查询词典 discrete flow

Third, the discrete pressure-flow model using the pattern of graph automaton has been established based on the discrete model of plant vascular system.

更多生长阶段的隐含状态，并将隐含状态及其转移关系通过构建二维层次自动机的方式转换为植物的生长规则。

The status of the flow in manifold systems will directly affect the efficiency and security of an exchanger. With the help of discrete model, the characteristic of the flow in manifold systems will be got.

流体在并联管组换热器中的流动状况将直接影响到换热器运行的效率和安全性，通过离散模型计算方法可得到流动工质在并联管组内的流动特性。

The calculated results of the discrete model accord with the experimental data well. Compared with a simple continual model, the discrete model is true of the characteristic of the flow in manifold systems, and it also shows the availability of the way to use BP neural networks to measure the key coefficient of the discrete model.

通过离散模型计算得出的结果与实验数据符合良好，说明与简化的连续模型相比，离散模型是一种更为符合并联管组流动特性的理论模型，同时也表明了用BP算法来确定离散模型关键系数的有效性。

The discrete velocities are connected by Delaunay grids to form referring region, and the error vectors in the discrete data can be distinguished, corrected and interposed by continuity principle of flow.

2针对PIV数据错误矢量进行识别、修正与插值方法进行了研究，通过Delaunay网格将离散的各流速点连接起来，形成参考区域，利用流体的连续性原理实现了离散数据中错误矢量识别、修正与插值。

The main objective of this dissertation was to develop methodologies with capability of engineering application for simulating flow in fractured rock using discontinuum models. The study work includes three parts. In the first part, numerical methodology of three-dimensional discrete fracture network model casing on hybrid BEM-channel was presented, and the technique for improve the model's computing efficiency was also studied. Firstly in this part, computer simulation methodology based on the Baechermodel for generating network of discrete fractures was presented, which includes the follow details: probability distributions of fracture density,orientation, trace length, size, and aperture and estimation of their statistical parameters; stochastic models of fracture network; Monte-Carlo's simulation method; numerical simulation procedure and technicality.

给出了离散裂隙网络模型所依据的基本假定；发展了基于Baecher模型的离散裂隙网络计算机随机生成技术：详细地推导了单裂隙渗流和多裂隙相交网络渗流的边界单元法公式，发展了离散裂隙网络中稳态渗流的边界元数值技术，并且讨论了相关的具体数值技术细节，如角点的处理方法，单元的自动剖分等：描述了混合边界元—管流模拟方法及其数值实现；研究了裂隙网络的简化方法，并针对裂隙网络边界元法的特点提出了一种改进的分块三角分解法。

For instance, the first prize winner-Investigation Study on Urban Traffic Flow Discrete pattern in China submitted by Beijing City Planning Institute analyzes the pattern of urban traffic and proposes a discrete pattern suitable for China.

如，获得一等奖的北京城市设计规划设计院的《我国城市道路车流离散规律初探》研究了我国城市道路交通流的离散规律及其影响因素，提出了适合我国的交通特点的离散系数

For instance, the first prize winner-Investigation Study on Urban Traffic Flow Discrete pattern in China submitted by Beijing City Planning Institute analyzes the pattern of urban traffic and propose s a discrete pattern suitable for China.

如，获得一等奖的北京城市设计规划设计院的《我国城市道路车流离散规律初探》研究了我国城市道路交通流的离散规律及其影响因素，提出了适合我国的交通特点的离散系数

In this paper, no-wait flow shops scheduling problems for a mixed discrete particle swarm optimization, through the establishment of the location of the vector encoding and scheduling program of mapping relations between the continuous particle swarm optimization algorithm is applied to discrete no-wait flow shops scheduling problem.

针对无等待流水线调度问题提出了一种混合离散化粒子群优化算法。通过建立位置矢量编码与调度方案之间的映射关系将连续的粒子群优化算法应用于离散的无等待流水线工件调度问题。

Based on such research, new discrete model of groundwater flow in fractured networks was developed according to the feature of directional flow in singlefrac ture, This model is equal to the reflection of natural fracture systems.

该模型不仅能反映出裂隙系统结构的极不均匀性，还能表现出渗透水流的各向异性和非连续性以及裂隙水偏流效应。

Based on the analysis of physics course of heat transfer, the mathematical model of single-phase flow in the rectangular narrow channel is proposed. And the boundary conditions are given to get the unique numerical result. The finite volume method is used to found the discrete scheme of equations. According to the flow of SIMPLER arithmetic, the computing program is developed and the correctness of program is validated.Then the program is used to solve the problem of flow and heat transfer in rectangular narrow channel.The stable two dimension velocity and temperature fields in rectangular narrow channel and plate fuel are obtained.

在明确窄缝流道及燃料板换热物理过程的基础上，建立了描述矩形窄缝内单相流动与换热问题的数学模型，并给出了合理的边值条件；然后利用有限容积法对方程进行离散，根据SIMPLER算法的流程编制了模型求解程序；在验证程序正确性的基础上，对矩形窄缝流动与换热问题进行了求解，得到了矩形窄缝流道和板状燃料元件内部温度场、速度场的二维分布。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。