The effect of drop concentration on deposition in vertical annular two-phase flow

Deposition in annular two phase flow has been found to deviate from a linear rate law. At high liquid flows the rate constant is found to vary inversely with drop concentration (i.e. the rate of deposition is independent of concentration). This deviation causes concern when predicting dryout in two phase applications. To better understand this process, information on its drop size and on the behavior of drops in the turbulent gas flow are needed. Experiments were conducted in a 4.2 cm vertical pipe at an upward superficial gas velocity of 36 m/s and at liquid mass flow rates from 30 to 170 g/s. Photographic drop size measurements were obtained. Measurements of entrainment, gas velocity, slip ratio, and drop concentration were also obtained. An increase in mean drop diameters with increasing drop concentration was found.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Hay, Kent James

Contributors dc:contributor

• Hanratty, Thomas J.

• Engineering, Chemical

Statement dc:rights

• Copyright 1994 Hay, Kent James

Language dc:language

eng

Identifier

AAI9512390
(UMI)AAI9512390

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20554