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To study the effects of guide vane with different vane wrap angles and relative positions of outlet edge on hydraulic performance of nuclear reactor coolant pump, three-dimensional steady numerical simulations were performed by using CFD commercial software Numeca.
Numerical simulation is performed with the two key design parameters optimized through surrogate model, the internal flow field is improved and then the hydraulic efficiency is improved.
In view of this, the paper established the nuclear main pump model with different vane wrap angles and relative positions of outlet edge, and each model is simulated by using commercial CFD software NUMECA, which is widely used in the field of turbo-machine.
Table 2 shows that optimization result from the surrogate model is close to the CFD calculations one, so surrogate model can be considered to meet the requirements of the precision.
Finally, through numerical simulation, it verified the feasibility, rapidity and rationality of the surrogate model optimization method.

This requires the computational fluid dynamics (CFD) approach be utilized.
In this work, the widely recognized CFD package CFX was used for the objective.
To use CFX to solve the CFD problem based on Eq. (1-4), the boundary conditions are considered.
Mizo: Three-dimensional numerical simulation of viscous flow around circular cylinder, Journal of Shanghai Jiaotong University, Vol. 35 (2001), No. 10, pp. 1464- 1469
Fletcher: Numerical simulations of gas flow patterns within a tall-form spray dryer, Chemical Engineering Research & Design, Vol. 79 (2001), No. 3, pp. 235-248

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.

The present paper investigates the method to optimise the header of a 680 kW radiator to reduce the maldistribution in its passages using Computational Fluid Dynamics (CFD).
The 3D CFD method was used to predict to find the effect of maldistribution on thermal hydraulic performance of heat exchangers with varying longitudinal and transverse tube pitch and fin pitch.
Methodology Optimisation of header was carried out by CFD studies using ANSYS workbench 15 software.
It is very difficult to carry out simulations with complete radiator using exact fin configuration.
Entechev, 3D CFD study of the effect of inlet air flow maldistribution on plate-fin-tube heat exchanger design and thermal–hydraulic performance, International Journal of Heat and Mass Transfer. 101 (2016) 527–541

3D CFD Based Optimization Technique for Muffler Design of a Motorcycle Mohammad Ahsan Habib1,a*, Md.
To measure the back pressure 3D CFD based CAE software has been used.
Middlberg et al. present different configurations of simple expansion chamber mufflers, including extended inlet or outlet pipes and baffles have been modeled numerically using CFD in order to determine their acoustic response [8].
In summary, most of the research studies are based on the formulation of mathematical equation and its virtual simulation and trial and error method.
By using the above mentioned simulation conditions and different muffler design ANSYS simulation (Fig. 3) is conducted and the back pressure values are tabled in Table 3.

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.

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

This paper uses Computational Fluid Dynamics (CFD) software FLUENT to study the flow field of oil air, and different air pressure and nozzle throat size are discussed.
Many scholars research the nozzle used Computational Fluid Dynamics (CFD).
Dong [4] studied a new kind of two-stage atomizing high pressure spray nozzle used CFD, and the two-stage atomizing nozzle were optimized successfully.
Jeyakumar [6] studied the flow pattern of atomizing gas in the atomization process used CFD.
This paper used CFD software FLUENT to study the flow flied of oil air jet, and the diameter distribution at different air pressure and throat diameter of the nozzle.

The 109 papers are grouped as follows:
Chapter 1: Designing and Manufacturing in Mechanical Engineering
Chapter 2: Dynamics and Vibration of Machines and Mechanisms
Chapter 3: Fluids and Thermal Engineering
Chapter 4: Researching and Designing of Internal Combustion Engine
Chapter 5: Instrumentation, Monitoring, Control Systems and Automatics
Chapter 6: Materials and Materials Processing in Mechanical Engineering
Chapter 7: Computational Techniques for Simulation and Numerical Analysis
Chapter 8: Researching and Designing in Aerospace Engineering Keywords Ed: Applied Mechanics, Design and Manufacturing, Material Characterisation and Modeling, Dynamics and Vibration, Computational Techniques, Simulation and Numerical Analysis, Fluid Dynamics and CFD, Instrumentation, Monitoring, Control Systems and Automatics, Aerodynamics and Aerospatial Applications, Thermal Analysis, Energy Efficency and Applications, Motors, Combustion and Propulsion

The model was created and simulated under various pressures and temperature with a constant mass flow rate by using fluent CFD and the influence of the single pass flow channel on the performance of PEM fuel cell has been investigated.
Generally the trend is going to do the analysis of PEM fuel cell with various flow field designs and their influence using Computational Fluid Dynamics (CFD) [6].
The second step involved, creating the mesh from the geometry using ICEM CFD 14.0 (a module of Ansys 14.0).
In order to solve the myriad of equations associated with a fuel cell simulation, the entire cell was divided into a finite number of discrete volume elements or computational cells.
The simulation has been solved simultaneous equations like conservation of mass, momentum, energy, species, Butler–Volmer equation, Joule heating reaction and the Nernst equation to obtain reaction kinetics of PEM fuel cell, namely mass fraction of H2, O2, and H2O, temperature, static pressure and current flux density distribution on flow channel.