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In doing so, the CFD modulus in the software ANSYS12 version is used to analyze the dimple effect on the tribological performances of the bearing using two-way fluid-solid coupling algorithm.
In doing so, the CFD modulus in the software ANSYS12 version is used for studying the bearing performances.
In the simulation, dimples with semi-spherical shape is employed, which can result in a significant enhance in the load-carrying capacity due to cavitation occurrence[4].
Governing Equations In order to investigate the dimple effect on tribological behavior of a textured big end bearing, the CFD modulus of ANSYS12 version is used, which incorporating the cavitation effect.
(a) (b) Fig.1 Schematics of textured big end bearing and dimple (a) Schematic of big end bearing (b) Schematic of dimple with sizes In the simulation, the bearing is meshed with a hexahedron element with eight nodes, and the whole number of the element is 12100.

In this paper, a novel dynamic de-oiling oil-water separator was proposed, and through Computational Fluid Dynamics (CFD) simulation, the effects of the pressure drop ratio on the separation efficiency and the split ratio were analyzed.
Numerical Simulations Fig. 1 Simplified model for simulation Table 1 Main dimensions of the simulation model DI(mm) Di/DI Do/DI Du/DI L1/DI L2/DI L3/DI L4/DI α() 70 3/7 3/15 3/7 53/7 25/7 10/7 1/7 10 Fig. 2 Meshes of the simulation model Determination of Boundary and Operation Conditions.
The simplified simulation model is shown in Fig. 1.
The final meshing for the simulation is shown in Fig. 2.
Though the numerical simulation works, the following results could be obtained.

And, the CFD analysis model of the swirler is established.
CFD model.
Fig.3 Swirler Model and Meshing Application of Fluid Domain The Parameters of CFD .
According to the optimization design variables determined before and the corresponding range of taking value, using Optimal LHS [13] method to arrange numerical simulation experiment, the experiment arrangement is shown in Table 2, using numerical simulation analysis of cold state single-phase flow field CFD towards swirler.
Combustor simulation. 2002 Annual technical report, Center for Integrated Turbulence Simulations, Stanford University,2002

Research On The Effect Of Natural Ventilation On Buses In Summer Based On CFD Numerical Simulation Method Bao LIN 1, a, Xueting WANG 1,a and Xiao HU 2,a 1Department of municipal and environmental engineering, Shenyang Jianzhu University, Shenyang, Liaoning, China,110168 2China Resources Gas Group Ltd, Jinan, Shandong, China axuew.ting@hotmail.com Keywords: city buses; natural ventilation; vehicle velocity; roof openings; interior thermal comfort; the whole-domain approach Abstract.
Based on CFD numerical simulation, with a whole-domain approach, this paper predicts air flow and thermal comfort in naturally ventilated bus.
This paper, with the help of CFD simulation software, simulates the bus interior temperature and velocity under different vehicle velocity and open condition of roof openings.
Table 1 Simulation cases Outdoor air temperature[˚C] Vehicle velocity [km/h] The state of bus roof openings Side window Case1 31 45 close Maximum open Case2 31 45 open Case3 31 25 close Case4 31 25 open Results of the Simulation and Analysis Thermal Environment in different parts of the bus.
This part focuses on the simulation results based on different open condition of roof openings.

For the application of CFD in vehicle aerodynamic simulation and its significant, Hucho [1] had performed a comprehensive review.
Since the first researchers [3, 4, 5] applied CFD to vehicle external aerodynamic prediction, applications of CFD for airflow predictions around the vehicle have become widespread.
However, since the turbulence models in CFD used approximations, the simulation results may contain uncertainties.
This study used commercial CFD software, FLUENT to conduct all the numerical investigations.
Moreover, flow field at the rear end of road vehicles is highly unsteady, so DES (detached eddy simulation) or LES (large-eddy simulations) model should be taken to investigate the transient characteristics of the wake vortex in the future.

In this study, the CFD study was conducted by using Fire Dynamics Simulator of NIST [13, 14].
Simulation Set Up Simulations were carried out using Fire Dynamic Simulator (FDS) of NIST version 6.0.
FDS is a computational fluid dynamics (CFD) model of fire-driven fluid flow.
The simulation time was set as 500 second.
Smoke control in case of fire in a large car park: CFD simulations of full-scale configurations.

Therefore, pure experiential designing method is inadequate, and a wind-tunnel model or computer simulation is preferred.
Presently the software simulation technology has gradually become a mature aiding analysis tool for layout design.
In order to provide technical evidence for residential districts environment design, the results of sunlight analysis and winter CFD simulation are integrated to make a comprehensive consideration.
CFD Simulation Results for a Dandong high-rise residential district Scheme Version Site layout and simulation result Scheme 1 The high-speed wind channel through the residence formed by the north entrance and inner roads.
To solve this problem, the analyzing process can be carried out in such steps as scheme design—CFD simulation—scheme revision.

Then CFD has been a powerful tool for engineers to analyze and solve questions about fluid flow.
So some advises are provided for those engineers who design the structure of antennas or compute the wind loads by numerical simulation.
Finally, the influencing curve versus mesh division for simulation result is shown in Fig.5.
The modeling principle of the outer flow field in CFD is described in detail.
Influencing factors in numerical simulation of wind load on buildings [J].

Therefore, Compared with 6BT impeller, this research uses CFD as a tool to study the effect of 6BT impeller on fluid pressure distribution and power consumption.
The 3D flow field was simulated using the commercial CFD package, Fluent V6.3.
The average shear rate can be used to evaluate the apparent viscosityof the solution using Herschel- Bulkley rheological model: (3) The xanthan gum solution rheology was modeled as Herschel-Bulkley fluid, and all simulations were conducted in the laminar and low transitional regimes using the laminar model.
The simulations were considered converged when the scaled residuals for each velocity transport equation were below 1×10-4.
Fig.4 and Table 4 shows the pressure profiles of the flow field and CFD values of agitation torque in xanthan gum solution, respectively.

A CFD model of erosion-corrosion of Fe at elevated temperatures in aqueous environments M.M.
Such models have comprised quasi-static and simulation models.
In this paper, a CFD model is generated of the tribo-chemical interaction at elevated temperatures.
For the density of water: (12) and for the water viscosity variation with temperature: (13) Equations (12, 13) were used in the CFD simulation to calculate the water density at the temperature range given.
The validation simulation was made for SS304L stainless steel alloy using the Forder erosion model [21] as in [30].