scholarly journals A study on the relationship between upstream and downstream conditions in swirling two-phase flow

2020 ◽  
Vol 74 ◽  
pp. 101767 ◽  
Author(s):  
B. Sahovic ◽  
H. Atmani ◽  
P. Wiedemann ◽  
E. Schleicher ◽  
D. Legendre ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
The Relationship

The Numerical Simulation and Optimal Design of Nozzle Jet for Gas-Fluid Two Phase Flow

2011 ◽  
Vol 291-294 ◽  
pp. 2403-2406
Author(s):  
Yan Min Li ◽  
Fei Ma
Keyword(s):  
Optimal Design ◽  
Two Phase Flow ◽  
Structural Parameters ◽  
Performance Testing ◽  
Fluid Phase ◽  
Phase Flow ◽  
Two Phase ◽  
Pressure Distributions ◽  
And Performance ◽  
The Relationship

Taking a nozzle jet for gas-fluid phase flow as a research object, the influences of the main structural parameters on the vacuum in the internal suction volume are analyzed. Utilizing the software FLUENT to simulate the gas-liquid two-phase flow in nozzle jet with different structural parameters, the pressure distributions are obtained and the relationship between the structural parameters and the vacuum in the suction volume is concerned. The results show that the vacuum in the suction volume of jet reaches the maximum when these structural parameters are some certain values. The research is helpful for the optimal design and performance testing of nozzle jets.

Two-Phase Flow Analysis for the SX Type Static Mixer

2011 ◽  
Vol 422 ◽  
pp. 486-489
Author(s):  
Qing Wu ◽  
Xiao Bei Wang ◽  
Quan Lai Li ◽  
Yan Xiang Yang
Keyword(s):  
Flow Field ◽  
Theoretical Study ◽  
Two Phase Flow ◽  
Flow Analysis ◽  
Phase Flow ◽  
Structure Parameters ◽  
Static Mixer ◽  
Two Phase ◽  
Relationship Of ◽  
The Relationship

The two-phase flow field of SX type static mixer is analyzed in this paper. The comprehensive influencing factors are considered during analyzing the relationship of two-phase flowage parameters in practical device. Then the theoretical study is carried out. The two-phase flow is impinged, separated, flowed around and merged. The mixture effect is strengthened. The analytic calculation is carried out according to the practicable turbulent flow pattern and the results is useful for the structure parameters effectively selection and the characteristic optimization.

Void Fraction Detection in a Gas-Liquid Two-Phase Flow Using a Propagation Attenuation Method

2015 ◽  
Vol 738-739 ◽  
pp. 715-719
Author(s):  
Chong Guang Zheng ◽  
Yong Chen ◽  
Yi Yong Huang
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Signal Amplitude ◽  
Injection System ◽  
Pure Liquid ◽  
Phase Flow ◽  
Two Phase ◽  
Experiment System ◽  
Reference Experiment ◽  
The Relationship

Based on the principle of the attenuation of an acoustic wave propagating in a gas-liquid two-phase flow, an experiment has been designed to measure the void fraction. The experiment system is consisted of three segments which arepressure stabilizing control system, ultrasonic measurement system and bubble injection system. The measurement process is three steps. First, a reference experiment is performed to acquire the received signal amplitude in pure liquid. Then, measurement of the received signal amplitude in different void fraction is accomplished. Last, the relationship between void fraction and signal amplitude attenuation is given on which the void fraction of two-phase flow can be detected. It is confirmed that void fraction detection using the present method achieves successfully.

scholarly journals Conditions of gas–solid two-phase flow formed in a vertical screw conveyor

2018 ◽  
Vol 10 (9) ◽  
pp. 168781401879776
Author(s):  
Sun Xiaoxia ◽  
Meng Wenjun ◽  
Yuan Yuan
Keyword(s):  
Gas Flow ◽  
Two Phase Flow ◽  
Screw Conveyor ◽  
Particle State ◽  
Phase Flow ◽  
Two Phase ◽  
Pressure Distributions ◽  
Fluent Simulation ◽  
Screw Diameter ◽  
The Relationship

This study investigates the velocity and pressure distributions of gas flow field in a vertical screw conveyor through EDEM simulation. Results show that the vertical velocity of gas is the highest and that the minimum pressure is negative, which is at the exit, thereby aiding in the upward transportation of particles. The particle state in the vertical screw conveyor is obtained without considering gas (EDEM simulation) and by considering gas (EDEM + FLUENT simulation), respectively. Investigation of the relationship among the screw critical speed, screw diameter, and particle size shows that the conditions of gas–solid two-phase flow form in the vertical screw conveyor. A test is designed to verify the correctness of the conclusions. The results of this study lay a foundation for the development of design methods based on gas–solid two-phase flow in a vertical screw conveyor.

scholarly journals Experimental study in reduction of two phase flow induced vibration

2018 ◽  
Vol 211 ◽  
pp. 16001 ◽  
Author(s):  
Ismail Hossain ◽  
Vladimir I. Velkin ◽  
Sergei E. Shcheklein
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Pressure Pulsations ◽  
Flow Induced Vibration ◽  
Two Phase ◽  
Experimental Stand ◽  
Mechanical Devices ◽  
Relationship Of ◽  
Passive Action ◽  
The Relationship

Vibration in mechanical devices is one of the major problems in engineering field including power generated industry. In this study we focused on the method and possible equipment design availability in reduction of vibration level. A brief overview of the outcomings of pipeline vibrations is presented, the sources of vibrations are listed and possible solutions for eliminating vibrations are described. Devices for passive quenching of pressure pulsations in pipelines with a two-phase flow are considered. We presented the description of the experimental stand on the investigation of the influence of a two-phase flow on the vibration of sections of a pipeline under different flow patterns of a coolant, as well as the procedure for conducting an experiment to study the properties of developed and manufactured swirl models. An animated model was developed that reflects the relationship of swirl geometry with the reduction of the vibro-displacement of the pipeline as a result of passive action on a two-phase flow.

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