@inproceedings{Zadrazil:2012:10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.820,
author = {Zadrazil, I and Markides, CN and Matar, OK and Naraigh, LO and Hewitt, GF},
doi = {10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.820},
publisher = {Begell House},
title = {Characterisation of Downwards Co-Current Gas-Liquid Annular Flows},
url = {http://dx.doi.org/10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.820},
year = {2012}
}

Download

TY  - CPAPER
AB  - The hydrodynamic characteristics of downwards co-current two-phase (gas-liquid) flows inside avertical tube (ID = 32 mm) have been investigated experimentally. Advanced optical techniques, namely LaserInduced Fluorescence and Particle Tracking Velocimetry, were utilised for the characterisation of these flowsover a wide range of gas and liquid superficial velocities (U_G = 0 – 34 m/s and U_L = 0.034 – 0.182 m/s),corresponding to Reynolds numbers Re_G = 0 – 84,600 and Re_L = 1,230 – 6,130. A flow regime map, whichcontains a previously unreported flow regime, is constructed based on the flow observations. The quantitativeanalysis of the liquid films allows the generation of film thickness, wave frequency, bubble size, bubblefrequency and velocity profile data. It was found that the different observed flow regimes posses a characteristiccombination of the investigated quantitative parameters. A model, based on modified mixing-length theory, wasused to predict the liquid film velocity profiles and good agreement was found with the experimental results.
AU  - Zadrazil,I
AU  - Markides,CN
AU  - Matar,OK
AU  - Naraigh,LO
AU  - Hewitt,GF
DO  - 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.820
PB  - Begell House
PY  - 2012///
TI  - Characterisation of Downwards Co-Current Gas-Liquid Annular Flows
UR  - http://dx.doi.org/10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.820
UR  - http://hdl.handle.net/10044/1/78249
ER  - 

Download