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Multi-Phase Flow and Heat Transfer of a Micro-Pump Thermally Driven by a Multi-Output Pulse Laser |
| HUAI Xiu-Lan1;TANG Zhi-Wei2;WANG Guo-Xiang3;WANG Wei-Wei1 |
| 1Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080
2College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022
3Department of Mechanical Engineering, The University of Akron, Akron, Ohio 44325-3903, USA |
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| Cite this article: |
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HUAI Xiu-Lan, TANG Zhi-Wei, WANG Guo-Xiang et al 2005 Chin. Phys. Lett. 22 398-401 |
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Abstract We present an experimental study of multi-phase flow and heat transfer in a micro-tube induced by a multi-output pulse laser. Extensive flow and heat transfer measurements and visualization experiments have been carried out to characterize the micro-pump behaviour under various conditions. The experiments reveal extremely unsteady and complex flow patterns in the micro tube with the flow closely related with generation and collapse of bubbles. It is found that the flow rates are controlled by the heating and condensation conditions within the tube. The laser pulse duration, pulse interval and output-power as well as the tube diameter all show a strong influence on the flow rate of the micro-pump. This study provides a basis for the design of thermally-driven micro-pump induced by a pulsed laser beam.
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| Keywords:
44.35.+c
44.15.+a
44.90.+c
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Published: 01 February 2005
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| PACS: |
44.35.+c
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(Heat flow in multiphase systems)
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44.15.+a
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(Channel and internal heat flow)
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44.90.+c
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(Other topics in heat transfer)
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