Description: This thesis aimed to eliminate tracking
error of traveling a circular profile on the CNC machine tools. Friction is one of the
most significant source of nonlinear disturbance for the motion control which caused
by the relative motion of different contact surface at the low velocity. The nonlinear
component of friction such as static friction (stiction) and the Coulomb friction should
be overcome so that the tracking error will be eliminated. When the X-Y tables are
tracking a circular profile, quadrant glitches appear at ninety degrees intervals, i.e. the
motion of one axis has a zero velocity crossing and reverses direction.-This thesis is aimed to eliminate tracking
error of traveling a circular profile on the CNC machine tools. Friction is one of the
most significant source of nonlinear disturbance for the motion control which caused
by the relative motion of different contact surface at the low velocity. The nonlinear
component of friction such as static friction (stiction) and the Coulomb friction should
be overcome so that the tracking error will be eliminated. When the X-Y tables are
tracking a circular profile, quadrant glitches appear at ninety degrees intervals, i.e. the
motion of one axis has a zero velocity crossing and reverses direction. Platform: |
Size: 685056 |
Author:tatos |
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Description: 这个算例采用格子Boltzmann方法模拟不稳定绕柱流的情况。在固体边界出采用反弹格式进行处理。-this example examines an unsteady flow past a cylinder placed in a channel. The cylinder is offset somewhat from the center of the flow to make the steady-state symmetrical flow unstable. At the inlet, a Poiseuille profile is
imposed on the velocity, where as the outlet implements an outflow condition:
grad_x p = 0. At Reynolds numbers around 100, an unstable periodic pattern is created, the Karman vortex street. Platform: |
Size: 4096 |
Author:李学斌 |
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Description: 声线绘制程序，要求在声线不碰海底、海面的情况下，根据所给的任意大洋声速剖面、声源深度和声线传播的水平距离，画出出射角从-10°到10°的20条声线在大洋声道传播的情况-Acoustic line drawing program, not touch the seabed under the conditions of the sea, according to any oceanic sound velocity profile, the sound source depth harmonies line spread horizontal distance in the acoustic line, draw angle from-10 to 10 20 sound ray propagation in the ocean channel Platform: |
Size: 226304 |
Author:赵波 |
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Description: A matlab code which calculates the velocity profile for a flow in a 2d channel using the lattice boltzmann method. Platform: |
Size: 2048 |
Author:MichaelRousis |
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Description: 本文根据我国西北地区的风频风能曲线，用最优设计攻角沿叶片轴线的非线性分布修正了传统Wilson算法，对大型水平轴风力机叶片的
气动性能进行了优化设计。该优化设计利用Matlab优化工具箱，优化速度干涉因子的迭代计算，可提高计算效率。从结构及加工工艺角度修正翼型，考虑了多翼型和变攻角等因素对叶片外形优化的影响。具体对1．2MW风力发电机组叶片外形的气动性能进行了计算和优化设计，所获得的气动性能结果表明了该优化设计的有效性和可行性。相关结果可为风力机叶片外形设计提供参考。-Based in Northwest China wind band wind energy curve, the non-linear distribution of the optimum design angle of attack along the blade axis Fixed Wilson algorithm, the optimal design of large horizontal axis wind turbine blade aerodynamic performance. The optimal design using Matlab optimization toolbox, optimizing the iterative calculation of the velocity interferometer factor, can improve the computational efficiency. Airfoil from the structure and processing angle correction, taking into account the impact of multi-airfoil and change the angle of attack and other factors on the blade shape optimization. 1.2MW wind turbine blade profile aerodynamic performance calculation and optimization design, the obtained aerodynamic performance results show that the effectiveness and feasibility of the optimal design. Relevant results for wind turbine blade shape design reference. Platform: |
Size: 2300928 |
Author:chentiange |
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Description: this script plots the velocity profile for user defined function.and user can generate multiple colour curves.suggestion included to do this. -this script plots the velocity profile for user defined function.and user can generate multiple colour curves.suggestion included to do this. Platform: |
Size: 17408 |
Author:Ved |
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Description: Blasius Equation for Boundary layer theory problems. For calculating the boundary layer thickness and the velocity profile in a free stream in a pipe. Platform: |
Size: 1024 |
Author:shekhar |
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Description: Keller box algorithm and equations for Boundary layer theory problems. For calculating the boundary layer thickness and the velocity profile in a free stream in a pipe. Platform: |
Size: 402432 |
Author:shekhar |
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Description: The evolution the speed of wind according to time is modelized by a function analytical or generated by a statistical law starting the data of measurement for a given site. In a context of theoretical modeling, the profile of wind must satisfy two criteria:
1) The duration of the profile must be limited to reduce the time of simulation
2) The profile of the wind must be representative of the characteristics of the deposit (intensity, variability, statistical distribution…).
In this study, we represented the evolution the speed of the wind, by a scalar function which evolves/moves in time, modelized in deterministic form by a sum of several harmonics. Profile of the wind simulated with a mean velocity of 8.2m/s.-The evolution the speed of wind according to time is modelized by a function analytical or generated by a statistical law starting the data of measurement for a given site. In a context of theoretical modeling, the profile of wind must satisfy two criteria:
1) The duration of the profile must be limited to reduce the time of simulation
2) The profile of the wind must be representative of the characteristics of the deposit (intensity, variability, statistical distribution…).
In this study, we represented the evolution the speed of the wind, by a scalar function which evolves/moves in time, modelized in deterministic form by a sum of several harmonics. Profile of the wind simulated with a mean velocity of 8.2m/s. Platform: |
Size: 6144 |
Author:Youcef |
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Description: 用于测量水池的温度深度信息和声速信息，并使用温度深度信息使用三种近似公式计算得到声速剖面。（测量得到信息已经写在代码里）-For measuring the temperature of the pool depth information and sound velocity profiles, temperature and depth information using the approximate formula calculated using three sound speed profile. (Measured information has been written in the code) Platform: |
Size: 2048 |
Author:樊姜华 |
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Description: 地震全波形反演，很好的反演速度剖面，搭建工程既可以用-Seismic full waveform inversion, good inversion velocity profile can be used both to build the project Platform: |
Size: 9162752 |
Author:王攀 |
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Description: 利用风洞试验中采集到的风压时程数据来计算平均风速剖面(Using the wind pressure time history data collected from the wind tunnel test, the mean wind velocity profile is calculated) Platform: |
Size: 913408 |
Author:清水闲人
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Search - velocity profile