Cecere, Anselmo (2009) A study on self-rewetting fluids for heat transfer in microgravity. [Tesi di dottorato] (Unpublished)


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Item Type: Tesi di dottorato
Resource language: English
Title: A study on self-rewetting fluids for heat transfer in microgravity
Cecere, Anselmoanselmocecere@hotmail.com
Date: 30 November 2009
Number of Pages: 120
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria aerospaziale
Scuola di dottorato: Ingegneria industriale
Dottorato: Ingegneria aerospaziale, navale e della qualità
Ciclo di dottorato: 22
Coordinatore del Corso di dottorato:
Moccia, Antonioantonio.moccia@unina.it
Savino, Raffaelerasavino@unina.it
Date: 30 November 2009
Number of Pages: 120
Keywords: Heat Pipe, Marangoni Effect, Self-rewetting fluid, Microgravity Experiment, Interferometry
Settori scientifico-disciplinari del MIUR: Area 09 - Ingegneria industriale e dell'informazione > ING-IND/06 - Fluidodinamica
Date Deposited: 20 May 2010 07:56
Last Modified: 30 Apr 2014 19:38
URI: http://www.fedoa.unina.it/id/eprint/3829
DOI: 10.6092/UNINA/FEDOA/3829

Collection description

In a number of water alcohols solutions the surface tension is an increasing function of temperature. Such mixtures are generally referred as self-rewetting fluids because convection driven by a reverse Marangoni effect is direct from cold to hot region along liquid-vapour interface. Within two phase heat transfer device, like heat pipes, liquid condensed is spontaneously driven to the hot evaporator improving the thermal performances and increasing the maximum heat flux. The research activities focused on numerical simulation and experimental laboratory for thermal characterization of heat pipe filled with self-rewetting fluids. Measurements of thermo-physical properties, in particular surface tension, have been carried out for several binary and ternary mixtures. A comparison between heat pipe filled ordinary and self-rewetting fluids has been carried out. Flow visualization of self-rewetting fluids has been obtained using optical diagnostic systems.


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