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Dynamics of a liquid film produced by spray impact onto a heated target

Kyriopoulos, O. and Roisman, Ilia V. and Gambaryan-Roisman, Tatiana and Stephan, Peter and Tropea, Cameron (2008):
Dynamics of a liquid film produced by spray impact onto a heated target.
In: Proceedings 22th Int. Conf. on Liquid Atomization and Spray System, [Conference or Workshop Item]

Abstract

The hydrodynamics and heat transfer associated with spray impact onto a heated target is investigated. The wall film flow generated by spray impact, and the spray cooling efficiency are studied under terrestrial, microgravity and hypergravity conditions. The microgravity experiments are performed during several Parabolic Flight campaigns and on board of a TEXUS sounding rocket. The spray cooling efficiency has been determined at various spray parameters and at different gravity levels. The longer duration of microgravity conditions obtained on TEXUS allows a better quantification of the gravity level effect on spray cooling. A robust method of liquid film characterization has been proposed. The average film thickness increases and the spray cooling efficiency decreases as gravity is reduced.

Item Type: Conference or Workshop Item
Erschienen: 2008
Creators: Kyriopoulos, O. and Roisman, Ilia V. and Gambaryan-Roisman, Tatiana and Stephan, Peter and Tropea, Cameron
Title: Dynamics of a liquid film produced by spray impact onto a heated target
Language: English
Abstract:

The hydrodynamics and heat transfer associated with spray impact onto a heated target is investigated. The wall film flow generated by spray impact, and the spray cooling efficiency are studied under terrestrial, microgravity and hypergravity conditions. The microgravity experiments are performed during several Parabolic Flight campaigns and on board of a TEXUS sounding rocket. The spray cooling efficiency has been determined at various spray parameters and at different gravity levels. The longer duration of microgravity conditions obtained on TEXUS allows a better quantification of the gravity level effect on spray cooling. A robust method of liquid film characterization has been proposed. The average film thickness increases and the spray cooling efficiency decreases as gravity is reduced.

Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD)
Exzellenzinitiative
Exzellenzinitiative > Clusters of Excellence
Zentrale Einrichtungen
Exzellenzinitiative > Clusters of Excellence > Center of Smart Interfaces (CSI)
Event Title: Proceedings 22th Int. Conf. on Liquid Atomization and Spray System
Date Deposited: 17 Mar 2015 15:07
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