Effect of G-jitter on the thermocapillary convection experiment in ISS

被引：0
|
作者：
Yuta Kanashima
Koichi Nishino
Shin-ichi Yoda
机构：
[1] Yokohama National University,
[2] Japan Aerospace Exploration Agency,undefined
来源：
Microgravity - Science and Technology | 2005年 / 16卷
关键词：
Amplitude Spectrum; Piezoelectric Actuator; Liquid Bridge; Oscillatory State; Marangoni Number;
D O I：
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中图分类号：
学科分类号：
摘要：
Effects of g-jitter on the measurement of dynamic surface deformations (DSD) caused by the oscillatory thermocapillary convection in a liquid bridge have been studied experimentally. A vibration table driven by a piezoelectric actuator is constructed to generate g-jitters of realistic amplitude and frequency spectra. A microimaging displacement meter is used to measure DSD in the presence of g-jitter. It is shown that the natural DSD in the oscillatory state of thermocapillary convection is well separated in the frequency domain from that caused by harmonic and non-harmonic g-jitters. It is concluded that the DSD measurement in the future ISS experiment is feasible even in the presence of g-jitter there.
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页码：285 / 289
页数：4
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