Research Papers

Report on Microgravity Experiments of Marangoni Convection Aboard International Space Station

[+] Author and Article Information
Hiroshi Kawamura

 Tokyo University of Science, Suwa, Chino 391-8502, Nagano, Japan

Koichi Nishino

 Yokohama National University, Yokohama 240-8501, Kanagawa, Japannish@ynu.ac.jp

Satoshi Matsumoto

Japan Aerospace Exploration Agency, Tsukuba 305-8505, Ibaraki, Japan

Ichiro Ueno

 Tokyo University of Science, Noda 278-8510, Chiba, Japan

J. Heat Transfer 134(3), 031005 (Jan 11, 2012) (13 pages) doi:10.1115/1.4005145 History: Received July 25, 2010; Accepted September 08, 2011; Revised September 08, 2011; Published January 11, 2012; Online January 11, 2012

This paper reports some important results obtained from a series of microgravity experiments on the Marangoni convection that takes place in liquid bridges. This project, called Marangoni Experiment in Space (MEIS), started from August 22, 2008 as the first science experiment on the Japanese Experimental Module “KIBO” at the ISS. Two series of experiments, MEIS-1 and 2, were conducted in 2008 and 2009, respectively. The experimental methods used are explained in some detail. The maximum size of the liquid bridge that could be realized during these experiments was 30 mm in diameter and 60 mm in length, giving an aspect ratio of 2.0. The results are obtained for a wide range of aspect ratios of the liquid bridges, including the values that cannot be reached in 1 g experiments, and therefore, they provide indispensable amount of data for the study of instability mechanisms of the Marangoni convection.

Copyright © 2012 by American Society of Mechanical Engineers
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Figure 1

Illustration of the Marangoni convection due to temperature gradient

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Figure 3

Full zone model and the derivative half zone model for the study of FZ method in laboratories

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Figure 4

The history of the previous microgravity experiments conducted either in sounding rocket missions or in the Space Shuttle missions

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Figure 5

Schematic diagram of the measurement apparatuses installed in FPEF

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Figure 6

A close-up view of the three B/W CCD cameras for 3D flow measurement

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Figure 7

The core part (left) and the mission part (right) of FPEF

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Figure 8

Typical procedures for experimental run: (a) overall procedures, (b) procedures for onset of oscillation

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Figure 9

End-view pictures of the liquid bridge (a) in the presence of many bubbles and (b) after bubble removal

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Figure 10

1/3 octave band level of g-jitter measured on KIBO

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Figure 11

Time traces of g-jitter signals measured on KIBO

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Figure 12

Plot for ΔTc as a function of Ar

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Figure 13

Plot of Mac as a function of Ar

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Figure 14

Plot for F as a function of Ar

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Figure 15

Comparison of Mac with previous studies

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Figure 16

Visualization of azimuthal mode number in oscillatory Marangoni convection

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Figure 17

The relation between m and Ar

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Figure 18

Particle traces measured with 3D PTV for Ar = 0.75 and ΔT = 7.9 °C

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Figure 19

Particle traces for Ar = 1.5 and ΔT = 3.1 °C

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Figure 20

Particle traces for Ar = 1.5 and ΔT = 11.2 °C

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Figure 21

Propagation of surface temperature fluctuation for Ar = 2.0 and ΔT = 19.2 °C

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Figure 22

Visualization of surface velocity by means of the photochromic dye activation method

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Figure 23

Dimensionless surface velocity as a function of axial position




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