfactant Polymer (ASP) is a kind of viscoelastic fluid, its rheological behavior can be formulated by power law model in simple shear flow within medium shear rate.
本文提出一种非密接界面模型,其中两个弹性固体被一个粘性流体薄膜所分开。
One of the uncoupled boundary models has been suggested, in which two elastic solids are separated by a viscous fluid membrane.
从材料力学及流体力学角度探讨了弹性齿汽封设计的依据及其存在的理论基础。
From the aspects of material mechanics and fluid mechanics, discusses the design reason of elastic toothed belt vapour seal and its theory foundation.
采用递增应力流变学方法将弹性、塑性、断裂变形结合并与流体和化学耦合起来。
The elastic strain, plastic strain and fracturing are integrated and coupled with fluid and chemistry using an incremental stress rheological approach.
本文简要评述了双亲分子流体膜的弹性与热力学涨落的理论研究现状。
The theory of elasticity and thermal undulations of fluid membranes of amphiphiles is reviewed.
本文利用弹性波理论对流体——流体模型下直接场被井内流体割线积分抵消进行了证明。
By means of the theory elastic wave, this paper demonstrates direct field's being offset under fluid fluid matrix by secant integral in well.
分析了低饱和度时流体对岩石弹性性质的影响。
The influence of pore fluid on rock elastic properties at low saturation is analyzed.
本文研究弹性管中的流体非线性波问题。
The non-linear wave of incompressible fluid in an elastic pipe is studied.
实验条件相似的流体,其弹性越大,驱替后残余油饱和度越低。
The higher the elasticity is, the lower the saturation of residual oil will be.
最后,利用反演得到的流体敏感弹性参数进行含气储层预测。
Finally, the obtained fluid sensitive elastic parameters were used for gas-bearing reservoir prediction.
泡沫凝胶体系属于假塑性流体且粘弹性好。
Foam gel system is a pseudoplastic fluid and its viscoelasticity is good.
提出孔隙流体变化时岩石有效模量的计算,及利用孔隙弹性模量辨别储层中不同流体类型的计算方法。
The method was proposed to compute the rock modulus when one kind of pore fluid changed to another, and to identify the pore fluids by the use of poroelastic modulus.
弹性波振幅在岩石中的衰减程度受其温压、所含流体性质、流体饱和度、岩石组分、结构等因素的影响。
Attenuation of elastic wave amplitude in rock is affected by its temperature and pressure, filled fluid properties, fluid saturation, rock composition and structure, etc.
本文应用多重尺度约化微扰方法研究了充满流体的圆形弹性管壁上应力波的弱非线性调制问题。
The reductive perturbation method of multiple-scales is used to investigate the weak nonlinear modulation of the stress wave on the wall of a fluid-filled elastic circular tube.
应用薄壳弹性理论及流体力学基本方程,给出了圆柱壳在流体中流固耦合问题的基本关系式。
The basic fluid-solid interaction formulas for a shell in fluid are given using elasticity theory of thin shells and fundamental equations of fluid mechanics.
含流体孔隙各向异性介质中的弹性波传播问题是目前石油勘探和地震学研究的难点之一。
The issue of elastic wave transmission in anisotropic fluid-filled pore medium is one of difficulties in current petroleum exploration and study of seismology.
提出了处理粘性流体晃荡与弹性结构相互耦合作用的理论及相应数值计算方法。
A theory and a corresponding numerical technique to deal with the coupled interactions between the liquid sloshing and the elastic structures are presented.
数值计算表明土骨架和孔隙流体的加速度对粘弹性海床动力响应的影响极小。
Numerical results show that the accelerations of soil matrix and porous fluid have little effect on the dynamic response of viscoelastic seabed.
研究倾斜荷载作用在黏性流体与热弹性微极蜂窝结构固体界面上时,荷载倾斜角的影响。
The effect of Angle of inclination at the interface of a viscous fluid and thermoelastic micropolar honeycomb solid due to inclined load is investigated.
该系统包含了流体力学和弹性力学两个领域的知识。
The knowledge of aerodynamics and elasticity is involved in this system.
利用粒子图像测速仪(PIV)对圆筒形容器内有自由表面变形的粘弹性流体旋转流动进行了实验研究。
By using a particle image velocimetry (PIV), an experimental study was performed on the swirling flow of viscoelastic fluid with deformed free surface in a cylindrical container.
数值结果表明,流体的粘弹性越高,微观波及效率越高。
Numerical results show that higher viscoelasticity, the larger microscopic sweep efficiency of the fluid.
在对粘弹性流体进行分析时,用到了微分型的和积分型的本构方程。
Differential and integral constitutive equations were used to analyse viscoelastic fluid.
用波数-频率谱传递函数表征包括弹性板和流体负荷在内的整个系统的特性,导出了噪声场互谱函数的一般表示式。
Using the wavenumber frequency transfer function to describe the whole system consisting of the plate and the liquid loading, a general expression of the cross spectrum was derived.
目前粘弹性流体的微观驱油机理研究还处于探索阶段,并未得到完全的证实。
So far the research on the mechanism of viscoelastic fluid's micro-displacement is still in exploration and in lack of full certification.
目前粘弹性流体的微观驱油机理研究还处于探索阶段,并未得到完全的证实。
So far the research on the mechanism of viscoelastic fluid's micro-displacement is still in exploration and in lack of full certification.
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