Search results

In this paper, the hull resistance of AUV is calculated by computational fluid dynamics (CFD) software Fluent.
Resistance Calculation In this section, hull resistance is calculated for an AUV with the Myring shape using the commercial CFD software FLUENT.
Figure 2 The geometrical model used in the simulation.
The hull resistance is numerically calculated using the commercial CFD package FLUENT.
(m/s) ΔDαv /Eαv Figure 3 Comparison between the simulation results and the experimental data: where ∆Dαv/Eαv denotes the error in percentage, Eαv denotes the experimental data, and Dαv denotes the simulation results.

Assumptions in Computational Fluid Dynamics (CFD) CFD is the art and science of replacing these partial differential equations with their discretized algebraic forms which when solved give a set of numbers for the flow field at discrete points in time and space, as the case may be, within the flow domain.
CFD is one of the emerging fields for research in dust control area, although, application of CFD methods for solving mine ventilation problems.
Hence, the line-curtain simulation conducted in Model was satisfactory.
Table.2 CFD models evaluating leakage paths along the line curtain.
Freitas: Perspective: Selected benchmarks from commercial CFD codes.

In this process, CFD simulations in ANSYS-Fluent were used to study and optimise the coolant flow in CCCs.
Flow simulation in ANSYS-Fluent 4.
As an intermediate step in the design, the CFD results can be used to test for possible problems and to trial modifications before proceeding to complete simulations of the entire mould.
The CFD simulations were performed using Finite Volume method (FVM) to solve the Navier-Stokes equations in ANSYS-Fluent.
CFD simulations in ANSYS-Fluent were performed to evaluate flow dynamics and distribution in the CCCs.

Based on the computational fluid dynamics (CFD) theory and numerical simulation methods, the seal cavity flow field for the bellows mechanical seal under such the high temperature, high pressure, high-speed as complex working conditions was numerically simulated, and the temperature field, velocity field, pressure field, turbulent kinetic energy and the flow field vorticity distribution of the medium of the seal cavity were obtained, the three-dimensional fluid flow in the seal cavity, the heat transfer characteristics and the impact on the sealing performance were analyzed in this researching.
In this research, the numerical simulation was carried to the seal cavity flow field for the bellows mechanical seal by based on the computational fluid dynamics (CFD) numerical simulation theory and method [3].
Appling the CFD pre-processing software GAMBIT, the cross-section boundary line in X-Y plane was drawn and create a flat boundary with which firstly, and then a body was generated by revolving the plane around the X axis, and finally the 3-D numerical model of the seal cavity flow field was built up by boolean operators with the import, export part.
The iterated operation was applied after initializeing the flow field, the numerical simulation of the fluid flow and heat transfer for the whole seal cavity flow field were realized by terative convergence.
Hendricks: Computational studies of flow and pressure distributions in a spiral groove seals, the 9thAnnual Conference of the CFD Society of Canada, Vol. 27-29 (2001) [5] Braun M.J., Kudriavtsev V.V., Hendricks R.C: the Three Dimensional Navier-Stokes Simulation of Flow in A Passive-Adaptive Finger Seal, the 9th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu , Hawaii, Vol.10-14(2002) [6] Zhaogao Luan, Khonsari M.M: Numerical Simulations of the Flow Field around the Rings of Mechanical Seals, Journal of Tribology, Vol.559-565(2006) [7] Braun M.J, Piercon H.M.: Thermo-fluids Consideration and the Dynamic Behavior of a Finger Seal Assembly, Tribology Transactions, Vol.531-537(2005)

A recent application of Computational Fluid Dynamics (CFD) to calculate the air flow field in an IR oven can be found in [9].
In this work, we propose a CFD approach for simulation of both natural and forced convection that occur inside an industrial oven, aiming to more precise prediction of the convective heat transfer along the preform height.
Heating simulation.
In order to evaluate the proposed approach, CFD simulations are compared with classical heat transfer coefficient correlation for vertical thin cylinder proposed in [10].
Both the natural and forced convective conditions that occur inside the industrial oven are considered using a CFD approach.

Research Methods Comparison between Experiments and CFD Simulation.
With the development of computer technology, CFD simulation technology is quite widely used in all walks of life.
The CFD simulation (FLUENT) where the two-equation model is a model of the standard k-ε is also adopted in this paper.
Fig.2 Comparison between experiments and CFD simulation From Fig.2, we can draw a conclusion as follows.
Therefore, CFD simulation is an effective way to simulate various operation conditions with less cost.

However, CFD simulation ,as inseparable part of engine design, has helped researchers and engineers to overcome these problems.
Engine designers take advantage of CFD simulations to develop better understanding of different stages of engine cycle to be able to make engines satisfy stringent emission and fuel consumption standards[3].
The mesh that is used in the CFD simulation is shown in Fig.2 The mesh is generated by ICEM-CFD.
Validation of CFD model B.
Amount of CO emission at the end of engine cycle Conclusion A CFD simulation of whole engine cycle is presented using KIVA-3V.

In this paper, a parametric modeling and simulation method is proposed, which provides a virtual simulation test environment for photovoltaic radar.
With this system, the integration of CAD/CFD application is achieved.
CAD/CFD System Design There are many problems in application of parametric modeling and simulation, because factors involved in it are complex.
Then, aerodynamic simulation of launch vehicle is performed automatically.
Conclusion Based on secondary development of commercial CAD/CFD tools, an application-oriented integrated design system for aerodynamic design o is established.

OpenFOAM is the open-source CFD software package which utilizes the finite volume method.
It can be reason of difference between the CFD results and the experimental data.
The comparison of two results of numerical simulations with the experimental data [8] is shown.
Both simulations were solved using the solver rhoSimpleFoam.
The simulation with the implemented model predicts ζ = 0.028.

Fortunately, the CFD numerical simulation is high up in the pictures not only in aircraft design aspect but in analyzing the aerodynamic force of refueling hose [2].
Using the CFD software platform Probe-Drogue equipment three-dimensional graphics and grid are drawn, and then the aerodynamic parameters which are deeded for aerial refueling modeling are gotten by numerical simulations [2].
Summary This paper describes the CFD modeling process of Probe-Drogue aerial refueling equipment, through fluid engineering simulation a series of aerodynamic parameters are obtained.
For comprehensive analysis of the refueling hose and its surrounding environment, the CFD modeling and simulation are achieved in particular airspeed, inlet of and flow angle, which provides the necessary reference for the following aerial refueling model.
[5] Zhanzhong Han, Jing Wang, Xiaoping Lan FLUENT - Examples and applications of fluid engineering simulation (second edition) [M].