Dynamic Simulation and Analysis of Different Phase Synchronous Rotor Mixing Process

2013 ◽  
Vol 561 ◽  
pp. 279-284
Author(s):  
Xue Jie Mu ◽  
Xing Wei Li ◽  
Na Duan
Keyword(s):  
Dynamic Simulation ◽  
Phase Angle ◽  
Mixing Process ◽  
Two Phase ◽  
Mixing Effect ◽  
Phase Angles ◽  
Better Than

Contrast and analysis of the influence that synchronous rotor mixer’s two phase angles 90° and 180° to the mixing effect using special visco-elasticity fluid software--Polyflow. The results show that 90° phase angle rotor could promote compound mixing, and improve mixing rubber’s uniformity, and its mixing effect is better than synchronous rotor with 180° phase angle.

Numerical Simulation of Two-Phase Liquid–liquid Flow in a New Static Mixer Structure

2011 ◽  
Vol 368-373 ◽  
pp. 1604-1607
Author(s):  
Hong Yan Zhang ◽  
Hai Hong Dong
Keyword(s):  
Numerical Simulation ◽  
Liquid Flow ◽  
Transport Model ◽  
Simulation Method ◽  
Static Mixer ◽  
Mixing Process ◽  
Two Phase ◽  
Species Transport ◽  
Mixing Effect ◽  
Phase Liquid

In this article, Spiral belt static mixer with changing diameter was taken as the object. The numerical simulation method was used to investigate the mixing process of two-phase liquid–liquid flow in water treatment by a commercial CFD code,namely Fluent.The k-ε model and species transport model were established to research this project. Then the mixing effect was compared with that of HEV static mixer. The result showed that spiral belt static mixer with changing diameter promote the mixing effect greatly. The mixing effect relative to that of HEV static mixer increased 10 times and the the pressure loss only increased 3 times.

Dynamic Simulation of 3D Fluid Field for Four-Wing Synchronous Mixer Rotor and Four-Wing Asynchronous Mixer Rotor

2012 ◽  
Vol 501 ◽  
pp. 76-81
Author(s):  
Chun Ping Chen ◽  
Chuan Sheng Wang ◽  
Meng Zhang
Keyword(s):  
Dynamic Simulation ◽  
Pressure Field ◽  
Concentration Field ◽  
Finite Element Models ◽  
Mixing Process ◽  
Fluid Field ◽  
Field Dynamic ◽  
Internal Mixer ◽  
Mixed Exponential Distribution ◽  
Better Than

The physical, mathematical and finite element models for the four-wing synchronous rotors and four-wing asynchronous rotors in internal mixer were established in this paper. By comparative analysis of the two types of processes involved in mixing process the pressure field, the velocity field and the concentration field, the viscosity field and the mixed exponential distribution on its 3D fluid field dynamic simulation were computed by the polyflow software. The results showed that the four-wing synchronous rotors were better than the four-wing asynchronous rotors in a number of performance parameters.

Evaluation Analysis of Prediction Methods for Two-Phase Flow Pressure Drop in Mini-Channels

2008 ◽  
Author(s):  
Licheng Sun ◽  
Kaichiro Mishima
Keyword(s):  
Pressure Drop ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Turbulent Region ◽  
Frictional Pressure Drop ◽  
New Correlation ◽  
Mini Channels ◽  
Flow Pressure ◽  
Better Than

2092 data of two-phase flow pressure drop were collected from 18 published papers of which the working fluids include R123, R134a, R22, R236ea, R245fa, R404a, R407C, R410a, R507, CO2, water and air. The hydraulic diameter ranges from 0.506 to 12mm; Relo from 10 to 37000, and Rego from 3 to 4×105. 11 correlations and models for calculating the two-phase frictional pressure drop were evaluated based upon these data. The results show that the accuracy of the Lockhart-Martinelli method, Mishima and Hibiki correlation, Zhang and Mishima correlation and Lee and Mudawar correalion in the laminar region is very close to each other, while the Muller-Steinhagen and Heck correlation is the best among the evaluated correlations in the turbulent region. A modified Chisholm correlation was proposed, which is better than all of the evaluated correlations in the turbulent region and its mean relative error is about 29%. For refrigerants only, the new correlation and Muller-Steinhagen and Heck correlation are very close to each other and give better agreement than the other evaluated correlations.

scholarly journals An Ultra Small Angle Scattering Study of Hydrogen in Metals

1982 ◽  
Vol 37 (5) ◽  
pp. 512-516 ◽  
Author(s):  
D. Bader ◽  
H. Rauch ◽  
A. Zeilinger
Keyword(s):  
Lattice Gas ◽  
Angular Position ◽  
Phase Region ◽  
Two Phase ◽  
Interstitial Solution ◽  
Α Phase ◽  
Angle Scattering ◽  
Scattering Study ◽  
Adjustment System ◽  
Better Than

A diffractometer using perfect crystals in symmetric Bragg arrangement, hence being useful for both neutron and X-ray radiation, has been built. The angular resolution of that instrument is better than 1 microradian, which corresponds to a scattering vector resolution of about 10-6 Å-1. This spectrometer was equipped with a laser light adjustment system which is sensitive to the relative angular position of the two perfect crystals. The spectrometer was used for the mea­surement of neutron scattering at very low angles of hydrated niobium and vanadium samples. The experimental results show an anomalously low attenuation of the neutrons when the metal-H sample is within the solubility a region. This property is explained by a lattice gas model of atomic H in the α-phase of the system. In the two phase region (α - β) a stronger attenuation of the neutron beam occurs due to the sample now being in an ordered interstitial solution phase.

New Relationship Between Resistivity Index and Relative Permeability

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Dong Ma ◽  
Changwei Liu ◽  
Changhui Cheng
Keyword(s):  
Capillary Pressure ◽  
Relative Permeability ◽  
Pressure Data ◽  
Two Phase ◽  
Resistivity Index ◽  
Proposed Model ◽  
Petrophysical Parameter ◽  
Oil Water ◽  
Better Than ◽  
Good Agreement

Relative permeability as an important petrophysical parameter is often measured directly in the laboratory or obtained indirectly from the capillary pressure data. However, the literature on relationship between relative permeability and resistivity is lacking. To this end, a new model of inferring two-phase relative permeability from resistivity index data was derived on the basis of Poiseuille's law and Darcy's law. The wetting phase tortuosity ratio was included in the proposed model. The relative permeabilities computed from the capillary pressure data, as well as the experimental data measured in gas–water and oil–water flow condition, were compared with the proposed model. Both results demonstrated that the two-phase permeability obtained by proposed model were generally in good agreement with the data computed from capillary pressure and measured in the laboratory. The comparison also showed that our model was much better than Li model at matching the relative permeability data.

scholarly journals A Numerical simulation of mixing process of Two-phase Flow by MPS Method

2001 ◽  
Vol 4 ◽  
pp. 103-111
Author(s):  
Kensaku MATSUMOTO ◽  
Shigeki KOBATAKE ◽  
Yoshihiko SHIMIZU ◽  
Masahiro SUGIYAMA ◽  
Ioakim IOAKIM
Keyword(s):  
Numerical Simulation ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Mixing Process ◽  
Two Phase ◽  
Mps Method

Phase Averaging Analysis of the Unsteady Velocity Profiles in a Separated Flow

2003 ◽  
Author(s):  
Masaki Yamagishi ◽  
Tomoko Togano ◽  
Shinichi Tashiro
Keyword(s):  
Phase Angle ◽  
Wavelet Transformation ◽  
Separated Flow ◽  
Time Dependent ◽  
Frequency Data ◽  
Two Phase ◽  
Averaging Technique ◽  
Phase Averaging ◽  
Dependent Signal ◽  
Averaging Techniques

By using phase averaging technique, turbulent structure in a flow was studied. For the phase angle of the time dependent signal modulated in frequency, data acquisition is difficult. This study proposed a new method of phase averaging by wavelet transformation. The purpose of the present study is to compare the results of the phase averaging by wavelet transformation with those by the traditional phase averaging technique. These two phase averaging techniques were applied to the experimental data of the velocities in a separated flow with periodical fluctuation. Between the results by these techniques, noticeable differences were shown. If the velocity signals include the frequency modulation, the profiles of phase-averaged velocity by the traditional technique will have nearly the same shapes and be similar to those of time-averaged velocity. On the other hand, the profiles by wavelet transformation showed the clear differences at each phase angle even for the velocity signals with modulated frequencies.

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