After analyzing the mechanism of the sand entry of perforated well, based on the theory of linear elasticity and considering the effect of temperature-change stress and drag force of the fluid flow through porous medium, a new model for forecasting the sand production of perforated well is established.
针对此问题，分析了射孔完成井的油层出砂机理，以线弹性理论为基础，以Fairhurst推导得到的井眼周围应力分布表达式为依据，得出射孔孔眼周围的应力表达式及射孔孔眼壁上任意位置的周向有效应力表达式，同时考虑变温应力和流体渗流作用的拖曳力影响，建立了一种新的射孔完井出砂预测模型。
We established heterotopic partial liver transplantation models in pigs which transplanted at right subhepatic space, two livers blood flow was limited by partially constraining host portal vein and to investigate the change of ODER when the Liver was atrophic caused by insufficient portal blood flow.
建立猪右肝下部分肝移植模型，动脉血供相同，部分缩窄宿主门静脉控制两肝门静脉血流，观察入肝血流量对移植肝或宿主肝的影响，检测血清中自由基的变化。
In this paper, a CFD modeling methodology is established to simulate the gas flow and dispersed liquid flow as well as the mass transfer process in RPB.
本文采用计算流体力学的方法对超重力旋转床中的气液两相流体流动和传质过程进行了深入的数值模拟研究。
The multi phase flow interior ballistic model for grain and stick propellants are established, a practical engineering software system is completed.
建立了粒状药与管状药组成的混合装药的多相流内弹道理论模型，编制工程实用的软件系统。
Based on the heat balance equation of snow surface and the periodic variations of temperature field and heat flow, the Fourier model of snow surface is established.
根据雪面温度域以及热流的周期性特点，在雪地表面热平衡方程的基础上，建立了雪面辐射温度的傅里叶模型。
On the basis of the established welded casing finite element model of large scaled axial flow compressor, contact problems between step surface of linking bolt and flange surface of upper casing and between upper and lower casing flange surfaces and pre-tightening problem of bolt have been processed. Analytical calculation was carried out on the model by applying the finite element analysis software.
在建立大型轴流压缩机焊接机壳有限元模型的基础上，对联接螺栓台阶面与上机壳法兰面和上下机壳法兰面之间的接触问题，以及螺栓的预紧问题进行了处理，应用有限元分析软件对模型进行了分析计算。
Navier-Stokes equation is used to describe the fluid flow in fracture-cave reservoirs, named as N-S model here, which is established via using filled karst cave digital model.
利用充填溶洞的数字模型，建立了以Navier-Stokes方程为控制方程的N-S模型，模拟溶洞内流体的流动，并将模拟结果同渗流模型进行了对比分析。
In the present work, a rotating platform has been established, and the experiment for investigating flow and heat transfer characteristics of the steam-water two-phase mixture flowing in a pipe positioned in radius direction of the platform, using electric heaters to heat the water to boiling, was conducted.
本研究设计搭建了旋转平台，采用电加热的方法对过载状态下径向水平管内水的流动及沸腾传热特性进行了实验研究。
On the hypothesis of isentropic flow and quasi-steady flow, a model of gas parameters in the storage chamber is established by a method of the lumped parameters.
在等熵流和准定常流假设条件下，采用集总参量法，建立了弹后高压火药气体通过小孔在弹体内气室与弹后空间之间流动的气体参数理论计算模型。
Was established in March 2004, for domestic small medium and large supermarkets, commerce, shops and other industries to provide comprehensive information flow solutions, the company independent development of commercial products Twinhead supermarket version of ERP management system, business Chain version of ERP management system, tourism hotel management system, hotel restaurant cash register systems, hospital charges management system, Invoicing management system, property management systems.
伦飞软件系统工程有限公司成立于2004年3月，为国内大中小型超市、商贸、专卖店等流通行业提供全面信息化解决方案，公司自主开发的产品有伦飞商业ERP超市版管理系统，商业ERP连锁版管理系统，旅游酒店管理系统，餐饮酒店收银系统，医院收费管理系统，进销存管理系统，物业管理系统等。
Firstly, systemic inertia tensor is established based on N moving-mass. Then, the model is built up under axis and radial moving-mass's framework, which consists of translational dynamics equation and rotational dynamics equation. The eight-DOF equation of the system based on the integrated moving-mass framework is set up. Finally, digital simulation shows that radial mass has obvious effect on exterior ballistic parameters, especially for deflective flow.
首先推导了N滑块体系下系统的惯量张量，以双滑块机构为物理模型分别建立了质心平动动力学方程和绕质心转动动力学方程，接着构建了完整的滑块机构设置下系统8自由度方程，最后进行了数字仿真，结果表明径向滑块运动对外弹道影响比较明显，特别是对偏流尤为突出。
Join us加盟我们Spirax Sarco Engineering Ltd, established in 1995, is a subsidiary company of Spirax Sarco UK group, committed to steam and other industrial flow control and applications, specialized in sales and services of related products.
斯派莎克工程有限公司成立于1995年，系英国斯派莎克集团下属公司。公司致力于蒸汽和其它工业流体的控制和应用，专业从事其相关产品的销售和服务。
Spirax Sarco EngineeringLtd, established in 1995, is a subsidiary company of Spirax Sarco UK group, committed to steam and other industrial flow control and applications, specialized in sales and services of related...
泰科电子是《财富》世界500强之一的企业，也是现今全球领先的电子组件、网络解决方案、海底通讯系统及无线系统供应商，公司设计、制造和销售的产品覆盖汽车、电器、航天航空和防御、通信、电脑及消费类电子等各个工业。
The mathematical model for two-phase flow and heat transfer of wet steam in exhaust pipe for a 600 MW power generating unit with direct air cooling is established.
建立了600 MW发电机组直接空冷排汽管道内湿蒸汽两相流动和传热的数学模型。
Based on the fuzzy control method, a transient aerodynamic heating simulation control system for missiles was established. It was demonstrated that quick dynamic control of acrodynamic simulation heating process according to the transient and continual change of heat flow on the surface of a flying missile body can be completed by using this control system.
将模糊控制方法应用于导弹瞬态气动加热模拟控制系统，使该系统能够按照导弹高速飞行过程中弹体表面热流的瞬态连续变化对气动模拟加热过程实施快速的动态控制。
The flow parameters, which controlled the heat transfer phenomena in the coolant channel of the piston, are identified; the experimental facilities and program will be established in accordance with the parametric conditions experienced by a real marine diesel engine. The experimental result for the flow within smooth-walled duct under the reciprocating motion will be used as the reference datum to assess the results for the study of heat transfer augmentation. As an attempt to enhance the cooling performance, the ribs will be installed in the coolant channels which flow was orthogonal mode for the piston moving direction. Finally, the results obtained for the tests with heat transfer augmentation devices will be compared with the smooth-walled test results.
本研究计画利用座标转换理论，对受到与往复运动正交方向之流场进行参数分析，建立控制此流场热传性能之参数后，模拟实际船舶主机运转时活塞之冷却情形并进行实验量测，作为评估活塞冷却之基准，然后应用现行已实用於工业界的技术，在与往复运动正交方向之圆形冷却通道中加装凸起物以增加热传效能并予以测量其热传系数及其相关之物理现象，据以讨论此流场受往复力之影响，在周向不同位置之热传情形以及其与平行於往复运动方向之流场的差异。
In Chapter 2, a general model of an irreversible fluid flow system is established, in which the linear and nonlinear fluid flow resistances and the friction forces with different types are taken into account.
在第二章中，建立不可逆流体流动系统的一般模型，模型中同时考虑线性与非线性流阻和不同类型的摩擦力。
Using the finite volume method, a plane 2-D flow mathematical model under the body-fitted coordinate system is established.
采用有限体积法，针对微弯分汊河段复杂的水流运动特点，建立了正交曲线坐标下的平面二维水流数学模型。
Based on the division of flow units with core data of fluvial reservoir, a model for evaluating reservoir parameters was established by using logging data obtained from flow unit constraining and core calibrating.
王京红1，侯连华2，吴锡令3，林承焰1（1。石油大学地球资源与信息学院，山东东营 257061； 2。
Some main results and innovation points are following:(1) Divided the groundwater flow system of Shihezi city and established the method to analyze the groundwater system characteristic in the arid area.(2) The total recharge of groundwater is 1.6732×10~8m~3/a, the total discharge groundwater is 2.0341×10~8m~3/a, the result of water budget is -0.3609×10~8m~3/a (3) The change processes of groundwater system show hydraulic head decrease, hydraulic head contours deflect, retreat toward to southeast and be form drawdown funnel in intensive exploitable area. The flow direction deflect a small angle and small scope, and hydraulic gradient diminish. The influence degree to groundwater system for exploiting becomes weak gradually from south to north.(4) Because the groundwater overdraft lead to groundwater water level descends continuously, the safety for water supply of city has been affected.(5)To study the distributive rate of cross-border aquifer, the 59.82% of river recharge flows to shihezi region in Manas river West coast.(6) Use of groundwater numerical model Restored groundwater natural state.(7) Put forward a new principle for groundwater exploitation in the study area, which controls exploitation by the certain rate of descent for realizing unified management and separated exploitation.
本文研究的主要成果及创新点有：(1)建立了石河子市地下水流动系统和分析干旱区山前地下水流动系统特征方法；(2)研究区地下水总补给量为1.6732×10~8m~3/a，地下水总排泄量为2.0341×10~8m~3/a，均衡差为-0.3609×10~4m~3/a，为负均衡；(3)地下水流场的演变主要表现为地下水位下降，等水位线向东南偏转、后退和在集中开采区形成降落漏斗，地下水流向发生小角度、小范围偏转，地下水水力梯度变小，人工开采对地下水流场的影响程度由南到北逐渐变弱；(4)由于地下水超采，水位持续下降，已影响城市供水安全；(5)开展了跨边界含水层地下水分水比例定量研究，玛纳斯河河道入渗补给量的59.82%径流到了西岸石河子地区；(6)利用已建立的地下水数值模型反演，重建了地下水自然循环状态；(7)提出了研究区新的地下水开采原则，即以一定的下降速率(不同规划水平年的地下水位)来控制地下水开采量，实行统一管理，分散开采