Leakage is the main form which influences dyke safety severely, so to determine the position of the leakage passage is the precondition and base of dyke repair. 渗漏是严重影响堤坝安全的主要形式,确定渗漏通道的位置是进行堤坝渗漏整治的前提和基础。
With the flow analysis of near surge condition, tip injection and bleeding are utilized to interact on tip leakage vortex and passage shock and the corresponding influences are investigated. 针对近喘振工况压气机顶部流动的特性,对间隙涡和通道激波进行顶隙吹吸干涉,分析了顶隙吹吸对该压气机特性的影响。
State of the Art of Leakage Flows in Through-Flow Passage of Axial Turbomachinery and Their Flow Controlling Technology 轴流透平机械通流部分泄漏流动及其控制技术研究进展
To Solve Air Leakage Problem of High Pressure Oil Passage by Local Pressurization 用局部加压方法解决高压油道漏气问题
There are condition, limitation and multi-results with the traditional detection methods, which are based on geophysical exploration. Especially the traditional detection methods are helpless when dealing with the leakage passage, whose depth of burial is great while spatial sizes are small. 传统的基于地球物理勘探手段的渗漏探测的各种方法,由于都有其条件性、局限性和多解性,特别在埋深大而空间尺寸相对小的渗漏通道探查方面显得无能为力。
With an ancillary evacuation system provided, leakage detection was conducted for longer fluid passage with a helium mass spectrometer. 配置辅助真空抽气系统,对较长的流体通道进行氦质谱真空检漏。
Water leakage from the reservoirs mainly follows the passage, which is formed by connection of the fracture structure outward extending with the strongly weathered zone. 库水外渗主要沿通往库外的断裂构造与强风化带连通形成的渗漏通道渗漏。
3-D Turbulent Characteristics of the Tip Leakage Vortex inside an Axial Compressor Rotor Passage at a Low Mass-Flow Condition 轴流压气机小流量状态转子叶尖泄漏涡三维紊流特性
Detection of leakage passage in fissure rock with assumptive heat source method 虚拟热源法研究坝基裂隙岩体渗漏通道
The piping leakage passage can be regarded as a continuous line heat resource. Through studying the influence of piping water on strata temperature, a continuous line-heat-resource model is proposed by using the heat resource theory. 堤坝的管涌渗漏通道可看作是一个持续作用的线热源,通过研究管涌渗漏水对地层温度的影响,利用热源法的原理建立了管涌渗漏的持续线热源模型。
The results shows: the scale of top blade clearance is closely relative to the strength of leakage flow and distribution of tail trace position in passage, the leakage flow and passage vortex interaction has seriously affected the flow field distribution of inner passage. 结果表明:叶顶间隙的大小与泄漏流动的强度和通道内的尾迹区位置分布密切相关,泄漏流动与通道涡的相互作用严重影响了通道内的流场分布。
The hub leakage flows were modeled and calculated in two different ways: the flow fields inside hub axial gap were calculated together with blade passage flow in an integrated manner, and the leakage flows due to the hub axial gap were modeled as inlet boundary conditions. 计算时分别采用了两种模化途径,即耦合求解转子上游叶根间隙内空腔与转子通道内的流场,以及求解将叶根间隙模化为进口边界的转子流场。
There will be lots of observational data in the field experiments, the temperature data in the other bores at the same elevation of the leakage passage is selected and curve fitted under the logarithmic equation model. 而现场测试试验中有大量温度观测数据,提取与渗漏通道同一高程其它钻孔的温度值,并将这些实验数据在对数函数理论模型下进行曲线拟合,从而可以计算出渗漏通道半径。
The paper theoretically puts forword a new conception of the gob area air-leakage passage, in which the leaking passages are classified into. 本文从理论上提出了采空区漏风通道的新概念,将其分为能自燃漏风通道、不自燃小漏风通道、不自燃大漏风通道3种。
The wake is mixing with the last rotor tip leakage vortex in the stator passage, leading to more substantial fluctuations in the flow field. 转子尾迹在静子通道内追赶上从前一转子叶片通道内下来的叶尖泄漏涡,二者的相互作用和掺混导致静子尖区更为复杂的二次流动。
When the impacting point of shock on suction surface locates behind the minimum pressure, secondary leakage flow distorts the passage shock directly, otherwise, leading edge leakage flow effects much upon the passage shock wave. 当激波位置在该点之后时,二次漏流直接冲击激波结构;当激波位置在该点之前时,激波结构基本只受前缘漏流的影响。
The research of determining the seepage value in the concentrative leakage passage of the dam by the tracing experiment 示踪试验测定大坝集中渗漏通道渗漏量的研究
Backflow, separation and vortices result from hub leakage lead to a complex flow structure near hub in the stator passage. 由泄漏流引起的回流、分离和旋涡等使静子中靠近轮毂处流场十分复杂。
The results show that the rotor tip leakage vortex and the rotor wake periodically pass through the tip region of a stator passage, resulting in periodical flow blockages and fluctuations in the stator passage. 结果表明,转子叶尖泄漏涡和转子尾迹周期地扫过静子通道尖区,导致该区出现周期性的流动阻塞和脉动。
The rock fissure network is simplified to concentrated leakage passage network including several branches and one main leakage passage. 将岩体裂隙网络简化为多个支流和一个主渗漏通道组成的集中渗漏通道网络。
The details of the interaction between leakage flow and passage secondary flow and the details of generation and development of leakage vortex were predicted under different clearance scale and the condition of both stationary and rotating hub. 对于不同的间隙尺寸,对于环壁静止与旋转的不同壁面条件,揭示了泄漏流与通道二次涡相互作用的细节,揭示了泄漏涡的生成与发展过程。
The concentrated leakage passage in fissured rock is studied with dummy heat source method. 利用虚拟热源法研究坝基裂隙岩体中存在的集中渗漏通道。
The reversing valve loss includes three parts: refrigerant leakage loss from high-pressure side to low-pressure side, pressure loss caused by the flow resistance of irregular flow passage, and heat transfer loss from high-temperature side to low-temperature side/ environment. 四通换向阀的损失包括四通阀内部高压侧制冷剂向低压侧制冷剂的泄漏损失、四通阀内部不规则流道产生的流动阻力压降损失、高温高压侧向低温低压侧及环境的传热损失三部分。