Search results

An attempt of this simulation is to identify which type performs better in the same wind conditions and swept area.
Three-dimensional computational fluid dynamics (CFD) was adopted in this analysis, after solid models of them were generated.
An effort to make a comparison of straight-blade and twisted-blade VAWT about their aerodynamics and power output by CFD is conducted in this paper.
Numerical simulation Grid System Generation.
ICEM-CFD was adopted for unstructured mesh generation and solution was conducted in Fluent.

The thermal distribution of cabin can be simulated by the CFD analysis.
Plenty of researchers have done this kind of simulation work.
Numerical simulation analysis The numerical simulation process is shown as follows: First, the 3-D model of the vehicle is established by AutoCAD and meshed by CFD analysis software.
And then the model is exported to CFD software to generate mesh for numerical analysis.
[4] Ambs, R: Improved Passenger Thermal Comfort Prediction in the Preprototype Phase by Transient Interior CFD Analysis Including Mannequins, SAE Paper (2002)

Research on the Natural Ventilation Cooling Effect of Residential Building Based on the CFD and DeST Simulation Lihua Zhao1,a , Cuicui Qin1, b 1Building Environment and Energy Laboratory (BEEL), State Key Laboratory of Subtropical Building Science, South China University of Technology, China, 510640 a lhzhao@scut.edu.cn, b cuicuiqin@foxmail.com Keywords：Natural ventilation, residential building, cooling, air change rates Abstract.
This paper presents a method, integrating simulation by both software of DeST-h and computational fluid dynamics (CFD) in typical meteorological year (TMY) in Guangzhou, to evaluate quantitatively the natural ventilation cooling effect.
Also, due to the lack of appropriate simulation tool predicting energy use of natural ventilated building is difficult.
In order to save the computer simulation time, a simulation method was pointed out, shown in the figure 2.
Figure 2 Simulation flowsheet A wind direction is set to a cycle, first take a wind direction and the wind speed V1 for simulation.

And the availability of numerical simulation model was verified by comparing the empirical curve and numerical simulation results.
Simulation CFD implementation.
SIMPLEC algorithms were obtained in this simulation.
Comparing the simulation results and the results obtained with the empirical equation, whether the equation model used in CFD was correctly selected and the boundary conditions were accurately set can be verified.
The simulation condition can be set in the same way.

This study is focused on the numerical simulation of the evaporation of water in Class A pan with Computational Fluid Dynamics (CFD).
CFD Simulation for Water Evaporation The CFD (Computational Fluid Dynamics) technology enables engineers to study the fluid dynamics and it is a tool for compressing the design and development cycle.
CFD Modeling.
Geometry of the case study (H= 0.5m; h= 0.05m) Simulation study was performed using computational fluid dynamics (CFD) software FLUENT version 6.3.
The energy budget, CFD simulation are data intensive as they require measurement of many meteorological variables.

In this study, idealized model with 50% of porosity was used in the simulation and 1mm displacement was applied on top of the model.
The FSI boundary condition approach was used combination of CSM and CFD.
Table 1 shows the contour plot of velocity and pressure distribution for both CFD and FSI simulation.
On the other physic (CFD), the maximum of the shear rate is 1.67 s-1.
[6] Syahrom, A., et al., Mechanical and microarchitectural analyses of cancellous bone through experiment and computer simulation.

Design and optimization of high-viscosity and high-density drilling fluid separation system Xu renbo1, a, Liu xiaoguang2,b and Tu fuquan1,c 1 College of Mechanical and Automatic, Wuhan University of Science and Technology, Hubei, China 2 Department of Mechanical and Electrical Engineering, ChiZhou College, Anhui, China a xurenbo@gmail.com, bliuxg003@gmail.com, ctufuquan@gmail.com Keywords: separation system; orthogonal method; CFD simulation; flow field Abstract.
Using orthogonal experiment method, we simulated flow field in this system by CFD software and analyzed the effect of operate variable and structural variable on system degassion efficiency.
In order to simplify the CFD simulation process of flow field in two-stage vertical separation system. the portion factor design was employed according with orthogonal experiment.
As CFD simulation results shown in Figure 2, this program can solve the problems that exist in first stage gravity separator , such as air bubbles become smaller and drilling fluid froth due to the larger impact.
According to numerical simulation results, the ideal model was set up, as shown in Figure 3.

These results were compared with CFD calculations of wind flow around object with quarter circle cross section.
Therefore, it is necessary to determine these values by experimental measurements [1] or numerical simulation of the wind flow.
In this case, the simulation was solved by k-e model and the first order scheme.
Comparison of two experimental measurements with solution by CFD is shown in the graph (Fig. 9).
Lobotka, The natural wind simulations in the BLWT STU wind tunnel, in: ATF, 2014 Vienna

The aim of present study is to investigate this innovative design from aerodynamic point of view by means of validated CFD techniques.
The commercial CFD package ANSYS Fluent and the implemented 6DOF solver[8] have been utilized in order to conduct unsteady flow-driven simulation over whole turbine operating range.
Reference Configuration Double-stage Configurations Main Rotor Assist Rotor blade airfoil blade chord length [mm] rotor radius [m] blade length [m] moment of inertia[kg.m2] NACA 0018 83 0.375 1 0.0225 NACA 0018 83 0.375 1 0.018 NACA 0018 83 0.1875 1 0.0045 A validated 2D CFD simulation setup from a recently published work [3] have been employed.
Regarding negligible variations witnessed in primary simulation results having shorter time step sizes, an optimum time step of 0.001 sec has been prescribed for present calculations in order to reduce computational time.CFD simulations were conducted by parallel processing and the residual convergence criterion was set to 1×10e-4 for all solution variables.
Time series of angular momentum for the reference and the double-stage configurations at wind speed of 6m/s Conclusion The newly proposed double-stage rotor design is successfully investigated by means of CFD simulation in present research.

Based on CFD software, three dimensional unsteady internal flow field numerical simulation of some type rotor oil pump is carried out.
And, the velocity and pressure simulation results at different speeds are obtained.
Based on acoustic finite element and infinite element method, CFD software and acoustic solver software are used to simulate the flow induced noise of rotor oil pump.
Calculate the spread of flowing sound source, and export value of the sound pressure level of monitoring points U Based on unsteady numerical simulation of CFD software, Results of pressure, velocity of unsteady flow are obtained.
Application of RNG model in numerical simulation of engineering turbulent flow[J].