Study on Superalloy Tube Extrusion Process Using Finite Volume Method

2012 ◽  
Vol 572 ◽  
pp. 267-272
Author(s):  
Yi Lun Mao ◽  
Qing Dong Zhang ◽  
Chao Yang Sun ◽  
Xiao Feng Zhang
Keyword(s):  
Mathematical Model ◽  
High Temperature ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Extrusion Process ◽  
Equivalent Strain ◽  
High Temperature Alloy ◽  
Squeeze Pressure ◽  
Tube Extrusion ◽  
Volume Method

In this paper, complexity of the process of high temperature alloy tubing extrusion is studied using the Finite Volume Method (FVM). We establish mathematical model of high temperature alloy tube extrusion process by using the Finite Volume Method. We develop the simulation program by the control equation of the Finite Volume Method and numerical simulation of the key technologies of the axisymmetric problem in cylindrical coordinates. Inconel690 high temperature alloy tubing extrusion process, for example, we got the squeeze pressure in the steady-state extrusion, Velocity field and the corresponding equivalent strain rate field. By comparing the results obtained by the finite volume method and simulation results from Finite Element Method (FEM) software on DEFORM-2D, we find our mathematical model on high temperature alloy tubing extrusion process is reasonable and correct.

Calculation of Flow in Mixing Vessels With Various Turbulence Models

Volume 4 ◽  
2004 ◽  
Author(s):  
Branislav Basara ◽  
Ales Alajbegovic ◽  
Decan Beader
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Turbulence Model ◽  
Unstructured Grids ◽  
Turbulence Models ◽  
Cfd Applications ◽  
Volume Method ◽  
Rushton Impeller

The paper presents calculations of flow in a mixing vessel stirred by a six-blade Rushton impeller. Mathematical model used in computations is based on the ensemble averaged conservation equations. An efficient finite-volume method based on unstructured grids with rotating sliding parts composed of arbitrary polyhedral elements is used together with various turbulence models. Besides the standard k-ε model which served as a reference, k-ε-v2 model (Durbin, 1995) and the recently proposed hybrid EVM/RSM turbulence model (Basara & Jakirlic, 2003) were used in the calculations. The main aim of the paper is to investigate if more advanced turbulence models are needed for this type of CFD applications. The results are compared with the available experimental data.

Numerical Simulation of Aluminum Extrusion Process Using Body-Fitted Grids Based Finite Volume Method

2014 ◽  
Vol 602-605 ◽  
pp. 64-68
Author(s):  
Yu Jie Zhang ◽  
Xiao Feng Gong ◽  
Rui Wang ◽  
Xiao Qing Feng
Keyword(s):  
Finite Volume Method ◽  
Finite Volume ◽  
Initial Conditions ◽  
Effective Strain ◽  
Mathematic Model ◽  
Extrusion Process ◽  
Aluminum Extrusion ◽  
Computational Region ◽  
Coordinate Conversion ◽  
Volume Method

A mathematic model of aluminum extrusion process using body-fitted grids based finite volume method was studied and established in this paper. The basic goverment equations of the finite volume method were built, body-fitted grids were used to mesh computational region, basic goverment equations were discretized on body fitted grids directly, so complex coordinate conversion was avoided by no use of aptamer coordinate system. Initial conditions, boundary conditions and calculation processes of aluminum extrusion process finite volume method were studied and established, a program had been written based this model and a typical process of aluminum extrusion was simulated, amount of physical fields such as velocities, effective stress and effective strain rate etc. were obtained, the results were compared with that simulated by finite element method, so the feasibility and exactness of the mathematic model is proved.

scholarly journals Extrusion Process by Finite Volume Method Using OpenFoam Software

2011 ◽  
Author(s):  
Marcelo Matos Martins ◽  
Jose Divo Bressan ◽  
Sergio Tonini Button ◽  
Alojz Ivankovic ◽  
Francisco Chinesta ◽  
...  
Keyword(s):  
Finite Volume Method ◽  
Finite Volume ◽  
Extrusion Process ◽  
Volume Method

FVM Simulation of Porthole Die Extrusion Process for a Large Caliber Aluminum Tube Profile

2015 ◽  
Vol 778 ◽  
pp. 116-119
Author(s):  
Rui Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Extrusion Process ◽  
Aluminum Tube ◽  
Porthole Die ◽  
Aluminum Profile ◽  
Volume Method ◽  
Aluminum Profile Extrusion

Aiming at the aluminum profile extrusion process of a large caliber aluminum tube with porthole die, this paper established the simulation models by using finite element method and finite volume method, respectively. The extrusion process was simulated by using the above two models. The advantages and disadvantages and the applicability of the two simulation methods in simulating large aluminum profile extrusion processes were compared. It is concluded that finite volume method is more suitable than finite element method for simulating aluminum profile extrusion processes with a severe deformation. In addition, the distributions of stress and strain and the material flow patterns in the large caliber aluminum tube extrusion process with porthole die were given in detail. The results can provide useful theoretical guidelines for the process and die design as well as process parameter optimal selection for large aluminum profile extrusion processes with porthole die.

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