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From 1990s, non-continuous helical baffles have been studied increasingly in open-literature [9], but most of researchers were restricted to the computer simulation, that is “CFD” [10, 11], lack of the basis of the reliable experimental data.

[5] Patwardhan Y and Johnson H (2001)“ CFD simulation of jet mixing in water tanks”.

The purpose is that according to the result of the simulation, optimize the structure of the tool and then decrease the difference in temperature of the moulding board.
We should follow the principles when designing the tool: 1）the CTE between the moulding board and composite components should match; 2）when designing the tool, make sure the surface of the moulding board and the part are the same at the temperature of critical stress; 3）Using the theory of CFD and heat transfer, reduce the difference in temperature of the moulding board, improve the quality of the design.

This is inquired through computational fluid dynamics (CFD) simulations in order to guarantee comparable gas flow and temperature uniformity both for 150 and 200 mm substrate format.

The vortex shedding frequency, , is related to Strouhal number , velocity of the current, , and effective diameter of the riser, , as [5] (1) The CFD simulation of circular cross section of the riser produces an averaged drag coefficient of the cylinder, , which could be used to calculate the averaged drag force according to (2) where is the density of the seawater at particular depth depending on the salinity and is the cross sectional area of the riser (constant).

The experiments were designed and interpreted with the assistance of computational fluid dynamics (CFD) simulations.

The renormalization group (RNG ) that was proposed by Yakhot and Orzag[10] overcome this disadvantage through improving ε equation, and provides an analytical formula for the Prandtl Number, so this model can be used in the simulation of strong swirling flow or flow with a complex wall in the spiral centralizer.
Mixture Model Mixture model is mainly used for simulation of two phase flow, it is relatively accurate when the solid particles content of less than 20% at the section.
[4] Yingfeng Meng, Zhanghua Lian, “CFD Numerical Simulation Research on Cutting-Carried Capability in Gas Horizontal drilling”, Natural Gas Industry, vol. 25, no. 7, 2005, pp. 50-52

This improved unstructured dynamic mesh method, coupled with ALE Euler solver, is then applied to simulate unsteady transonic flow about harmonious oscillation of rigid wing and bend-torsion oscillation of high-aspect ratio sweepback wing of High-Altitude-Long-Endurance Unmanned Aerial Vehicles; computational results are in good agreement with those of other literatures and experiments Introduction Simulation complex unsteady flows with moving boundaries, such as free-surfaces, multi-body separation, aeroelastics, forced oscillation and coupling structure-fluid, is a crux in CFD.
[6] Mitsuhiro MURAYAMA, Fumiya TOGASHI, and Kisa MATSUSHIMA.Simulation of Aircraft Response to Control Surface Deflection Using Unstructured Dynamic Grids.
Simulation of flows past multi-body in relative motion with dynamic unstructured method.

In this study, the high temperature tension tests of refractory metals, 3-D nonlinear numerical simulations and motor firing tests were performed to evaluate structural safety factor of the jet vane.
The magnitude and applied point of concentrated force was obtained from CFD results.
Conclusions To evaluate the safety factor of jet vane system, high temperature tension tests of refractory metals, 3-D nonlinear numerical simulations and motor firing tests are performed and conclusions are obtained as follow. 1) Stress-strain curves of refractory metals are obtained successfully to 2000°C by using normalizing method to perform coupled thermal and mechanical stress analysis. 2) High temperature strength of the shaft which supports most of loads applied to the vane decreases rapidly nearby 1400°C, and above the temperature, it is judged that the shaft can not play a major role of structural member. 3) From the comparison of firing tests and numerical results, it is judged that the total stiffness evaluation criterion using relations between the load and shaft displacement is more useful than using the equivalent stress.

The present article discusses the analysis of the results of simulation of NMI flowing out from the liquid steel volume in the mould zone of the steel continuous casting machine (CCM).
For computer simulation, the Computational Fluid Dynamics technique and the FLUENT®, a control volume method-based program, were used.
Boundary conditions and numerical computation procedure Computations and numerical simulations were carried out for two moulds of a cross-section of 160x160 mm and 280x280 mm, respectively.
Rössler, Simulation of Nonmetallic Inclusions in a Continuous Casting Strand, Steel Research International 76 (2005) №. 1, s.64 – 70
Derda, Application of the CFD computing technique to numerical modeling of the continuous steel casting process, Archives of Metallurgy and Materials, Issue 55, Nr 4, 2005, pp.855 – 868