查询词典 siphonic

In this paper a new model has been offered.This model is base on the method of simulating the section of siphonage with spilling surge tank.And then dynamic simulate models of the siphonic pump station system was offered.

虹吸式泵站虹吸断流模型的建立是复杂引水提水工程动态仿真中的重要问题，本文提出了建立仿真数学模型的方法------虚拟控气溢流式调压井模拟法。

The quality control points in installation and construction of the siphonic rainwater drainage system were summarized from experience of project management.

通过对虹吸式雨水排放系统的监理实践，总结了其安装施工的质量控制要点，并介绍了某工程中虹吸式雨水排放系统的排水能力测试方案及分析计算。

The test scheme and analytical calculation of drainage capacity of siphonic rainwater drainage system in a project were presented.

并介绍了某工程中虹吸式雨水排放系统的排水能力测试方案及分析计算。

The siphonic system is make use of the altitude difference between the height of buliding and the draining point on ground.

自虹吸技术在欧洲诞生以来，已历经三十年的发展历程。

The siphonic roof rainwater drainage system ha s found wide application in domestic medium- and large-scale projects.

虹吸式屋面雨水排水系统已在国内的大、中型项目中广泛应用，笔者就虹吸满管流的定义、设计重现期、虹吸系统中的水流流态及适用的计算公式、悬吊管的最小安装高度、自清流速等争议较大的热点问题进行了探讨。

To ensure the heightening engineering of tailing dam to successfully carry through, siphonic drainage system was adopted to lower the phreatic line in the dam.

为保证尾矿坝加高工程的顺利实施，采用虹吸排渗系统来降低坝体内部的浸润线高度。

The siphonic wells are placed at upstream of primary dam with the height difference of 8 m to downstream.

虹吸井设置在初期坝上游附近，相对下游高差为8m。

It reach to siphonic resulation based on negative pressure of the pipe.

虹吸式屋面雨水排水系统利用建筑物标高与地面排水点产生的高差势能，依靠管道中的负压作用形成虹吸现象，从而达到快速排出屋面雨水的目的。

Tailing pond of Malanzhuang Iron Ore Mine was as the example to introduce the constitute of the siphonic drainage system and the construction technique of siphonic well in tailing sand.

以马兰庄铁矿尾矿库为例，对尾矿库工程中虹吸排渗系统的组成和尾矿砂中虹吸井的施工方法进行了简要介绍。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结，并分析了虹吸式排水系统的优势；再对虹吸式排水管道进行原型试验研究，采用不同管径不同立管高度，对系统流量、管道压强进行量测，观察了各种工况下的流态，对其水力特性进行研究分析，找出影响水力特性的落差、管径主要因素以及与排水量的关系；进一步应用计算流体力学Fluent软件，采用标准κ-ε模型与RNGκ-ε模型，计算过程应用有限体积法和二阶迎风格式对数值模型进行离散，速度和压力的耦合采用SIMPLE算法，分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析，通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究；本文首次采用结合原型试验与数值模拟相结合的方法，对虹吸式屋面雨水排水系统进行研究，试验与模拟相互验证，并进行拓展，很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题，结果正确合理，为排水管网系统设计和优化研究提供了有效的方法，对工程设计有较好的参考价值。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐