Search results

The release angles in these simulations were varied in intervals to give all unique combinations.
Improvement of the model Parametric study of damping coefficients In [11], a series of 2D free-flight simulations were performed at a Tachikawa number,, of 8.3 with the CFD-RBD model.
The improved model is referred to as QS (quasi-steady model) while the CFD-RBD model of [12] is referred to as CFD.
Simulation of 6DOF motion of 3D flying debris.
On the Use of Quaternions in Simulation of Rigid Body Motion.

Numerical Simulation and Vibration Analysis of Inner Flow Field for Lage-sized Throttle Valve Guoqin Huanga , Ying Heb, Jin Yuc State Key Laboratory of Mechanical Transmission, College of Mechanical Engineering, Chongqing University, Chongqing, 400030, China ahgtree@163.com, bheying8706@163.com, cyj93@163.com Keywords: throttle valve; CFD; inner flow field; vibration Abstract.
Based on the computational fluid dynamics(CFD) technique, the three-dimensional inner flow field of a large-sized throttle valve was built and the dynamics characteristics of the control valve were analyzed.
Fig.2 Simulation model Fig.1 The 2D structure diagram of the throttle valve Mathematical models Control equations.
Analysis of simulation results Fig. 3 and Fig. 4 showed the velocity contour and pressure contour when valve was 50% opening.
(4) The three dimensional inner flow field of the throttle valve is simulated by means of CFD, which provides details of the reference data for channel optimization and designing this type of throttle valve.

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.

The effect of the length of mesh pipe on ventilation effect was studied by numerical simulation.
It is important and difficult of model building and settling to study the temperature variation field of storage grain, and computational fluid dynamic (CFD) method is a good way to settle these problems, which have the characteristics of short research cycle, efficient simulation and low cost [4].
CFD technology was already applied for air conditioner, drying, ventilation and transportation and other relevant field [5].
Therefore, compared with experiments, comprehensive results can be obtained by CFD simulation.
Result and discussion Three design projects were adopted in simulation study.

Keywords: Stent; Fluid-structure interaction (FSI); Finite element method (FEM); Computational fluid dynamics (CFD) Abstract: The 316L stainless steel stent was analyzed about the effect on interaction with plaque and vessels and blood flow during and after implantation using finite element method (FEM) and computational fluid dynamics (CFD).
Another is the computational fluid dynamic (CFD) that is mainly analyzed how stent implantation impacts on blood flow, etc.
Numerical simulations 2.1 Physical models The Pro/E 4.0 is used to develop the geometry of the balloon, stent, plaque and artery.
Finite element simulation of slotted tube (stent) with the presence of plaque and artery by balloon expansion.
Three-dimensional numerical simulations of physiological flows in a stented coronary bifurcation.

Thermal Load Analysis The thermal load and stress of exhaust manifold are worked out by means of CFD-FEM coupling.
However, because the boundary meshes of CFD model and FEM mesh do not match with each other, before FEA task, it is necessary to map the thermal convection data on the CFD boundary to the FEM mesh by certain algorithm.
CFD Calculation and Results.
[4] Li Z.A., CFD Application on Design for Exhaust Manifold [J], Automotive Engineering, 2009, (12): 52-55
[6] Yang W.L., Numerical Simulation of Thermal Load on Engine Exhaust Manifold [J] ,Huazhong Science and Technology University Journal,2006,34 (12): 98-100 [7] Wang L.X., Analysis and Improvement for crack on Engine Exhaust Manifold [J], Shanghai Automotive,2007, (12):15-18

The device operation was modeled with Computational Fluid Dynamics (CFD). 
To assure the validity of the simulation results, a grid-convergence test was carriedout (FIG. 2).
The values for the parameters used in the simulation are presented in Table 1.
CFD simulations of the action of this device demonstrated it is capable of lowering the pressure gradients above the region where the draining funnel occurs,delayingthe dragging of the slag into the funnel, thus, reducing the critical draining height.
Mathematical Simulation of Fluid Dynamics during Steel Draining Operations from Ladle.

A 2D CFD numerical method based on loose coupling algorithms was adopted to simulate vortex induce vibration of a spring-mounted cylinder.
Obviously, two-dimensional numerical simulation is the basis of "strip theory approach".
Much of the numerical errors mainly result from aspects of the problem solution, such as the procedure of iteration, the grids and time step size in most CFD simulation cases.
The hydrodynamics in each sub-step of CFD calculation can be worked out by the integral form of the surface force passed to the rigid body motions.
A 2D CFD numerical method based on loose coupling algorithms was adopted to simulate vortex induce vibration of a spring-mounted cylinder.

The 3D flow field generated by two-stage impellers in the agitation of xanthan gum, a pseudoplastic fluid with yield stress, was simulated using the commerical CFD package.
Murthy and Jayanti [9] studied the mixing of power-law fluids with an anchor impeller using CFD modeling.
Numerical simulation Xanthan gum solution in water at 1.5% mass concentration is used in this work.
Simulations are considered converged when the scaled residuals for each transport equation are below 1×10−4.
Conclusions Computational fluid dynamics simulations are performed to study the mixing performance of two-stage impellers in the agitation of xanthan gum.

The CFD analysis model was established by adopting the computational fluid dynamics (CFD) method to implement dynamic simulation analysis on air hot in the drying mechanism.
The Reynolds number of hot air inside the air nozzles is 7458099, larger than the critical Reynolds number 13800, so it is turbulent flow and the turbulent flow κ-ε model should be used for simulation calculation.
Analysis was carried out flow characteristics of hot air in air nozzles by adopting the CFD simulation technique and structure optimization was carried out on the air nozzles.
Beijing: Science Press, 2008 [6] Best Practice Guidelines, Version 1.0, ERCOFTAC Special Interest Group on “Quality and Trust in Industrial CFD”, January 2000
Fluid flow in FHP-2 lattice gas model simulation pipeline [J].