Frequency Analysis of Taylor-Couette Flow with Small Aspect Ratio in Water-Vegetable Oil Emulsion
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- SASAYAMA Daichi
- Muroran Institute of Technology
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- OISHI Yoshihiko
- Muroran Institute of Technology
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- KAWAI Hideki
- Muroran Institute of Technology
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- KIKURA Hiroshige
- Tokyo Institute of Technology
Bibliographic Information
- Other Title
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- 低アスペクト比Taylor-Couette流れ水-植物油エマルジョンの周波数解析
Abstract
<p>The emulsification method is not only one of the potentially effective techniques to reduce fossil fuel consumption but also exhaust emission from diesel engines. Water-in-Oil (W/O) emulsified fuel is reported to reduce the emissions of NOx, SOx, CO and particulate matter (PM) caused by a decrease in combustion temperature and a micro explosion in combustion. However, the emulsified fuel shows non-Newtonian properties called pseudoplastic flow as water content ratio increases. Since a viscosity of pseudoplastic flow decreases with increasing shear rate, the W/O emulsified fuel causes clogging of fuel injector, decrease of combustion efficiency due to deterioration of fuel spray in high water content ratio. It is important to know a flow state of the emulsified fuel in mixing conditions. In this study, we evaluated W/O emulsified fuels using ultrasonic measurement, produced 10 %, 20 %, 30 % water-vegetable oil emulsion at 300-800 rpm with a Taylor-Couette flow reactor. We measured velocity profiles and attenuation of echo at every 100 rpm utilizing the ultrasonic Doppler method and echo intensity measurement. Then, As a result, transitions of the velocity profiles and the echo attenuation were different in each water content ratio.</p>
Journal
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- The Proceedings of the Fluids engineering conference
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The Proceedings of the Fluids engineering conference 2020 (0), OS14-06-, 2020
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390006662428141184
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- NII Article ID
- 130008043537
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- ISSN
- 24242896
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed