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- unsteady flow pumping test 非稳定流抽水试验
- Determination of hydraulic parameters by an unsteady flow method based on measured data from single-well steady flow pumping tests 基于单孔稳定流抽水试验观测值的非稳定流求参方法
- Applying Single-hole Steady Flow Pumping Test to Evaluate Hydraulic Properties of Basement Rock Aquifers around Liuzhuang Western Weathering Shafts 利用单孔稳定流抽水试验评价刘庄西区进回风井基岩段地下水径流条件
- During oil production, pumping rod is eccentric in the long oil tube, in which flow of the swabbed fluid can be regarded as an unsteady flow of second-order fl. 在采油过程中，由于油井较深的缘故，抽油杆在油管中是处于偏心位置的，可以把聚驱井抽汲液在井筒中的流动视为二阶流体在内管做轴向往复运动的偏心环空中的非定常流动。
- In this paper a model test is reported about the research of unsteady flow within the tailrace tunncl of an underground hydropower station. 本文利用模型试验的方法,对采用施工导流隧洞代替地下力水电站的尾水隧洞,进行非恒定流的试验研究。
- When is a Flow Compressible [For Both Steady and Unsteady Flow]? 什么时候流动是可压缩的[对定常和非定常流来说]?
- Once producing by socker rod pump, the velocity and pressure of liquid are changing with the time in unsteady flow. 在有杆泵抽油生产条件下,流体的速度和压力都随时间变化,处于非稳定流动状态。
- The flow in the drainage pipe network is simulated by one-dimensional unsteady flow theory, and the calculation of the pumping stations, the water gates and submersed pipes is indicated. 采用一维非恒定流方程模拟地下排水管网内的水流，并给出泵站、闸门、淹没出流管道等排水系统的处理方法。
- It describes unsteady flow toward a discharging well in an extensive aquifer. 它描述位于广阔含水层中的抽水井的非稳定流。
- Unsteady flow characteristics in a centrifugal pump volute were investigated by using duel time stepping method in the numerical simulation. 摘要采用双重时间步方法对一离心泵内部的液体非定常流动进行了数值研究。
- By the model test with model hydro turbine and generator units, on the condition of the steady flow, unsteady flow, and the flow state in the tailrace tunnel with sloping ceiling is understood. 小波动条件下变顶高尾水洞体型对机组运行稳定性的影响;
- This applies to small flow pump high pressure infusion system. 此泵适用于小流量、高压力的输液系统。
- Additional visual observations are usually in order to establish the advent of unsteady flow, intermittent stall, and full stall. 通常采用另外一些目视法来确定非常定流断续失速和全失速的出现。
- Thus, a new approach was available to utilize the potentiality of intrinsic unsteady flow. 为固有非定常潜能的利用提供了一类新途径。
- A large scale of abstracting and pumping test in the groundwater sources area of the Jily was in troduced. 摘要本文介绍了洛阳吉利区黄河滩白坡水源地地下水大型开采抽水试验。
- The governing equations are the usual Navier-Stockes equations for the unsteady flow. 推导了控制方程在特定坐标系空间的表达,给出了适当的边界条件。
- In the case of over-penetration, unsteady flow structures are induced by impinging between the opposing jets. 在射流过度穿透条件下，异向射流的碰撞引起非定常流动结构；
- Calculate aquifer properties based on pumping tests. 利用抽水试验数据计算含水层的导水性质.
- Dual time-stepping approach in conjunction with LU-SGS implicit method was used to solve the unsteady flow fields. 非定常流场计算采用了双时间步法与LU-SGS隐式解法耦合的方法。
- This paper presents the definition of the pumping test net and its optimum design, the basic principle of the design and the mathematical model. 文中提出了抽水试验网及其优化设计的定义,网优化设计的基本原理以及数学模型。
