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Numerical simulation with CFD is employed to reduce the cost and shorten the design period.
In this paper, five different grid numbers are selected for the numerical simulation.
The flow simulation of a lowspecific speedhigh-speed centrifugal pump.
The effects of computational domain and several keyissues on CFD simulated results for centrifugal pumps.
CFD simulation of 3D flow in large-bore axial-flow pump with halfelbow suction sump[J], J Hydro, Ser.

Applying computational fluid dynamics method (CFD), we can take numerical simulation for the flow around the propeller.
On the other hand, the hydrodynamic performance of the propeller is calculated based on ANSYS ICEM CFD software, which is a powerful pre-processing software and it can provide high quality meshes for the mainstream CFD software(FLUENT CFX etc), making the result more accurately[4].
Propeller CFD Model Geometric Modeling.
Pressure Contour: In the CFD-Post, making advance coefficient of 0.452 (the corresponding speed of 10 knots) is an example to analyze pressure nephogram of propeller, as shown in figure 6 and figure7 respectively.
[4] Fujun Wang: Computational Fluid Dynamics Analysis—The principle and Application of CFD Software (Tsinghua University Press, Beijing 2004).

In this paper, we will provide a summary of general purpose computation of GPU, including graphic pipeline, the history of GPU architecture evolution, software environment, as well as the CFD applications on GPU.
The area known as Computational Fluid Dynamics (CFD) is one of the most prominent areas in scientific computing.
Because of the high computational requirement of solving N-S equations, researchers tried to map vary of CFD solvers to GPU.
By examining single- and multi-GPU lattice-Boltzmann simulations with ANOVA, they showed that all the lattice-Boltzmann simulations primarily depend on effects corresponding to simulation geometry and decomposition, and not on the architectural aspects of GPU.
In this paper, we provide a summary the GPU computing in CFD applications to guild the development CFD applications on GPU.

Numerical Simulation on Aerodynamically Generated Injection Nozzle Noise Jianping YU1, a, Hong Zhu2.b, Shuping Chen1, b and Xiaosen Zhang 1, c 1 School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, China 2 Environmental resources Institute，Northwest Research Institute of Mining & Metallurgy ayujp@lut.cn, bzhh973201@163.com, cChengsp@lut.cn, dzhangxs@lut.cn Keywords: Numerical simulation, Injection Nozzle, CAA, Abstract.
Hence the results based on the CFD method are reliable and can be used to industrial applications.
The main purpose is verifying the accuracy of CAA theory model by comparing the simulation results and experiment data.
The comparation of noise between the simulated result and tested result :Fig.8 and Fig.9 shows the contours of noise which is calculated by numerical simulation.
Hence the results based on the CFD method are reliable and can be used to industrial applications.

Analysis of Numerical Simulation and Performance Prediction in Centrifugal Pump for Warship Jun Wang1 1Jiangsu University of Science and Technology, Institute of Energy and Power Engineering, Zhenjiang, Jiangsu 212003 China Keywords: Centrifugal Pump; Test System; Numerical Simulation; Performance Prediction; Abstract: Through the ship flow field of centrifugal pump that can be numerical simulation of three-dimensional turbulent, the paper reveals the pump flow pressure and velocity distribution.
In recent years, with the development of computer numerical simulation technology, people began to determine the fluid flow in a centrifugal pump impeller with numerical simulation technology, analyzing the field distribution of the impeller internal pressure, velocity, understand the flow impeller.
Performance prediction of centrifugal pump flow, head, efficiency and other performance parameters by using CFD technology, through the analysis of fluid flow in impeller of law, adopt effective measures, hydraulic model of centrifugal pump to optimize the design, improve the flow, improve the performance of centrifugal pump, centrifugal pump vibration and noise reduction.
In conclusion, the application of CFD technology in the design of the hydraulic model can effectively reduce the number of early model making and test, shorten the product design cycle, and reduce design costs.
Analysis of computational fluid dynamics principle and application of -CFD software.

Numerical Simulation of Magnetostriction-Induced Cavitation Flow Dongsheng Xia1,a, Yan Yu1,b and Huichen Zhang1,c 1Department of Mechanical Engineering, Dalian Maritime University, Dalian 116026, China axia@dlmu.edu.cn, byyan_apple@sina.com, chczhang@dlmu.edu.cn Keywords: Computational Fluid Dynamics, Numerical Simulation, Magnetostriction Apparatus, Ultrasonic Cavitation Flow, Cavitation Erosion Abstract.
Recently, with development of computational fluid dynamics (CFD) and progress of cavitation model, numerical simulation becomes an available and effective approach to research the ultrasonic cavitation flow.
The structured grids were created by using ICEM CFD.
Prior to simulation of the unsteady cavitation flow, the steady flow computation without considering vibration of the specimen was carried out and the computational result was used as the initial flow field of the unsteady cavitation-flow computation.
Conclusions The “full cavitation model” with the SST k-ω turbulence model was applied to simulate the magnetostriction-induced cavitation flow by the CFD software Fluent.

Researcher could resolve it by adopting the latest Computer Fluid Design (CFD) airbag simulation technique which have a better simulation result of OOP load, since CFD method provide more realistic airbag deployment simulations especially in the first few milliseconds which are significant in OOP test.
Ruff et al. [28] and Haufe et al. [29] also agreed that CFD did provide more realistic airbag deployment simulations especially in the first few milliseconds which are significant in OOP test.
However, it may need more effort in setting up the simulation model.
Recently, Potula et al. [32] using CFD simulation method, called smooth particle hydrodynamics (SPH) in LS-Dyna to evaluate the safety of occupant when side curtain airbag deployed either occupant is in-position or OOP.
By adopting latest CFD airbag simulation methodology, simulation result of OOP load case are more accurate, since CFD method provide more realistic airbag deployment simulations especially in the first few milliseconds which are significant in OOP test.

Song et al. [21] experimented with school buildings using Computational Fluid Dynamics (CFD) simulation, which conducted FLUENT software to simulate and prove the ventilation performance in the classroom.
While many studies have been conducted using CFD simulation for flow energy that improves the analysis plays a vital role in evaluating the thermal analysis and validating the experimental result [22-26].
Meng, “The improvement of ventilation design in school buildings using CFD simulation,” Procedia Engineering, vol. 121 (2015): 1475–1481
CFD Letters 12, no. 2 (2020): 11–21
CFD Letters, vol. 12, no. 2 (2020): 22–45

The flow simulation emulated the Cedval A1-1 single-building experiment and the concentration distribution for two scenarios was synthetically produced by simulation.
When pollutant releases occur over urban sites Computational Fluid Dynamics (CFD) is usually applied to solve the dispersion model.
CFD can naturally include complicated boundary geometries, initial conditions, chemical reactions, deposition processes, etc.
The model implementation is performed within the CFD commercial software Ansys Fluent.
The flow simulation emulates the Cedval A1-1 single building experiment [7].

Simulation Study on Heat Insulating Material used in Refrigerated Cargo Hold Shipboard of Fishing Vessel Jingfu Jia1, a, Wei He1, b 1Ocean College of Hebei Agricultural University, Qinhuangdao, Hebei, 066003, China ajjf0369@163.com, bhappyheyusong@sina.com Keywords: Heat Insulating Material, Refrigerated Cargo Hold of Fishing Vessel, Shipboard, Steady State Three-dimensional Heat Transfer, Numerical Simulation, Heat-transfer Property.
After defining the boundary conditions of the model according to the heat-transfer process of the shipboard, numerical simulations with different heat insulating material are performed using computational fluid dynamics (CFD) software PHOENICS.
Numerical simulations with different heat insulating material are performed using CFD software PHOENICS and the obtained temperature distributions are analyzed.
Simulation results and analyzing Simulation results of the heat-transfer model.
When fiberglass, polystyrene foam or rigid polyurethane foam is used as the heat insulating material of the model respectively, and the other simulation conditions are not changed, numerical simulations of the heat-transfer model of the shipboard are performed using PHOENICS software.