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By improving its structure, using the simulation analysis of ANSYS software, it analyzes the new structure on the impact of lowing start.
Simulation results for the actual SLC9-2-type direct reading current meter provide guidance for new design.
Numerical Simulation Based on Fluent tubular pump[J]．Drainage and Irrigation Machinery Engineering, 2010, 28(3): 233—236
[3] Fanchun Li.ANSYS Workbench design modeling and virtual simulation [M].
ANSYS Workbench design, simulation and optimization [M].

Therefore, it is reasonable to adopt numerical simulation methods for fine simulation [3].
Computational fluid dynamics (CFD) was used to analysis fire overflow of external wall insulation system fire test conditions [4].FDS uses large eddy simulation technology to solve the low-speed, heat-driven flow N-S equations, and directly solves large eddy according to the thinking of large-eddy simulation [5].
HRR of fire in the simulation is equivalent as the test.
This means the fire HRR is selected reasonably in simulation.
FDS simulation of high-rise building fire smoke spread.

Simulation results demonstrate that the composite control system has good performance in tracking AOA and acceleration command by respective deflection in cruise.
The position and efficiency of wings are carefully optimized by CFD computation.
The control system structure of hypersonic vehicle Simulations of Composite Control System Assuming the hypersonic vehicle flight height , the velocity (), the trim angle of attack ,and the command of the velocity (), and while the scramjet engine is power on, the command of the normal maneuver acceleration.
The simulations of the composite control system are shown as follows.
Simulation results show that the composite control system can separately trail the command of velocity, AOA and normal maneuver acceleration accurately, and the normal maneuver acceleration doesn’t affect the AOA in cruise.

Mid-profile Design and Numerical Simulation for Supercavitating Vehicle Li Yu-tian, Zhang Yu-wen College of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, Shanxi liyutian721@163.com Keywords: supercavitating vehicle; numerical simulation; mid-profile shape; elliptical equation; profiles design Abstract: Based on elliptic curve equation and G.V.Logvinovich cavity geometrical equation, the mid-profile of supercavitating vehicle was researched.
This paper comes up with the design and construction methods of the vehicle mid- profiles based on elliptical equations and G.V.Logvinovich supercavity equation and proves the superiority of such streamline design to cylinder by numerical simulation.
Numerical Simulation and Analog Utilizing the numerical method in 3.1 to run the numerical simulation analog for the above five different streamlines, the initial conditions: ,, .
Conclusion Based on elliptic equation and G.V.Logvinovich cavity equation, this paper comes up with the designing method of mid-profile streamline for the supercavity vehicle and numerical simulation analog in different situations.
Multiphase CFD modeling of developed and supercavitating flows[R].RTO- EN- 010,No.13,RTO (The Research and Technology Organization of NATO) AVT Lecture Series on “Supercavitating Flows”, Brussels, Belgium.

FDS (Fire Dynamics Simulator) [6] was developed by National Institute of Standards and Technology’s engineering laboratory is a computational fluid dynamics (CFD) model of fire simulation software.
The detailed design of the fire scene evacuation simulation is shown in Fig. 4.
Therefore, the simulation result was close to the actual situation.
By 210 s, the concentration reached its highest level in the simulation at 2700 ppm.
By the end of the simulation at 930 s, the CO concentrations ranged between 2300 and 2500 ppm.

Adopting the RSM (Reynolds stress model) to conduct numerical simulation on gas phase flow field in bypass cyclone separators with two kinds of inlet structure, meanwhile, interphase coupling discrete model DPM is used to simulate the trace of particles in bypass cyclone separator.
In the recent years, CFD technology is used more and more in computing the gas-solid field [1] in the separator as the technology develops fast.
Simulation Result Analysis.
Fig.4 demonstrates the change of downside flow along the axis in the separating part at the end of the chimney by numerical simulation and computation.
In numerical simulation, the inlet of separator B is divided into three different regions, the region near the wall, the region in the center part and the region far away from the wall.

The farm vehicle drive axle housing meshing using CFD mesh automatically divided.
The minimum size of the CFD analysis automatically generated meshes for 0.689440mm, maximum size of 137.890mm.
Fig.1 Drive axle assembly drawing Fig.2 Meshing drive axle housing The load of drive axle housing with constraints Due to the operation condition of the static load simulation, the drive axle support end is imposed two fixed constraints and imposed loads in its support of the leaf spring.

The grid is generated by ANSYS/CFX and the meshing picture is shown in Fig.5: Fig.5 The CFD meshing In order to improve the quality of meshing, the outer static flow field adopts the unstructured tetrahedral mesh method and it is divided into 533,000 elements and 94,000 nodes.
Results of simulation anslysis In order to achieve a higher precision, the value of convergence residual is set as .
Comparison of simulation result and experimental data The curve of power characteristics is drawed by Matlab software.
The mechanical powerloss of the blades is not considered here, so the simulation analytical result is reasonable.
It is avaliable and reasonable to use the ANSYS/CFX simulation method to do the analysis by comparing with the experiment.

In addition, we carry out this simulation with Ha=21.2 and Re=5681.
Thus, the electro-magnetic terms is indispensable in the simulation of MHD flows.
Wilcox, Turbulence modeling for CFD, 2nd edn.
Pan, Numerical simulation of MHD duct flow about laminar and turbulence model, Nuclear Fus.
Liu, Direct numerical simulations of magnetohydrodynamics on turbulent duct flow, Nuclear Fus.

Aiming at an outbound process of the airship driven by the hydraulic rod and cables, a simulation of the wind-induced displacement for the airframe is conducted.
Then, a finite element model of the airship structure is modeled and a simulation of the wind-induced displacements for the giant airship is conducted.
Simulation of Fluid Dynamics under Wind Load Overview of Whole Structure.
In the analysis of fluid dynamics, a spatial three-dimensional flow field including the airship and boathouse is simulated with CFD-Fastran by coupling compressible Euler’s equations based on the density.
(2) Simulation of Wind-induced Displacements of the Airship Simulation of the wind-induced displacements of the airship belongs to geometrically nonlinear problems, so the nonlinear finite element method is used.