Search results

For fluid simulation, rather than solving the Navier–Stokes Equation using the conventional CFD (computational fluid dynamics) techniques, LBM (lattice Boltzmann method) involves local computations only, and it is proved to be more efficient in small-scale modelling [1].
LBM with Large Eddy Simulation.
In recent decades, LBM has been regarded as an effective alternative to conventional macroscopic fluid simulation methods for many fluid flow problems.
Simulation Results and Discussions A two-dimensional numerical model was set up using DEM-LBM.
Seville, Parallelization of a Lagrangian-Eulerian DEM/CFD code for application to fluidized beds, Powder Technology 2011, 207 (1-3) 270-278

The simulation draws some conclusion on distributive rules of solid particle inside impeller passage.
Through numerical simulation, the paper obtain the regularity of distribution of solid particles in pump passage.
Service fluid used in numerical simulation was water that there existed sand particle.
During simulation, the paper supposed that service fluid belonged to newtonian fluid, which had isotropy in part.
[2] Schilling: American Society of Mechanical Engineers, vol. 14 (2002), p.14-18 [3] Fujun Wang:Computational Fluid Dynamics (CFD) Software Analysis: Principles and Applicatio(Tsinghua university press, 2004), in Chinese

Numerical simulation was used to obtain the transient concentration of dust in the process of dispersion in a closed vessel in this work.
The object of present work was mainly to study the transient dispersion of dust in a vessel by using numerical simulation.
The hemispherical nozzle used in the experiment and numerical simulation is shown in Fig. 2.
Calculation results and comparison Dust dispersion process in the 5 L vessel can be obtained by using numerical simulation.
CFD provided a useful approach monitoring the transient concentration of dust in a closed vessel under impulse pressure.

It has been decades for utilizing FLUENT numerical simulation to research on fluidic elements or jet pumps both at home and aboard.
The CFD software FLUENT is employed to calculate and simulate the internal flow field of the jet flowmeter at different inlet flowrates in this paper.
Numerical Simulation Governing equations.
Physical model and mesh of the jet flowmeter Simulation results and analysis (a) (b) Fig.3.
The simulation results are shown in Figure 5.

Numerical arithmetic, which based on CFD method and is used for design configuration and shape of an icing prober is given.
First, build numerical method for design based on the CFD method; Second, develop the advanced ice sensors according to the optical property of ice; Third, design the aerodynamic shape of the prober to assemble the ice sensor.
Fig.3 Configuration of the prober and the sketch of the wind turbine installed with the prober Simulation of Detection Effects.
The diameter of water droplet for simulation is 20μm, 40μm and 100μm.

Numerical Simulation Results The object of this paper is to performance an optimization study of the porous medium of the regenerator.
The values of fiber diameter are mostly taken in the range of 12μm to 100μm for empirical, especially values around 50μm performs good in CFD simulation and experiments.
The 1D CFD code Sage was used for the calculation and reached a satisfactory result.

These problems are usually more than a single reason, and the extent of the combined effects is difficult to predict reliably by mathematical modelling or Computational Fluid Dynamics (CFD).
Simulation of Flow through a Pump Sump and Its Validation
CFD Modeling to Evaluate Design of an Intake of a Raw Water Pump Station at a Water Treatment Plant.
Validation of a Large-Eddy Simulation Model to Simulate Flow in Pump Intakes of Realistic Geometry.132(12) : 1303-1315

It is calibrated based on the numerical simulation, wind tunnel test and flight test data.
We can study this kind of problem with CFD but this method requires the reversible model in real time, which makes it difficult to apply CFD.
Simulation of a flush air-data system for transatmospheric vehicles.

Advanced Numerical Computation in Mechanical System Simulation Modeling and simulation in engineering has been a reality due to the advancements of computational tools such as finite element methods (FEM), computational fluid dynamics (CFD) and multibody dynamics (MBD) simulation tools.
Multibody Dynamics Simulation.
In mechanism simulation of mechanical systems, MBD simulation is a discipline of current active research.
To verify design and to establish good knowledge of the dynamic loads in all possible loading conditions, numerical simulation techniques, involving FEM in strength analysis of flexible components, CFD in flow simulation and multibody dynamics in simulation of rigid body parts and systems [8], are active research areas because they enable a digital testing at a minimum risk and cost.
CAD Integrated Simulation.

To find an optimal die and billet concept, simulations have been performed using the CFD program Flow3D.
Furthermore, the pressure is very low during the whole process but increases very fast at the end of the simulation.
Figure 3: Simulation results of the infiltration process using an open cavity Further simulations were performed using a closed die concept.
Figure 6: Example for simulation results of hybrid semi-finished materials Heating and forming tests of hybrid semi-finished materials.
For the process design CFD-Simulations were performed.