And the modified initial flow method is adopted to deal with the free surface of unconfined seepage. Finally, the above method is applied to the fractured rock bank slope of a reservoir. 对建立的耦合模型采用四自由度全耦合法结合有限元数值方法直接求解,对无压流中自由面的处理则采用固定网格法中的改进初流量法。
For continuous seepage in porous media, the free surface of seepage can be determined by initial flow rate method. 在地下水流分析中,渗流自由面位置的确定至关重要。
It deals with lots of factors from the process of networks modeling, node demand calculation, initial flow distribution, and the optimal design to the drawing of pipe networks and isopiestic line. 给水管网优化系统是一个比较复杂的系统,包括建立管网的物理模型、计算节点流量、分配初始流量、确定初始虚流量、优化计算、绘制管网图及等压线图。
Loose soils in a sloping debris flow channel become initial debris flow mass ( IDFM) through strength attenuation and creep after absorbing water from precipitation. 泥石流沟内松散物质(岩土体)在降雨作用下,由吸水→强度衰减→蠕变而构成初始泥石流体,形成机制包括降雨冲击机制和吸水软化机制。
A good initial flow definition implementing just the navigation rules above ( and no behavior yet) is shown below 一个很好的针对上面导航规则的初始流转定义实现如下
The detailed process flow card, which can be adopted directly in practice, is finally generated after optimizing and setting process parameters for each step in the initial flow. 工艺步骤串连缀而成的初始工艺流程,经过一定的优化与适配工艺条件的之后,产生出在实践中能够直接使用的、详细的工艺流程卡。
By means of the computational results, the effects of initial flow velocity and air ratio on the pressure gradient in pipe are analysed. 通过求解不同流速与不同掺气量时的短管内压力变化结果,分析了初始掺气率和水流流速对短管内压力坡降的影响;
This paper stimulated initial flow distribution of gas distributor and liquid distributor in large tower using CFD software FLUENT, researching their influencing factors from complicated kinestate of fluid and finding modified methods. 本文借助计算流体力学(CFD)软件FLUENT来模拟大型填料塔气体分布器、液体分布器流场初始分布、从复杂的流体运动状态中考察其影响因素,探索改进之方。
Initial Pipe Diameter Selection with Initial Flow Distributed by Smallest Growing Groove Method 最小生成树丛法分配管网初始流量的管径初选
In the process of optimal design of water supply networks, this paper puts forward a new method which processes network optimization by a basic related matrix only, including node demand calculation, initial flow distribution, and finally optimization. 在管网优化计算中,文章提出只用一个基本关系矩阵进行大型复杂管网优化设计的新方法,包括管网节点流量的计算、管段流量的初始分配和管网的优化计算。
Initial flow of viscoelastic fluids in a cylindrical pipe 粘弹性流体在圆管中起动流动的规律
In the process of optimal design of water supply networks, we can depend on computers in node demand calculation, initial flow distribution, and finally optimization. 在管网的优化计算中,编制了一套完整的计算程序,包括管网的节点流量的计算、管段流量的初始分配和管网的优化计算。
The Mesh Generation of Hydrogeology Finite Elements and a New Method of Initial Flow Field Determination 地质有限元网格的自动剖分及确定初始流场的新方法
For branch network, initial flow and initial pressure drop are distributed, and initial pipe diameters are selected. 对枝状管网分配初始流量和初始压力降,从而初选管径。
On the basis of defining energy dissipation ratio in a closed circular conduit as specific energy loss of hydraulic jump divided by specific energy of initial flow, this paper derives a basic equation for calculating this energy dissipation ratio and describes its characteristic. 在定义管道内水跃的消能系数为水跃单位能量损失与跃前断面水流原有单位能量的比值的基础上,推导出计算消能系数的基本公式,并分析了它的规律性。
The effects of the initial flow condition and nozzle size on the performance such as output power, specific power and chemical efficiency of the CW HF chemical laser are also calculated. 考察了光腔入口的气流初始参数和喷管尺寸对HF化学激光输出功率、比功率和化学效率等性能的影响。
In the behind of narrow region, the theoretical curves of initial flow separation point, separation and re-attachment points with Reynolds number are more consistent with the past experimental results. 在舒张区域,理论计算的初始分离点、分离点和再附着点随雷诺数的变化更接近过去的实验结果。
Taking the advantage of numerical simulation that can simulate the different types of boundary conditions, the vertical vortex induced by the asymmetric initial flow is simulated too. 运用数值模拟具有能模拟各种不同边界条件的优势,还对非对称来流条件下形成的立轴旋涡进行了模拟。
Numerical Simulation of Initial Flow of Wedge Entry 楔形体入水初期流场的数值模拟
From the distribution of initial flow, the optimal calculation of pipe networks and the drawing of the figure on equal hydraulic pressure line, they are connected with each other, if anyone of them is ameliorated, it will improve the total effect. 从初始流量分配、管网优化计算到等水压线图的绘制,这三部分是密不可分的,任何一部分的改进与完善都有利于整体优化效果的提高。
In initial flow distribution, make use of method of the minimum square summation, taking into account the length of pipe. 在初分流量部分,采用最小平方和方法,并考虑管长因素。
The transient flow through a pipe orifice starting from an initial steady flow has been studied via numerical analysis. 该文对初始稳定流开始的液流通过节流孔的过渡过程进行了数值解析计算。
This paper provides analyses and discussion of ice jam stages with variation in ice discharge and initial flow depth and velocity in straight and curved channels based on the data from the experiment and the field observations at the Hequ gauge station of the Yellow River. 依据实验室资料和黄河河曲段的实测资料,针对直道和弯槽,对比分析了不同冰流量、不同初始水深和流速时模拟冰塞和天然河道冰期水位的变化规律。
The main contents of the dissertation are given as follows: 1. The determinate finite element analysis has been done to 3-D steady seepage using modified Initial Flow Method ( IFM). 采用改进的初流量法对三维稳定渗流进行了确定性有限元分析。
The Study of Initial Flow Field over Two Impulsively Started Circular Cylinders 突然起动双圆柱绕流初期流场的研究
Results ① Filter would affect the blood flow of carotid artery. Statistical analysis showed that the initial pressure of the artery, initial flow volume and number of thrombi were the factors that would influence the flow after deployment of the filter. 结果①滤器置入后颈动脉血流减小受颈动脉初始压力,初始流量及病灶脱落栓子数的影响(P<0.001);
There was a decreasing trend in each pollutant concentration with rainfall duration and finally tends to flat. So we collect the rainwater after abandoning part of the initial flow of rainwater. 并且各污染物浓度均随降雨历时呈减少趋势,后趋于平缓,可采用弃流部分初期雨水后进行收集。
The Alfven layers are located in the narrow region where the initial flow velocity equals to the local Alfven speed and move away from the reconnection region slowly as the island develops. 共振层位于初始流速度等于当地Alfven速度很窄的范围内。随着磁岛的发展,这对共振层慢慢远离重联分离线。
The seepage free surface of fracture network is solved by using the modified initial flow method. Then, the reliability of the program is verified by comparing the numerical and analytical solution. 4. 最后应用改进的初流量法,编制程序求解裂隙岩体网络渗流自由面,并与解析解相比较,验证了该程序的可靠性。