Numerical Simulation of Two-Phase Flow in Injection Nozzles: Interaction of Cavitation and External Jet Formation

2003 ◽  
Vol 125 (6) ◽  
pp. 963-969 ◽  
Author(s):  
Weixing Yuan ◽  
Gu¨nter H. Schnerr
Keyword(s):  
Numerical Simulation ◽  
Boundary Conditions ◽  
Strong Interaction ◽  
Two Phase Flow ◽  
Nozzle Flow ◽  
Phase Flow ◽  
Jet Formation ◽  
Two Phase ◽  
Internal Problem

The present investigation demonstrates the strong interaction of cavitating nozzle flow with the outside jet formation. Due to the strong sensitivity of cavitation on the imposed boundary conditions, simulations with restriction on the internal problem are qualitatively and quantitatively incorrect, so that phenomena like hydraulic flip and supercavitation cannot be revealed. Our results indicate the potential of cavitation for enhancement of atomization and spray quality.

Optimization of Two-Phase Flow in Injection Nozzles: Interaction of Cavitation and External Jet Formation

2002 ◽  
Author(s):  
Weixing Yuan ◽  
Gu¨nter H. Schnerr
Keyword(s):  
Boundary Conditions ◽  
Strong Interaction ◽  
Two Phase Flow ◽  
Nozzle Flow ◽  
Phase Flow ◽  
Jet Formation ◽  
Two Phase ◽  
Internal Problem

The present investigation demonstrates the strong interaction of cavitating nozzle flow with the outside jet formation. Due to the strong sensitivity of cavitation on the imposed boundary conditions, simulations with restriction on the internal problem are qualitatively and quantitatively incorrect, so that phenomena like hydraulic flip and supercavitation cannot be revealed. Our results indicate the potential of cavitation for enhancement of atomization and spray quality.

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel

2012 ◽  
Vol 33 (1) ◽  
pp. 63-71
Author(s):  
Jarosław Sowiński ◽  
Marek Krawczyk ◽  
Marek Dziubiński
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Boundary Conditions ◽  
Flow Pattern ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Computational Domain ◽  
Two Phase ◽  
Ansys Fluent ◽  
Satisfactory Description

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel The aim of the study was the implementation of a numerical simulation of the air-water two-phase flow in the minichannel and comparing results obtained with the values obtained experimentally. To perform the numerical simulations commercial software ANSYS FLUENT 12 was used. The first step of the study was to reproduce the actual research installation as a three-dimensional model with appropriate and possible simplifications - future computational domain. The next step was discretisation of the computational domain and determination of the types of boundary conditions. ANSYS FLUENT 12 has three built-in basic models with which a two-phase flow can be described. However, in this work Volume-of-Fluid (VOF) model was selected as it meets the established requirements of research. Preliminary calculations were performed for a simplified geometry. The calculations were later verified whether or not the simplifications of geometry were chosen correctly and if they affected the calculation. The next stage was validation of the chosen model. After positive verification, a series of calculations was performed, in which the boundary conditions were the same as the starting conditions in laboratory experiments. A satisfactory description of the experimental data accuracy was attained.

Numerical Simulation of Erosion and Flow Behaviour in Nozzle

2013 ◽  
Vol 467 ◽  
pp. 420-424
Author(s):  
Si Chen ◽  
Zun Ce Wang ◽  
Jin Gang He ◽  
Lin Ke ◽  
Zheng Li Jiang
Keyword(s):  
Numerical Simulation ◽  
Velocity Distribution ◽  
Two Phase Flow ◽  
Flow Behaviour ◽  
Nozzle Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Cfd Method ◽  
Solid Liquid ◽  
Structure Engineering

We used CFD method to numerical simulation of solid-liquid two-phase flow in nozzle flow inside the nozzle, simplified structure, used the RNGk-ε model for numerical simulation. Through numerical simulation, we get the velocity distribution and the erosion distribution, provide guidance for further improvement and application in structure engineering

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