Activities in preparation of the sounding rocket experiment on oscillatory Marangoni flow

R. Monti, R. Savino, M. Lappa, R. Fortezza

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The experiment "Pulsating and Rotating instabilities (PULSAR)", to be performed on board the Maxus 3 sounding rocket in spring 1998, is aimed at identifying the features of the oscillatory flow regime that is established in a cylindrical liquid bridge when a sufficiently large temperature difference is imposed between the supporting disks. The investigators intend to confirm previous numerical results that predict for a large Prandtl number liquid a first transition from the axi-symmetric steady to a three-dimensional oscillatory flow, characterized by temperature spots pulsating at fixed positions in the liquid column and then a second transition from the pulsating regime to another model, with temperature spots rotating in the azimuthal direction.
This paper reports on the activity in preparation of the experiment, consisting in extensive numerical simulations, complemented by laboratory experiments performed with a microscale apparatus. The results of the computations and of the microscale experiments define an experimental procedure that makes optimum use of the microgravity time available during the sounding rocket experiment.
LanguageEnglish
Title of host publication48th Congress of the International Astronautical Federation, Turin, Italy, 6-10 October 1997
Number of pages17
Publication statusPublished - 1997
Event48th International Astronautical Congress - Turin, Italy
Duration: 6 Oct 199710 Oct 1997

Conference

Conference48th International Astronautical Congress
CountryItaly
CityTurin
Period6/10/9710/10/97

Fingerprint

Sounding rockets
Experiments
Liquids
Microgravity
Prandtl number
Temperature
Computer simulation

Keywords

  • sounding rocket experiment
  • Marangoni flow

Cite this

Monti, R., Savino, R., Lappa, M., & Fortezza, R. (1997). Activities in preparation of the sounding rocket experiment on oscillatory Marangoni flow. In 48th Congress of the International Astronautical Federation, Turin, Italy, 6-10 October 1997 [IAF-97-J.4.01 ]
Monti, R. ; Savino, R. ; Lappa, M. ; Fortezza, R. / Activities in preparation of the sounding rocket experiment on oscillatory Marangoni flow. 48th Congress of the International Astronautical Federation, Turin, Italy, 6-10 October 1997. 1997.
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Monti, R, Savino, R, Lappa, M & Fortezza, R 1997, Activities in preparation of the sounding rocket experiment on oscillatory Marangoni flow. in 48th Congress of the International Astronautical Federation, Turin, Italy, 6-10 October 1997., IAF-97-J.4.01 , 48th International Astronautical Congress, Turin, Italy, 6/10/97.

Activities in preparation of the sounding rocket experiment on oscillatory Marangoni flow. / Monti, R.; Savino, R.; Lappa, M.; Fortezza, R.

48th Congress of the International Astronautical Federation, Turin, Italy, 6-10 October 1997. 1997. IAF-97-J.4.01 .

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Activities in preparation of the sounding rocket experiment on oscillatory Marangoni flow

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AU - Fortezza, R.

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AB - The experiment "Pulsating and Rotating instabilities (PULSAR)", to be performed on board the Maxus 3 sounding rocket in spring 1998, is aimed at identifying the features of the oscillatory flow regime that is established in a cylindrical liquid bridge when a sufficiently large temperature difference is imposed between the supporting disks. The investigators intend to confirm previous numerical results that predict for a large Prandtl number liquid a first transition from the axi-symmetric steady to a three-dimensional oscillatory flow, characterized by temperature spots pulsating at fixed positions in the liquid column and then a second transition from the pulsating regime to another model, with temperature spots rotating in the azimuthal direction.This paper reports on the activity in preparation of the experiment, consisting in extensive numerical simulations, complemented by laboratory experiments performed with a microscale apparatus. The results of the computations and of the microscale experiments define an experimental procedure that makes optimum use of the microgravity time available during the sounding rocket experiment.

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KW - Marangoni flow

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BT - 48th Congress of the International Astronautical Federation, Turin, Italy, 6-10 October 1997

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Monti R, Savino R, Lappa M, Fortezza R. Activities in preparation of the sounding rocket experiment on oscillatory Marangoni flow. In 48th Congress of the International Astronautical Federation, Turin, Italy, 6-10 October 1997. 1997. IAF-97-J.4.01