scholarly journals STUDY OF THE INFLUENCE OF CONSTRUCTION AND MODE PARAMETERS ON THE HYDRODYNAMICS OF A HOLLOW VORTEX APPARATUS

2021 ◽  
pp. 47-50
Keyword(s):  
Pressure Drop ◽  
Hydraulic Resistance ◽  
Liquid Flow ◽  
Gas Flow ◽  
Efficient Design ◽  
Contact Heat ◽  
Dust Collection ◽  
Hollow Vortex ◽  
Gas Liquid Flow ◽  
Vortex Apparatus

The research was to determine the more efficient design of the swirler from the point of view of hydrodynamics and heat and its optimal parameters. Various swirl designs were manufactured and tested. After preliminary studies conducted on a laboratory installation with a glass working apparatus, several swirlers were selected taking into account their hydraulic resistance, the structure of the swirling gas-liquid flow, and the amount of liquid entrainment by gas. The results of an experimental study of the hydrodynamics of a hollow vortex apparatus with one and two tangential and axial swirlers. Hydraulic losses in the channel and in the swirls during the direct downward movement of gas and gas-liquid flow are determined. In addition, studies of the hydraulic resistance of a vortex-type device allow us to determine the energy consumption of this device for conducting complex processes of dust collection and absorption or contact heat exchange. The hydraulic resistance in the presence of a liquid film is higher than in the case of a single-phase gas flow. The pressure drop in the studied vortex apparatus does not exceed the resistance of high-performance cyclones and vortex-type devices of other designs. The effect of the twist coefficient of gas swirlers, gas velocity, and liquid flow on the pressure drop in the vortex apparatus is established

Effect of SDBS surfactant on gas–liquid flow pattern and pressure drop in upward-inclined pipelines

2021 ◽  
pp. 110507
Author(s):  
Pengbo Yin ◽  
Pan Zhang ◽  
Xuewen Cao ◽  
Xiang Li ◽  
Yuhao Li ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Flow Pattern ◽  
Liquid Flow ◽  
Gas Liquid Flow

Pressure drop model of gas-liquid flow with mass transfer in tree-typed microchannels

2020 ◽  
Vol 397 ◽  
pp. 125340
Author(s):  
Rongwei Guo ◽  
Taotao Fu ◽  
Chunying Zhu ◽  
Youguang Ma
Keyword(s):  
Mass Transfer ◽  
Pressure Drop ◽  
Liquid Flow ◽  
Gas Liquid Flow

Experimental Study on Flow Patterns and Pressure Drop of Decaying Swirling Gas-Liquid Flow in a Vertical Pipe

2020 ◽  
Author(s):  
Jiarong Zhang ◽  
Li Liu ◽  
Shuai Liu ◽  
Hanyang Gu
Keyword(s):  
Pressure Drop ◽  
Flow Regime ◽  
Liquid Flow ◽  
High Speed ◽  
Phase Distribution ◽  
Swirling Flow ◽  
Tangential Velocity ◽  
High Speed Camera ◽  
Vertical Pipe ◽  
Gas Liquid Flow

Abstract Vertical swirling gas-liquid flow is a kind of complex two-phase flow containing a nonzero tangential velocity component in engineering applications. The accurate flow regime characterization, phase distribution information and pressure drop data about vertical swirling flow are the basis for the optimization of steam generator (SG), which can greatly reduce the cost and improve the safety of nuclear plants. To get these key parameters of swirling vertical flow, we have made a comprehensive visualization experiment in a vertical pipe with 30mm diameter and 5m length by high-speed camera. The experimental pipe is separated into swirling part and non-swirling part. We have set three observation section with different vertical heights in the swirling part. Changing the flow rate of water and gas, different swirling flow pattern photos can be captured by high-speed camera. Based on the photos of different positions and image-processing MATLAB code, we can get three flow regime maps and figure out the decaying law of swirling gas-liquid flow. The pressure drop can be recorded by rotameter at each position. The decaying law of pressrure drop can be concluded from it. These data can be a guide for designing gas-liquid separator in SG to improve the efficiency of nuclear plant.

Sign in / Sign up

Export Citation Format

Share Document