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Implementation about Virtual Experiment for Development of Local Shockwave Liu Xueweia, Luo Kaib, Yang Yuemingc, Song Liminc, Jin Jun c Aviation University of Air Force,Changchun 130022,China alisong_1@126.com, bliminsong_2012@163.com, climi_2014@sina.com Keywords: Virtual Experiment；Local Shockwave；Aerodynamics；Software Design Abstract: The virtual experiment for development of local shockwave, which is one of a series of virtual experiment software that have been accomplished based on numerical simulation and modern computer technologies by the authors, was taken as an example, the design principles, modules constitution, developing tools, and experiment courses were introduced.
Developing Aerodynamics or Fluid Mechanics virtual experiment software by applying modern CFD[3] and computer technologies, letting students carry on experiments under virtual circumstances, is an effectual approach to solve the above problem, and development and application of virtual experiments will influence practical teaching revolutionarily.
Based on virtual environments (simulation platforms), virtual experiments are focusing on interactive operations and simulation of experimental results[5].The emergence of virtual experiments helps to develop students' learning interest, broaden the students' knowledge, and boost theoretical knowledge studying effectively.
In order to enhance emulational degree, the numerical simulation results based on computational fluid dynamics were corrected by consulting the real experimental results and a variety of professional documents.
The Role of Computer Simulation Experiments in Physics Experiments Teaching.

In Computational Fluid Dynamics (CFD) we have to deal with various types of phenomena with strong discontinuities at different length scales like turbulence or hypersonic flows.
The included methods represent a significant selection of the most commonly used numerical schemes in CFD.
High-order finite-difference schemes for numerical simulations of hypersonic boundary-layer transition.

Numerical Simulation Research on Aerodynamic Characteristics of the Fixed Transition Airfoil Jixiang Shan1,a, Yong Huang1,a, Xiaoyong Ma1,b, Yonghong Li1,c and Jie Bai2,d 1 High Speed Institute, China Aerodynamics Research and Development Center, Mianyang 622661, PRC 2 China Academy of Launch Vehicle Technology, Beijing, 100070, PRC asjx637@163.com, bmxycardc@mail.ustc.edu.cn, clyhxj52@stu.xjtu.edu.cn, dvean_bj@yahoo.com.cn Keywords: numerical simulation, the fixed transition, aerodynamic characteristics, Reynolds number Abstract.
In the paper, the simulation is based on a finite volume formulation of the Navier–Stokes equations.
（a）=0.1 （b）=0.2 （c）=0.5 （d）=0.9 Fig. 5 Effect of the transition position on velocity profile (a=0º, Ma=0.6) Summary The numerical simulation is carried out to investigate the ability of the fixed transition to simulate Re number effect by comparing the aerodynamic characteristics of the test model, flight model and transition model.
Transition modeling for general CFD applications in aeronautics, AIAA 2005-0522,2005

Influence of temperature and mixture stratification on HCCI combustion using chemiluminescence images and CFD analysis [J].
Charge stratification to control HCCI: Experiments and CFD modeling with n-heptane as fuel [J].
The simulation based on CHEMKIN for homogeneous charge compression ignition combustion with on-board fuel reformation in the chamber.

Numerical Simulation of Turbulent Fluid Flow and Heat Transfer Characteristics in Heat
CFD Modeling of a Polymer Solar Collector: Renewable Energy, Vol.35, No.7 (2010), p.1499-1508
A Natural Extension of the Conventional Finite Volume Method into Polygonal Unstructured Meshes for CFD Application: Applied Mathematical Modelling, Vol.20 (1996), p.170-183

The complex finite element model may needs many elements resulting in huge workload, particularly in aeroelastic response calculations which need long time simulation.
On the other hand, CFD method can calculate more accurate aerodynamic performances.
Tip studies using CFD and comparison with tip loss models [J].

Access to high-sulfur gas field blowout accident simulation software interface, users can choose the two types of channels that are simulation with step prompt channel and fast simulation channel, shown in Figure 4.
User-friendly interface, just enter a through numerical simulation of blow-related basic parameters, to complete high-sulfur gas field blowout accident simulation.
Simulation and analysis of the consequences of blowout accident in Kaixian based on Fluent.
FLUENT Fluid engineering simulation and application examples.
Computational Fluid Dynamics Analysis, Principle and Application of CFD software.

NUMERICAL SIMULATION OF LEAKAGE OF OIL IN A SUBMERGED DUCT AND THE BEHAVIOR OF OIL IN A MARINE ENVIRONMENT MOREIRA, Gicelia 1,a, ARAÚJO, Morgana Vasconcellos1,b, BURITI, Cidronia J. de Oliveira 2,c, FARIAS NETO, Severino Rodrigues1,d, LIMA, Antonio Gilson Barbosa 3,e 1Federal University of Campina Grande, Center of Science and Technology, Zip Code 58429-900, Campina Grande, Paraiba, Brazil. 1 Chemical Engineering Department, 2 Process Engineering Post Graduate, 3 Mechanical Engineering Department, agicelia.moreira2009@gmail.com, bmorganamva@gmail.com, cjaneburiti@yahoo.com.br, ds.fariasn@gmail.com, eagblima@pq.cnpq.br Keywords: Computational Fluid Dynamics, submerged pipeline, leakage, CFX.
Therefore, this paper aims to study through numerical simulation the leakage behavior in a pipeline carrying oil in the marine environment using the computational package Ansys CFX®.
The numerical mesh was generated in ICEM CFD 15.0 and has 40510 hexahedral elements.
Table 1: Boundary conditions adopted for simulation Input section in March Output section March Inlet section tube Output section tube Front and back plans Temperature of the fluids (Constant) Speed Uw=0 Static pressure of 1 atm Speed Uo=1.02 e 2.04 (m/s) Static Pressure of 1atm Symetric conduction 298.15 K (25⁰C) Uw = maximum speed of the water, Vo = maximum speed of the oil.
A convergence criterion was adopted of 10-7 kg/s and a time step of 0.01s for a simulation time of 4s.

In order to support this idea, effective C/Si ratio was calculated by a multiphysics simulation software [7] with SiC CVD reaction analysis module [8].
[7] https://www.esi-group.com/software-services/virtual-environment/cfd-multiphysics/ace-suite/ cfd-ace [8] http://www.str-soft.co.jp/product/cvdsim.html

An ideal strategy of operation can be generated by analyzing the results of the simulation.
The most exact approach to model the entire process is the use of Computational Fluid Dynamics (CFD).
Steady CFD simulations are used to increase the quality of the process model like determining the heat transfer by different operation modes.
The mass per charging is increased by 100 kg at every simulation run.
Konferenz ASIM/GI-Fachgruppen: Simulation technischer Systeme, in Lippstadt.