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CFD Study on the Flow Characteristics in Filleted Microchannels YAN Hong-jie1,a, ZHOU Pingb,*, XU Ze-linc, CHEN Zhuod, MO Jing-wene 1School of Energy Science and Engineering, Central South University, Changsha Hunan, 410083, P.R.
The flow characteristics of water in filleted microchannels were simulated based on CFD method.
Due to the high cost, long cycle and big uncertainty of measurement of experimental study, numerical simulation have been widely adopted these years to study flow in microchannels [8,9].
Thus, in this paper, CFD method was used to study laminar water flow in filleted microchannels.
(3) Based on the data from numerical simulation, the equation of Po number versus aspect ratio was fitted as .

Numerical Simulation Analysis for Influence of Lateral Inclination Angle on the Yacht Resistance Fei Fu 1,a , Yueqin Liu 1,b, Xinxin Wu 1,c 1 Jiaotong Building ,South China University of Technology , Guangzhou, P.R.China, 510641, a843933833@qq.com,b825040874@qq.com,c690350345@qq.com Key words: check node method; numerical simulation; resistance computing Abstract: The article analyses the yacht navigation attitude in the navigation process based on check node method.
It solves RANS equations in the CFD software—Fluent based on VOF method, combined with RNG k model.
Built the model in Gambit, in the platform of FLUENT software, by solving the RANS equations to make direct numerical simulation calculation.
Conclusion In this paper, check node method combined RNAS equation was carried out on hydrostatic navigation simulation analysis of the yacht.
[3]LIU Zhi-hua, XIONG Ying, ZHANG Yong-kun, Study on separating calculation method for ship model wave resistance based on RANS equation and its availability, Journal of Ship Mechanics, Vol.14 No.11, Nov. 2010 [4] NI Chong-ben , ZHU Ren-chuan , MIAO Guo-ping , FAN She-ming, A method for ship resistance prediction based on CFD computation,CHINESE JOURNAL OF HYDRODYNAMICS, Vol.25 No.5,Sept. 2010

Regression Test of Stainless Steel Stamping Well-Pump Based On Numerical Simulation Chuan Wang a, Weidong Shi b, Weigang Lu c, Yan Xu d, Ling Zhoue (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China) awangchuan198710@126.com, bwdshi@ujs.edu.cn Keywords: stamping pump regression experiment CFD optimization.
Combined with the features of stamping technology, this research was taken on raising the efficiency of stamping well pump, using hydraulic design of impeller and CFD and regression test method.
The research which associates hydraulic design and CFD with regression test is very few nowadays.
Therefore, this paper uses simulation to forecast preliminarily the pump’s efficiency.
Fig.2 Comparisons of efficiency Fig.2 shows that the simulation efficiency of optimization model pump agrees with the experiment value quite well in the entire flow range, the error is within 2%, which proves the accuracy of the whole flow field numerical simulation.

Because of the symmetry of the geometry model, only half of a single chamber modeled in ICEM CFD according to the actual size was chosen as the calculation model to carry out the numerical calculation.
ICEM CFD was used to block and mesh the model.
Continuity equation: (1) Momentum conservation equation: (2) Transport equations: (3) (4) In CFD simulation, the perforated plates were modeled as thin porous media of finite thickness with directional permeability over which the pressure change was defined as a combination of viscous loss term and an inertial loss term which is given by [5] (5) Many methods can be used to derive viscous and inertial loss coefficients.
Results and Analysis Two simulations were carried out respectively with and without introducing the guide plates.
Wang: CFD Ansysis-Theory and Apply of CFD Software ( Tsinghua University Press, China 2004), p7 (in Chinese) [5] ANSYS Inc.: ANSYS FLUENT 12.0 User’s Guide, 2009

Sheshathri2, Kamesh2, A.Avinash2 2Student, Sri Venkateswara College of Engineering 1Assistant Professor, Sri Venkateswara College of Engineering *Email: natraj@svce.ac.in Keywords : Engine Emission, SCR, NOx, Urea, Catalyst-TiO2, CFD.
Abstract: The objective of this work is to determine the maximum reduction of NOx emissions by varying the concentrations of urea solution with a reduction catalyst, and optimization of the urea injection by the evaporation of the solution, using the CFD-Fluent solver.
From the simulation results,it was seen that only at 75% and 100% load,the evaporation point of the urea solution was higher than that of the boiling point (423 K), due to complete vaporisation of water. 1.
EXPERIMENTAL AND SIMULATION PROCEDURE Before starting the engine, the urea solution should be prepared for different concentrations of 30%, 32.5% and 35% by weight.
[8] Tamaldin, N., Roberts, C.A., and Benjamin, S.F.(2010) Experimental study of SCR in a light duty diesel exhaust to provide data for validation of a CFD model using the porous medium approach.

Prism mesh used to resolve the physics perpendicular to the surfaces of the models was applied using ICEM CFD.
It has been demonstrated that CFD techniques can be used to analyze the flow and temperature field inside the cockpit of an aircraft.
The exact number of inlets and outlets, along with their accurate positioning and velocity orientation, were given due to their importance during simulation.
Pressure-based formulation with explicit algorithm of Fluent® CFD code [10,11] was chosen, along with SIMPLE scheme for computation.
Jalil and Haider Qassim Alwan," CFD Simulation for a Road Vehicle Cabin" JKAU: Eng.

Later, CFD method based on micro element becomes a powerful means for studying fluid in recent years [3].
CFD method is not limited by the hypothesis so it is fit for not only ship but also marine vehicle.
Although flow field can be analyzed by CFD, it is difficult to treat moving boundaries.
To verify feasibility of the composite scheme with CFD, straightly navigating of a conceptual amphibious vehicle was simulated.
Numerical Simulation Based on ALE Governing Equations of Fluid.

The flow pattern and temperature distribution of molten steel in tundish were calculated by CFD and heat transfer method.
In recent years, with the rapid development of efficient numerical algorithm, fine turbulence model and computer hardware performance, numerical simulation prediction has been widely used in fluid motion.
To the tundish for a steel round billet continuous casting machine, this paper used CFD and heat transfer calculation method, calculated the effects of turbulence inhibitor on flow and temperature distribution of molten steel in tundish.
Chen, et al.: Physical simulation on gas curtain of single flow tundish, Refractories & Line. 38(5) (2013) 11-17
Garcia-Demedices, et al.: Mathematical simulation and modelling of steel flow with gas bubbling in trough type tundishes, ISIJ Int. 43(5) (2003) 653-658

With the rapid development of the computational fluid dynamics(CFD), CFD tools to analyze the aerodynamic characteristics of aircraft have been widely used in the aircraft design phase.
Simulation Model Computational Grid.
Simulation is effective.
Journal of System Simulation 2010,s1
[7] Wilcox D: Turbulence modeling for CFD.

az3290491@student.unsw.edu.au, bt.barber@unsw.edu.au Keywords: Aerodynamics, ground effect, reference frame, CFD.
With an extra boundary nearby it becomes harder to appropriately match the experimental set-up with reality, and the extra boundary condition also adds complexity to computational simulation.
This principle has led to the commonly accepted system of aerodynamic simulation, using either a body-fixed wind tunnel or body-fixed CFD situation to simulate the real-life case of a body moving through a fluid.
It is straightforward to simulate both a stationary body within a moving fluid, and a body moving in a still fluid with the CFD software Fluent.
The flowfields of an aerofoil in ground effect included a number of interesting features which were highlighted by the body-moving simulations.