Stability of stratified flow and slu

Stability of stratified flow and slugging in horizontal gas-liquid flow

A transient one-dimensional two-fluid model is proposed to investigate numerically the interfacial instability and the onset of slugging for liquid-gas flow in a horizontal duct. In the present model, the effects of surface tension and transverse variations in dynamic pressure are taken into account. The evolution of interfacial disturbances is displayed and compared with the linear viscous KelvinHelmholtz stability analyses. It shows that interfacial wave is more instable due to the non-linear effect. The model predicts well the stability limit of stratified flow in comparison with the experimental data, and also automatically tracks the onset of slugging. The results show that the initiation of hydrodynamic slugging is related to local interfacial instability. Based on the cycle of slugging, a model for slug frequency is presented, which predicts the trends of slug frequencies with gas/liquid flow rate well in comparison with the available data. The effects of physical properties on slugging have been examined. It is found that with the increase in the gas viscosity and liquid density the slugging would be inhibited, whereas, with the increase in liquid viscosity and gas density, the slugging can be promoted.

作 者： GU Hanyang GUO Liejin   作者单位： State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China  刊 名： 自然科学进展（英文版）  SCI 英文刊名： PROGRESS IN NATURAL SCIENCE  年，卷(期)： 2005 15(11)  分类号： P3  关键词： two-fluid model   Kelvin-Helmholtz stability   interfacial instability   onset of slugging   gas-liquid stratified flow  

【Stability of stratified flow and slu】相关文章：

A NOTE ON THE MEAN CURVATURE FLOW IN RIEMANNIAN MANIFOLDS04-26

Environmental Effects on Microstructural Stability of SiC/SiC Composites04-26

Performance of a subsurface-flow constructed wetland in Southern China04-26

客流高峰怎么说？passenger flow peak05-04

Numerical model of flow and pollutant transportation in non-orthogonal curvilinear coordinates04-26

Coupled Numerical Analysis of the Stability Behaviour of Unsaturated Soil Slopes Under Rainfall Conditions04-27

Recent Results on Fast Flow Gas-Phase Partial Oxidation of Lower Alkanes04-26

Recent Results on Fast Flow Gas-Phase Partial Oxidation of Lower Alkanes04-26

Influence of the Haizhou Open Pit Coal Mine on the atmospheric flow over Fuxin,China04-25

英语四级作文：电流和水流-The Flow of Electricity and Water08-09