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Numerical Simulation on Aerodynamics of Ramjet Projectiles Jiaxian Zhanga, Yanna Wang, Ruimin Liu Beijing Institute of Aerospace Testing Technology, Beijing 100074, China acallingxh@gmail.com Keywords: Projectile; Ramjet; Aerodynamics; CFD; TVD Abstract: Three-dimensional Reynolds-averaged Navier-Stokes simulations have been performed to explore the aerodynamic characteristics of ramjet projectiles.
The complex wave structures of ramjet projectiles with different architecture at different inflow Mach number were achieved by numerical simulation.
As a key segment of research on ramjet projectiles, numerical simulation on aerodynamic characteristics are very important.
Computational Approach With decades of development, present CFD approaches can predict the aerodynamic characteristics of vehicles accurately.
Numerical simulation on ramjet inlet with different cowl leading edge, AIAA 2005-5288

Numerical simulation for unsteady flow around the vertical axis wind turbine (VAWT) was performed through computational fluid dynamics (CFD) software Fluent, which was based on the UDF controlled sliding meshes method.
With using wind tunnel test and CFD two methods respectively to simulate the air dynamics performance of small VAWT, the results showed the two dimensional simulation result is significantly higher than experimental and three dimensional simulation [4].
Turbulence Model The turbulence model used in CFD calculation is SST k-ω model, it mixed the advantages of the model and model, and it also merges the cross diffusion derived from the equation.
Numerical Simulation for 2D Unsteady Flow Around the Vertical Axis Wind Turbine.
Numerical simulation of aerodynamic noise radiated form vertical axis wind turbines.

This simulation model provides an effective platform for vehicle thermal management analysis.
Simulation Engine input dates.
By the CFD instead of the wind tunnel, we get air characteristic parameters [5], which will help the KULI [4] as shown in Figure 2 and 3.
Fig2.The cabin CFD result Fig3.Air path model of cabin for cooling module.
It is steady simulation that the temperature is at 30℃.

Study on Flow Field in Different Styles of Blades for Eddy Current Retarder’s Rotor Based on CFD Shen Jianming 1,a, Liu Chengye 2,b 1Changzhou Institute of Light Industry Technology, Changzhou 213164, China; 2 School of Mechanical & Automobile Engineering, Jiangsu Teachers University of Technology, Changzhou 213001, China aSjmczjs68@163.com, blccyyyy@163.com Key words: Automotive engineering, Eddy current retarder; Flow field; CFD; RNG Κ-εmodel Abstract.
Velocity and pressure distribution in the flow field among blades is accepted by using CFD(Computational Fluid Dynamics), and this method can improve design precision and decrease error due to experiential design, meanwhile above method is favor for structure selection of the blade.
References [1] Yi Fengyan, Yu Mingjin, Liu Chengye. 3D Numerical Simulation of Eddy Current Brake[J].
Journal of System Simulation, 2010,22(7):1592-1595 [2] Liu Chengye.

JSC “VNIIAEN” have carried out this numerical calculation together with LLC “HMS Group Management” using license software ANSYS ICEM CFD and ANSYS CFX.
Computational domain of the pump ANSYS ICEM CFD was used for generating computational mesh.
Standard k-ε turbulence model with scalable wall functions was used for simulation of turbulent flow.
The results of steady state simulation were used as initial conditions for transient simulation.
Fig. 3 shows the head change at operating duties of 1.0Qnom and 0.5Qnom at transient simulation.

Research on the Lithium Battery Pack Cooling by Thermal Simulation Yining Chen1, a, Ceyuan Li2, b 1 Power Management of Liaoning Provincial Government, Shenyang 110035, China; 2State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China.
This paper designs the battery pack cooling system, using CFD simulation software to study the effects of battery pack cooling structure on the battery pack temperature field.
Figure3 is a lithium battery serial cooling temperature field simulation, the simulation discharge current is set as 120A, the convective heat transfer coefficient is 10w/m2.k, air is from the left into the battery pack.
Fig.4 Arrangement relationship between batteries and battery box Fig.5 Battery pack and air field simulation model This paper study temperature field of the design of the thermal structure by the CFD simulation, the simulation results show that although this structure can effectively reduce the temperature of the battery pack, but can cause the temperature dead zone of battery pack.
Fig.9 Battery pack and air field simulation model Thermal model experimental verification Figure 11 is the comparison chart of monitoring points temperature obtained by experiment and ANSYS simulation results of lithium battery pack, simulation and experiment conditions are set Consistent : discharge current is120A, time is half an hour, cooling wind speed is 5m/s.

The Numerical Simulation and Research and Application of Energy-Saving Effect of Hot Air Curtain Jet Velocity of The Dining Room Kunru Ma1, a, Xin Wang2,b 1,2,the Civil Engineering College, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, China amakunru@163.com, bwangxinlove7@163.com Keywords: Dining Room Door, Air Curtain, Jet Velocity, Numerical Simulation, Energy-Saving Abstract:There are often people and goods in and out of the dinning room door, so the door is often open.
Then set up physical model for wind pressure, multiply of hot pressure and the local hot pressure at the dinning room door of the air curtain air flow in CFD method.
To adopt finite volume method, use CFD software fluent.This paper selects the second order wind format to discrete partial differential equation, solution of the stress field adopt SIMPLE algorithm proposed by Spalding and Patankar[4].
The numerical simulation of the hot air curtain energy saving effect of the dining door Simulation conditions：30°，=40˚C，the other conditions same as above.
Conclusion Through establish the mathematical physics model of the hot air curtain, and the numerical simulation, this paper analysis the air curtain velocity field, temperature field, heat loss, calculation heat load parameters ,etc.

askiranram@gmail.com, bupendra4nits@gmail.com, cak.dey@cit.ac.in Keywords: Computational fluid dynamics (CFD), Reynolds stress model, secondary flow, vortices.
In this paper Computational fluid dynamics (CFD) is used to study the meandering bend of the Barak River.
Large eddy simulation (LES) model were used to predict the secondary flows at the outer bank cell [10].
The commercially available CFD software Ansys FLUENT version 14 was used to study the velocity and vorticity fields at the critical channel sections (50, 60, 70, 80, 90and 100).
Booij, Measurements and large eddy simulations of the flows in some curved flumes, J.

This model can produce a fairly realistic simulation under most conditions [5].
When the thermal program is used to carry out a heat transfer analysis through linking the elements to the results of the CFD model, transmission of the thermal environment calculated by the CFD to the structure analysis program is reach.
Because the zone fire model is suitable for simulation of the general office and residential building, this system (RCfire) applies the zone fire model (CFAST) to produce a fire simulation.
As a result, a heat transfer analysis can be done through linking the elements to the results of the CFD model, and transmission of the thermal environment calculated by the CFD to the structure analysis program is reach.
Fiber beam element model for the collapse simulation of concrete structures under fire.

Selective Laser Melting of Titanium Alloys: Simulation of Scanning Speed Effects with High Layer Thickness Piyapat Chuchuay1,a*, Kawintra Khemabulkul1,b, Patiparn Ninpetch2,c and Pruet Kowitwarangkul1,d 1The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand 2Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand aPiyapat.c@tggs.kmutnb.ac.th*, bKawintra.thbkk@gmail.com, cPatiparn.n@en.rmutt.ac.th, dPruet.k@tggs.kmutnb.ac.th Keywords: Additive manufacturing, SLM, Ti-6Al-4V, DEM-CFD Simulation, High layer thickness Abstract.
Numerical Setup and Case Scenarios The Multiphysics simulation of the SLM process in this research was conducted using DEM-CFD (Discrete Element Method - Computational Fluid Dynamics) software, specifically FLOW-3D AM, with Ti-6Al-4V as the material.
Material properties used in the simulation [11].
This STL file was then uploaded to the CFD software FLOW-AM to simulate the temperature distribution and analyze the size and shape of the part after fabrication.
Comparison between simulation and experimental results.