Guoqing Chen, Ge Yin, Yanni Jiang, Xiaoming Zhou, Yuequn Tao
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Numerical Investigation of the Influence of Nanoparticle Shape on Nanofluids Thermocapillary Convection Instability
For disclose the effect of nanoparticle shape on flow regime and critical condition of thermocapillary convection, the nanofluid thermocapillary convection with different shaped nanoparticles are investigated in this paper, and the oscillation characteristics of thermocapillary flow are analyzed. The results indicate that, the nanoparticles can significantly alter the oscillatory characteristics of thermocapillary convection instability, and the influence of platelet shaped nanoparticle is the strongest and followed by cylinder, blade, brick, and sphere nanoparticles. The main frequency of oscillatory thermocapillary convection decreases with the increase of sphericity, and the size of hydrothermal wave propagation angle at free surface is as follows: sphere > brick > cylinder > blade > platelet.
期刊介绍：
Microgravity Science and Technology – An International Journal for Microgravity and Space Exploration Related Research is a is a peer-reviewed scientific journal concerned with all topics, experimental as well as theoretical, related to research carried out under conditions of altered gravity.
Microgravity Science and Technology publishes papers dealing with studies performed on and prepared for platforms that provide real microgravity conditions (such as drop towers, parabolic flights, sounding rockets, reentry capsules and orbiting platforms), and on ground-based facilities aiming to simulate microgravity conditions on earth (such as levitrons, clinostats, random positioning machines, bed rest facilities, and micro-scale or neutral buoyancy facilities) or providing artificial gravity conditions (such as centrifuges).
Data from preparatory tests, hardware and instrumentation developments, lessons learnt as well as theoretical gravity-related considerations are welcome. Included science disciplines with gravity-related topics are:
− materials science
− fluid mechanics
− process engineering
− physics
− chemistry
− heat and mass transfer
− gravitational biology
− radiation biology
− exobiology and astrobiology
− human physiology
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