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Title: Flow Regimes of Air-Water Counterflow Through Cross Corrugated Parallel Plates

Abstract

Heretofore unknown flow regimes of air-water counterflow through a pair of transparent vertical parallel cross corrugated plates were observed via high-speed video. Air flows upward driven by pressure gradient and water, downward driven by gravity. The crimp geometry of the corrugations was drawn from typical corrugated sheets used as filling material in modern structured packed towers. Four regimes were featured, namely, rivulet, bicontinuous, flooding fronts, and flooding waves. It is conceivable that the regimes observed might constitute the basis for understanding how gas and liquid phases contend for available space in the interstices of structured packings in packed towers. Flow regime transitions were expressed in terms of liquid load (liquid superficial velocity) and gas flow factor parameters commonly used in pressure drop and capacity curves. We have carefully examined the range of parameters equivalent to the ill-understood high-liquid-flow operation in packed towers. More importantly, our findings should prove valuable in validating improved first-principles modeling of gas-liquid flows in these industrially important devices.

Authors:
Publication Date:
Research Org.:
ORNL Oak Ridge National Laboratory (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
815779
Report Number(s):
ORNL/TM-2000/101
TRN: US200319%%528
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 7 Jun 2000
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; AIR FLOW; CAPACITY; GAS FLOW; GEOMETRY; PRESSURE DROP; PRESSURE GRADIENTS; SIMULATION; VELOCITY; WATER

Citation Formats

de Almeida, V.F. Flow Regimes of Air-Water Counterflow Through Cross Corrugated Parallel Plates. United States: N. p., 2000. Web. doi:10.2172/815779.
de Almeida, V.F. Flow Regimes of Air-Water Counterflow Through Cross Corrugated Parallel Plates. United States. doi:10.2172/815779.
de Almeida, V.F. Wed . "Flow Regimes of Air-Water Counterflow Through Cross Corrugated Parallel Plates". United States. doi:10.2172/815779. https://www.osti.gov/servlets/purl/815779.
@article{osti_815779,
title = {Flow Regimes of Air-Water Counterflow Through Cross Corrugated Parallel Plates},
author = {de Almeida, V.F.},
abstractNote = {Heretofore unknown flow regimes of air-water counterflow through a pair of transparent vertical parallel cross corrugated plates were observed via high-speed video. Air flows upward driven by pressure gradient and water, downward driven by gravity. The crimp geometry of the corrugations was drawn from typical corrugated sheets used as filling material in modern structured packed towers. Four regimes were featured, namely, rivulet, bicontinuous, flooding fronts, and flooding waves. It is conceivable that the regimes observed might constitute the basis for understanding how gas and liquid phases contend for available space in the interstices of structured packings in packed towers. Flow regime transitions were expressed in terms of liquid load (liquid superficial velocity) and gas flow factor parameters commonly used in pressure drop and capacity curves. We have carefully examined the range of parameters equivalent to the ill-understood high-liquid-flow operation in packed towers. More importantly, our findings should prove valuable in validating improved first-principles modeling of gas-liquid flows in these industrially important devices.},
doi = {10.2172/815779},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {6}
}

Technical Report:

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