Numerical simulation of shock wave problems with the two-phase two-fluid model

2020 ◽  
Vol 121 ◽  
pp. 103259
Author(s):  
Fayue Liu ◽  
Huandong Chen ◽  
Jiayue Chen
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Fluid Model ◽  
Two Phase ◽  
Two Fluid Model ◽  
Wave Problems ◽  
Two Fluid

Numerical Simulation of the Gas-Solid Flow in a Mini-Riser Reactor

2011 ◽  
Vol 396-398 ◽  
pp. 356-360
Author(s):  
Qun Shuai ◽  
Gen Lin Niu ◽  
Hui Zhao ◽  
Qiang Li
Keyword(s):  
Numerical Simulation ◽  
Kinetic Theory ◽  
Solid Phase ◽  
Fluid Model ◽  
Two Phase ◽  
Operational Conditions ◽  
Riser Reactor ◽  
Two Fluid Model ◽  
Two Fluid ◽  
As Solid Phase

The implementation of the kinetic theory for granular flows added strength to the two-phase flow model in the mini-riser. This model uses simulating and calculating commercial software of Fluent to simulate the mini-riser with 0.012m ID and 3m height. Euler-Euler two fluid model was adopted in two dimensional numerical simulation, according to kinetic theory，the solid stress was calculated based on granular temperature and granular viscosity obtained through simulation which could be used to describe the collision between particles. Simulation results, such as solid phase fraction and solid phase velocity, under different operational conditions basically agree well with the experimental measurement.

Numerical simulation of stratified-pattern two-phase flow in gas pipelines using a two-fluid model

2017 ◽  
Vol 88 ◽  
pp. 30-49 ◽  
Author(s):  
Aline Barbosa Figueiredo ◽  
Renan Martins Baptista ◽  
Felipe Bastos de Freitas Rachid ◽  
Gustavo Cesar Rachid Bodstein
Keyword(s):  
Numerical Simulation ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Gas Pipelines ◽  
Two Phase ◽  
Two Fluid Model ◽  
Two Fluid

Fast and Robust Computation of the Matrix Absolute Value Function: Application to Roe Solver for the Numerical Simulation of Two-Phase Flow Models

2006 ◽  
Author(s):  
Michae¨l Ndjinga ◽  
Anela Kumbaro ◽  
Pascal Laurent-Gengoux ◽  
Florian De Vuyst
Keyword(s):  
Numerical Simulation ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Two Phase ◽  
Absolute Value ◽  
Flow Models ◽  
Two Fluid Model ◽  
Robust Computation ◽  
Two Fluid

The application of the generalized Roe scheme to the numerical simulation of two-phase flow models requires a fast and robust computation of the absolute value of the system matrix. In several models such as the two-fluid model or a general multi-field model, this matrix has a non trivial eigenstructure and the eigen decomposition is often ill conditioned. We give two general algorithms avoiding the diagonalization process: an iterative computation, which turns out to be an exact computation, and an interpolation algorithm which is faster and can handle the case of complex eigenvalues. The knowledge of the characteristic polynomial gives us an easy access to the eigenvalues but however, the iterative scheme can be used with only estimates of the eigenvalues, using for example Gershgorin’s disk localization. We finally show some numerical results of two-fluid model simulations involving interfacial pressure and virtual mass force models.

Numerical simulation of non-isothermal two-phase flow in pipelines using a two-fluid model

2019 ◽  
Vol 173 ◽  
pp. 298-314 ◽  
Author(s):  
Carina Nogueira Sondermann ◽  
Renan Martins Baptista ◽  
Felipe Bastos de Freitas Rachid ◽  
Gustavo Cesar Rachid Bodstein
Keyword(s):  
Numerical Simulation ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Two Phase ◽  
Two Fluid Model ◽  
Two Fluid

Numerical Simulation of Gas Purification by Filtration with Ceramic Filter

2011 ◽  
Vol 356-360 ◽  
pp. 1520-1523
Author(s):  
Hai Xia Li ◽  
Zhan Xu Tie
Keyword(s):  
Numerical Simulation ◽  
Fluid Model ◽  
Simulation Method ◽  
Ceramic Filter ◽  
Phase Flow ◽  
Gas Purification ◽  
Two Phase ◽  
Ceramic Filters ◽  
Two Fluid Model ◽  
Two Fluid

The numerical simulation method is used to analyze the process of gas purification with ceramic filters. The gas /solid two-phase flow field in the ceramic filter vessel was simulated using the Eulerian two-fluid model provided by FLUENT code. The variations of the pressure distribution in the filter cavity were analyzed. The distribution of the dust cake density along the under cleaning filter length was studied.

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