Search results

China ajdgaofeng@163.com, bWeiyanzh@163.com Keywords: Multi-blade Centrifugal Fan, Unsteady Flow, Pressure Pulsation, Aerodynamic Noise, Numerical simulation Abstract.
Numerical simulation of the three-dimensional steady and unsteady turbulent flow in the whole flow field of a multi-blade centrifugal fan is performed.
Along with the development of the computer technology and the computational fluid dynamics, the CFD technology is replacing part of the experiment gradually.
In order to make sure the stability of the unsteady simulation, the steady numerical simulation is done at first based on the same mesh subdivision, after that, the results of the steady simulation are used as the beginning field to proceed with the whole passage unsteady simulation inside the multi-blade centrifugal fan.
Simulation results and analysis Velocity field.

Currently, many scholars has began to use CFD software for numerical simulation, supplemented by a variety of new measurement techniques for flow within the fluidized bed equipment to detail such as the research of the particle concentration, velocity distribution and other parameters, the calculation of the multiphase flow and reaction process and mass transfer process, and the process of analysis, simulation, optimization, integration, etc.
The local gas holdups and the gas velocity field simulation s.
The local liquid holdup and liquid velocity field simulation.
The local phase holdup, the pressure field, velocity field is a more accurate simulation.
One dimensional numerical simulation of small scale CFB combustors.

A robust and practical CFD code has been developed.
The VSIAM3 naturally satisfies the conservation constraint imposed on the original dynamic system and provides a robust base to develop CFD models for complex flows in real-case applications.
We have also extended the method to be applicable to moving boundary as well as thermal boundary simulations.
So, the parallel code is flexible and portable for different simulation configurations on any hardware with distributed memory.
Summary We have developed a robust and practical finite volume CFD model, VSIAM3, using both VIA and SIA as the computational variables.

Yun[7] used the CFD method to simulate the smooth microchannel and found that fRe in the microchannel is no longer constant at the laminar flow stage and that the transition is earlier than conventional scale, the Rec = 300.
This paper adopts the CFD method to carry out two-dimensional numerical simulation of flow in the microchannel between the parallel flat plates, and determines the Rec.
"Fluent" software is used to conduct the two-dimensional numerical simulation of the flow characteristic in the microchannel.
Conclusions A numerical simulation was performed on the flow behaviors in the microchannel.
This may explain why the Rec obtained by simulations is smaller than experimental data in literature

The experimental findings are compared to numerical results obtained with a computational fluid dynamics (CFD) package using a finite volume approach and its ability for the prediction of fibre movement in molten matrix during forming processes is evaluated.
Therefore, viscous and viscoelastic material models are used in calculations and numerical simulations of composite forming processes [6, 7].
In addition, numerical flow simulations were set-up to model the experiment.
Numerical simulations have been assessed for the prediction of the resistance force.
Additionally, this could be the result of neglecting elastic material properties in the simulation.

The mesh of negative area of cylinder cavity was divided by ANSYS ICEM CFD and the flow field was simulated by ANSYS FLUENT.
Establishment the simulation model Structure and working principle.
ANSYS ICEM CFD is a pre-processing software professional CAE, providing efficient and reliable analysis model for all the world popular software of CAE.
Simulation calculation and analysis Introduction of the dimensionless parameter.
CFD simulation optimization of cooling water jacket structure for 2D25 horizontal diesel engine[J].

Numerical Simulation of Counter-current Flow Field in Double Packing Rotating Packed Bed D.D.
We propose to analyze the behavior of three-phase (liquid) flows with the aid of CFD.
[2] Hugo Llerena-Chavez, Faiçal Larachi, Analysis of flow in rotating packed beds via CFD simulations—Dry pressure drop and gas flow maldistrbution.Canada .
[3] fei Yi, Jianfeng Chen,Numerical simulation and eperiment on pressure drop of a co-current rorating packed bed. (2008) 56-59
[5] Zuyu Wu,Numerical simulation on pressure drop of rotating packed bed with triangular spiral packing. 28 (2011) 704-708 [6] Xiaoqing Zhang, Simulation and analysis of gas-liquid two phase flow field in rotating packed bed.

(a): CFD NWT model.
Goggins, Numerical simulation of linear water waves and wave-structure interaction.
Elangovan, CFD Simulation and Validation of Flap Type Wave-Maker.
Li, Numerical Simulation of Irregular Wave-Simulating Irregular Wave Train.
Elangovan, Simulation of Irregular Waves by CFD.

The reference paper describes the data used, the simulation set up and we demonstrate that our simulation results is consistent with the existing data.
Transparent 3D View 2 Stress Simulation A.
Solid works flow simulation was used to comparison.
For the simulation the blade pitch was fixed at 4 degrees.
Khatri, Study of Dynamics of Shock-Vortex Interaction on Flap Wing by CFD tool, International Journal of Scientific & Engineering Research, IJSER Publishing, Houston, USA, Volume 10, Issue 2, PP -1540-1548, February 2019. https://www.citefactor.org/journal/pdf/Study-of-Dynamics-of-Shock-Vortex-Interaction-on-Flap-Wing-by-CFD-tool.pdf

Simulation of methanol steam reforming heated by waste heat for hydrogen production in a microreactor Feng Wang 1, a, Jing Zhou 2, b, Guoqiang Wang 2, c, and Xinjing Zhou 2, d 1Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing, 400030, PR China 2College of Power Engineering, Chongqing University, Chongqing, 400030, PR China a wangfeng@cqu.edu.cn, b 646108160@qq.com, c 513715507@qq.com, d 497314155@qq.com Keywords: waste heat; methanol steam reforming; hydrogen production; simulation Abstract.
With the application of general finite reaction rate model in CFD software of FLUENT, we carried out 3-D simulation of this process.
Physical, mathematical and kinetic model The physical model used by simulation is shown in Fig.1.
With application of general finite reaction rate model in CFD software of FLUENT, the governing equations for analysis of the reacting flow in methanol steam reforming reaction channel of the reactor are: Mass balance: (1) Species balance: (2) Momentum balance: (3) Energy balance: (4) Ideal gas law: (5) Since CO content in the products of methanol steam reforming is very small on copper based catalyst, single rate kinetics of methanol reacting with water