Modulation techniques for transmitting digital information in which that information conveyed by selecting discrete phase changes of the carrier. 借助所选择的离散的载波相位变化来传输数字信息的调制技术。
Using a discrete phase model of FLUENT-software, the flow field and the track of the ash in the centrifugal blower were simulated. 利用FLUENT软件,通过离散相模型对离心风机中固体颗粒的轨迹进行了数值模拟。从而定性模拟了固体颗粒在风机内的运行轨迹。
Fractal characterization of uniformity of discrete phase in nanocomposites 纳米复合材料分散相分散均匀性的分形表征
Experiment Study on the Effect of Discrete Liquid Phase for Vortex Street Flowmeter Measuring Error 离散液相对涡街流量计测量误差影响的实验研究
Considering the characteristics of the geometrics surface of discrete phase a non-linear interpolation algorithm is designed to make the interpolated contour points more appropriate. 并根据离散相外形特点,提出并设计了一种层间非线性插值方案,使插值层的轮廓点更为合理。
In view of an annular sub-aperture stitching algorithm based on discrete phase data, and accuracy evaluation criterion, numerical simulation and analysis for several main influencing factors such as random noise, high-order noise, overlapping width and sub-aperture number are carried out. 针对一种基于离散相位值的环形子孔径拼接算法,从精度评定判据入手,对随机噪声、高阶噪声、重叠区宽度及子孔径数目这几个主要影响因素进行了数值仿真分析。
The cluster motion, collision, break-up and reforming models are then obtained by treating particle cluster as one discrete phase. 将颗粒团作为离散相,研究颗粒团的运动、碰撞、破碎与合并。应用上述模型数值模拟了循环流化床内的稠密气固两相流动。
Reynolds Stress Model with wall function was adopted to calculate the liquid-phase flow, and Discrete Phase Model was chosen to trace trajectories of solid particles. 采用雷诺应力模型和壁面函数法模拟流体流动,采用离散相模型跟踪颗粒运动轨迹。
The geometrics surface of discrete phase is reconstructed by contour connection, using triangular patchs. 用三角面片对离散相各轮廓点列进行轮廓拼接,重建出离散相的三维形态。
3-D Computation of Flow Field and Particle Trajectory of Discrete Phase of Centrifugal Slurry Pump 渣浆泵内清水流场及离散固体颗粒轨迹的模拟与研究
Study on the behavior of discrete phase in the electric field 电场作用下离散相行为研究
When the computation is converged, the discrete phase injection is set in the inlet of the simulation model and the solid particle is tracked by the uniphase coupling model. 当气流场的计算收敛以后,在进口处设定离散相射源,利用单相耦合法跟踪固体颗粒的轨迹。
It also discusses on this paper the performance of second water droplets on the rotor blade by adopting Discrete Phase Model. 同时本文针对上述几何结构特点,采用离散相模型(DPM)单独讨论了二次水滴在除湿级单个动叶片以及整级结构的运动情况。
In this paper we study a discrete-time repairable queueing system with Markovian arrival process. Provided that the lifetime of server follows a geometric distribution, the service time and the repair time follow a discrete phase type distributions. 本文研究了具有马尔可夫到达过程的离散时间可修排队系统,假定服务台寿命服从几何分布,服务台对顾客的服务时间和服务台的修理时间均服从离散位相型(PH)分布。
Study on the Discrete Phase Concentration Measurement of Two phase Flow 两相流离散相浓度测量新方法的研究
Based on flow imaging technique, a new method for the discrete phase concentration measurement of two phase flow using capacitance array sensor is proposed. 本文提出了一种基于流动成像技术测量两相流离散相浓度的新方法。该法以阵列式电容传感器为信息获取手段。
Taken converter gas for continuous phase and spraying droplet for discrete phase, three-dimensional unsteady mathematic model for temperature decreasing of gas with spraying in Venturi tube was established, taking account in the interaction between continuous phase and discrete phase in mass, momentum, and energy. 视烟气为连续相,喷射液滴为离散相,考虑连续相与离散相在质量、动量和能量的相互作用,建立了转炉烟气文氏管喷淋降温三维瞬态数学模型。
Obtained numerical simulation results of three types of pulverization chamber flow field consisting of the gas phase and discrete phase. 对三种不同结构雾化室流场进行数值模拟,获得了包括气相和离散相在内的流动特性计算结果。
In order to clarify the effects of the electric field on the discrete phase in a two-phase system, the numerical and experimental studies of a single discrete applied a uniform electric system have been made in this paper. 为明晰电场对两相系统中离散相的作用,本文针对均匀电场作用下两相系统中的单个离散相的行为进行了可视化试验研究及数值模拟。
Visualization in Two-phase Flow can attain two/ three dimensional monitor enclosed pipe, which is realized by 3D reconstruction with discrete phase in two-phase flow. 两相流可视化目标是实现对封闭管道内物场运动状态的二/三维可视化监测,并从图像中提取特征参数进而参与过程控制。
A mathematical model was established to predict the electric field distribution around a single discrete phase in two-phase system applied uniform electric field. 针对均匀电场作用下两相系统中的单个离散相周围电场分布情况,建立了数学模型。
The standard turbulent model and SIMPLE model of gas phase and the Discrete Phase Model ( DPM) for particle motion were used to describe the two phase flow. 将固相作为离散相体系,采用离散相模型(DPM)的非偶合法追踪颗粒运动轨迹。
We first consider the generalized service time and proved that it is a discrete phase type variable. Then we obtain the steady state distribution of queue lengthened. 首先我们考虑广义服务时间,证明它是离散PH变量,然后运用矩阵几何解理论,我们给出了系统的稳态队长分布。
The Solution of the Equation Determining a Signal by Discrete Phase 由离散相位确定信号的方程的解
The process of kerosene atomization and evaporation are simulated by using discrete phase mode, and the combustion is computed through the mode of finite-rate/ eddy-dissipation turbulence-chemistry interaction. 文中采用离散相模型模拟煤油液滴的雾化蒸发过程,有限速率涡耗散的单步反应模型模拟煤油燃烧。
One-way coupling is used for the numerical calculation on the two-phase flow, random orbit model is used for discrete particle phase. 在连续相流场趋于稳定时,加入离散颗粒相,进行气粒两相流的数值计算,对气固两相流动采用单向耦合的方法,对颗粒运动模型采用随机轨道模型。
Based on flow field simulation, moving behavior of particles in the classifier was simulated with discrete phase model, which predicted tracks of particles of different sizes, and the feeding system was improved. 在气相流场模拟的基础上,用相间耦合的随机轨道模型预测了不同粒径颗粒的运动轨迹,并对布料装置进行了结构改进。
Besides, the influence of the presence of solid particles on the cavitating flow is analyzed by considering the interaction between the discrete phase and continuous phase. 同时,考虑了固体颗粒相与空化流场间的相互作用,分析了颗粒的存在对空化流场的影响。
Using GAMBIT software to build three dimensional numerical mode of a media and combining with the corresponding discrete phase, we solved the model by using FLUENT software that based on the air and water flow stat of the media. 利用GAMBIT软件建立了填料的三维数值模型,根据填料内水和空气的流动状态,采用FLUENT软件,结合相应的离散相模型进行求解。
First adjustable transformer tap and capacitor banks are optimized by PSO; then generator reactive power output is optimized by interior point method with discrete variable not changed, and then return to the discrete optimization phase, iterate like this until the program converges. 先用粒子群算法实现对变压器和电容器组的优化;然后保持离散变量不变,采用内点法实现对发电机无功出力的优化,再返回离散优化阶段。