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Secondly, a three-dimensional numerical simulation on the oscillatory fin was performed by computational fluid dynamic (CFD) to investigate the interaction with the surrounding fluid and the propulsive force production.
The experimental results accord with the CFD results well.
Kinetic model Fig.4 Action simulation by CFD Fig.5 Thrust force simulated by CFD CFD method Based on the dimension of the pectoral fin, a zero thickness initial geometrical model was set up.
In the present work, the governing equations with the above-described computational domain and simulation setup are solved by FLUENT (version 6.2).
The experimental results accord with the CFD result very well.

The simple prediction method of DRS by CFD simulation used in the previous study was applied and evaluated in terms of the coefficient of variation C.V., static pressure recovery coefficient CP, and total pressure loss coefficient CT in the diffuser flow channel.
The objective of this study was to investigate design parameters such as the slit position, width, and height that minimize performance degradation while maximizing DRS suppressed effect by CFD simulation using a simple prediction method for DRS onset [10]. 2.
Simulation model and setup In this study, steady-state RANS simulation was performed using ANSYS CFX2022R2.
The simulation model used is the same as in the previous study [8].
Conclusion In this study, the design parameters of the diffuser vane slit were comprehensively investigated in CFD simulation for the slit position, width, and height.

Simulation and Modeling of Compression Stroke in Diesel Engines Ph.D.
Student, Iulia Luminita Baboiu2 1Constanta Maritime University, Constanta, Romania 2Constanta Maritime University, Constanta, Romania 1mahrandawwa@gmail.com, 2Iuliab88@gmail.com Keywords: CFD, polynomial functions, compression stroke, Diesel engines.
The objective of this study is to simulate the compression stroke in diesel engines by using computational fluid dynamics (CFD), and to model the compression stroke by using thermodynamic equations for Ideal gases and polynomial function that fits thermodynamic data of JANAF tables.
The simulation part will be performed using ANSYS ICE software.
Simulation and modeling process will be carried out between the intake valve close (IVC) and top dead center (TDC), the results of simulation and modeling will be compared and discussed.

China atjqin@tongji.edu.cn (corresponding author), bliaoxin808909@hotmail.com, canneliuyuanyuan@gmail.com, dzhqing@tongji.edu.cn, esun1979@sina.com Keywords: mechanical structure, local wind field, CFD Abstract.
In this paper, the local wind field of a container terminal in Shanghai of China was simulated by CFD technique, and the corresponding spatial distribution of wind velocity, turbulence intensity and wind profile were investigated in detail.
The results of the simulation suggest that the local surrounding wind field of the investigated container terminal is remarkably influenced by the surrounding container ship and container piles.
Fig.2 Schematic of a container terminal Fig.3 Meshed inner region and the definition of wind angle The computational domain of CFD was divided into two regions, i.e. the inner region and outer region, with the inner one surrounded by the outer one.
These simulation results suggest that it is not reasonable to use a constant power function index for the entire local wind field surrounding the port machinery.

The efficiency of filling the moulds can be improved by using Computational Fluid Dynamics (CFD) filling simulations during the design of the mould.
As part of an on-going effort to develop a CFD tool for the simulation of LCM processes, a volume averaged energy balance equation has been derived and implemented in a custom OpenFOAM solver.
CFD simulations are sometimes used in the design of the mould or in the planning of the manufacturing process to predict the flow of the liquid matrix inside the mould.
The software packages used for such filling simulations include specialised tools such as PAM-RTM, RTM-Worx and LIMS and general-purpose CFD tools such as ANSYS FLUENT and CFX, Simulia abaqus/CFD, COMSOL Multiphysics and OpenFOAM to name a few.
{ keff∇⟨T⟩ } + SE (3) Implementation in OpenFOAM In order to study the importance of the pressure terms in Eq. (1), we need to implement Eq. (1) both with and without the terms in question in a CFD solver having all the characteristics mentioned in the introductory section and compare the simulation results with results from experiments.

CFD Research Methods CFD is a computational fluid dynamics for short, with the development of computer technology, all the issues involved fluid flow, heat exchange, molecular transport and other phenomena, can now be solved by means of CFD [2].
Three-dimensional digital modeling The CFD model study starting in the induced draft fan outlet and ends at GGH entrance.
Meshing and boundary conditions The grid is geometric forms of expression CFD models also support simulation and analysis.
Mesh quality has an important impact on the CFD computational accuracy and efficiency [5].
For complex CFD problems, mesh generation is extremely time-consuming and error-prone, time mesh generation is often greater than the time required for CFD calculations.

aammar@ump.edu.my, bsurayanurul@gmail.com, califadam15@yahoo.com Keywords: CFD, MHP, Archimedes Screw, Particle prediction Abstract.
For this reason, computational fluid dynamics (CFD) methods are used.
Introduction The advantages of using Computational fluid dynamics, CFD is that the researcher can study more on complex problem that is impossible to be done experimentally and the cost to do the project is also decrease as the researcher just need to set-up the simulation.
“CFD simulation of particle distribution in stirred vessel“,2000
Mϋller. “ CFD Modelling and validation of measured wind field data in a portable wind tunnel”, 2011.

The flow-force on poppet valve in the case of the converging flow is simulated and studied by CFD.
Simulation results represent that the traditional formula for computing the flow-force can be used only in the certain range, so the formula is modified based on the simulation result.
Geometry of Poppet Valve Through the CFD flow simulation result, the relationship of the valve port structure and flow pattern is studied from a flow field microscopic perspective.
Fig6 is the simulation result of the flow-force for the different pressure difference and the different opening position.
Figure 7 is simulation result and value computed by the modified formula of the flow-force.

The Laminar Flow Simulation of Variable Diameter GFRP Pipe with Transition Region Yaxuan Wang 1, a, Jing Ji2, b and Shu Zhang 2, c 1College of Engineering Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China 2College of Civil Architecture Engineering Northeast Petroleum University, Daqing, Heilongjiang, 163318, China aE-mail:jijing1977@163.com, bJlqjjdoudou@163.com , cdqzhangshu@126.com Keywords: GFRP, FLOTRAN CFD, Laminar flow, Diversion pipes, ANSYS finite element.
A typical analysis of FLOTRAN CFD includes seven steps: ①The area of problem analysis must be clear; ②The state of the fluid should be defined; ③The finite element analysis grid should be generated accurately; ④Boundary conditions should be exerted on the model; ⑤ The analysis parameters of FLOTRAN CFD are set; ⑥Solving; Reading Results in Post-processing.
The analysis type is designated for FLOTRAN CFD.
Fig.3 Boundary constraint of finite element model for P-2 pipe Analysis of Finite Element Results Figure 4 shows the velocity distribution of four diversion pipes gotten by the finite element simulation.
Conclusions It adopts the FLOTRAN CFD model in ANSYS finite element software to analyze laminar flow of four diversion pipes with transition zone, introduces the process of the finite element analysis in detail, and obtains velocity distributions of four diversion pipes.

The plan and the points of measure CFD Simulation.
Computational Fuild Dydamics Simulation (CFD) was done in the same unit room as the field measurements.
Table 3 is the boundary condition of the CFD simulation.
Fig. 9 shows the comparison between the field measurements and the CFD simulations.
(b) According to the results of CFD simulation, the temperature was higher in the upper part of the room than in the lower part.