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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.

The hydrofoils were tested through computational fluid dynamic simulation.
The inlet speed is varied accordingly for different simulations.
Through repetitive iterations and rotations of the blades during simulation determined that after 3 revolutions the results become steady shown in Fig 2.
CFD results have slightly under predicted the torque, since the CFD geometry did not have an axial shaft and frame as shown in Fig. 4.
CFD predicted maximum torque of 2.9 Nm at 40 rpm.

He also performed CFD simulation of drosophila and compared his results with the dynamic model of drosophila constructed by Dickinson [5].
Figure 1 Schematic of experimental apparatus set-up Numerical Simulation.
Computational simulation was performed to investigate the flow characteristics and vortices structure around the coleoptera's wings using CFD commercial software ADINA-F [R].
Numerical Simulation.
The thin plate motion in the x and y coordinate used in the simulation are shown in figure 4.

Numerical and experimental analysis on indoor thermal environment in commercial kitchen Dahua Jiang1,2,a Zhihua Wang3,b Faen Shi1,c Rushan Ren1,d 1 Jiangxi University of Science and Technology,Ganzhou,341000,China 2 Xi’an University of Architecture and Technology,Xi’an,710055,China 3 Xi'an Jiaotong University,Xi’an,710049,China adahua7723@163.com, bwzhhgd3210@163.com, cshifaen@163.com, drenrushan@163.com Keywords: CFD; Kitchen ventilation; Up-suction hood ; IAQ Abstract.
This study aims investigate and analysis the indoor air quality of kitchen with using CFD numerical analysis method via the velocity, temperature, humidity CO2 concentration .It is concluded that The temperature distribution are large difference in the kitchen and the maximum value is up to 324K on the work area which near the cooking ,and the CO2 concentration which is close to the stove is 1420ppm,1370ppm, 1470ppm respectively, and it is more than the acceptance criteria (CO2<1000ppm) 42%,37% and 47% respectively.
The aim of this paper is to investigate the indoor air quality in commercial kitchen using CFD code and field test in order to probe the factor of IAQ under the condition of natural and mechanical exhaust.
Experimental results.To prove the validity of the simulation results, an experiment was conducted.
Journal of Hebei Institute of Architectural Science and Technology,2005,22(3):24-26 (in chinese) [4] Wan Xiongfeng,Yu Likui and Hou Huabo.The Improvable Strategies of the Influence of Kitchen Fumes to IAQ[J].Building Energy&Environment,2005,24(3):27-31(in chinese) [5] Dahua Jiang, Angui Li, Faen Shi.Numerical Simulation of IAQ under Up-suction Exhaust Hood in Commercial Kitchen[J].

The simulation results obtained are in agreement with the experimental results of Liu et al. [18].
Conclusions 2D simulation of fluidised bed reactor is carried out for biomass gasification in fluidised bed reactor.
Results obtained from the simulation are compared with experimental values.
Bridgwater, CFD modelling of the fast pyrolysis of biomass in fluidised bed reactors.
Shah, Modeling and simulation of an entrained flow coal gasifier.

ayaozq_just@126.com, bonedollar1@sina.com, c249662902@qq.com Keywords: Ducted propeller, PBCF, Hydrodynamic performance, Numerical simulation.
Numerical Simulation Model.
Fig.2 Division of the compulational domain Fig.3 The grids of duck Mesh is the most important process of CFD simulation calculation, its quality directly affects the precision and efficiency of computation.
The analysis of numerical results The validation of numerical simulation.
[3]OU Li-jian, AN Yuan, The Research Based on CFD of Hydrodynamic Performance for Ducted Propeller, Science Technology and Engineering.2010.7

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.

It compares testing methods and recommends CFD simulations for optimization and future real-world testing.
Wenlong Tian [11] explored VAWT configurations for energy harvesting from vehicle wakes using CFD simulations, highlighting the Banki design's power generation potential.
Baowei Song [13] explored Myring equation-based shapes for Savonius turbines, noting a 10.98% peak power coefficient increase with a blade fullness factor of n=1 in CFD simulations.
Through simulation, the CP and CT values closely aligned with experimental data post-model refinement, affirming the reliability of the developed simulation model.
CFD Letters, vol. 13, no. 3, Mar. 2021

Numerical Simulation of Air Distribution and Particle Movement in a Displacement Ventilated Room Zebei Wang 1,a, Baoqing Wang 1,b, Ronghui Chen1,c, Shu Yao1,d College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China a411173744@qq.com, bwbqchina@163.com, c13609223@njau.edu.cn, dmadkon@qq.com Keywords: displacement ventilated room, numerical simulation, air movement, particle distribution Abstract.
In this paper, the air movement and particle distribution in a displacement ventilation room is studied and analyzed through CFD numerical simulation method.
Results and discussions This paper selects two typical surfaces to describe the results of simulation, including X=1.65m which respects the profile through the center of room; X=0.6m which through the virtual human body.
Conclusions A CFD-based ventilation test method is presented in the study.

The final structure parameters were obtained by CFD numerical simulation optimization iterately.
Simulation results show that: The combination vortex pump meet the design requirements.
Numerical simulation and analysis The main geometric parameters of three stage combination vortex pump acquired in table 1.
Then CFD numerical simulation is carried out to optimize the structural parameters of the pump.
“Design and Simulation of Aero-engine High Pressure Centrifugal Pump,” Computer Simulation, vol.28, 2011 pp. 84-87