Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids
Quenching of small stainless steel rods in pure water and nanofluids with alumina and diamond nanoparticles at low concentrations (0.1 vol%) was investigated experimentally. The rods were heated to an initial temperature of ~1000 °C and then plunged into the test fluid. The results show that the...
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| Format: | Article |
| Language: | en_US |
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American Society of Mechanical Engineers
2011
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| Online Access: | http://hdl.handle.net/1721.1/60933 |
| _version_ | 1826215094008152064 |
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| author | Buongiorno, Jacopo McKrell, Thomas J. Hu, Lin-Wen Kim, Hyungdae |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Buongiorno, Jacopo McKrell, Thomas J. Hu, Lin-Wen Kim, Hyungdae |
| author_sort | Buongiorno, Jacopo |
| collection | MIT |
| description | Quenching of small stainless steel rods in pure water and
nanofluids with alumina and diamond nanoparticles at low
concentrations (0.1 vol%) was investigated experimentally.
The rods were heated to an initial temperature of ~1000 °C and
then plunged into the test fluid. The results show that the
quenching behavior of the nanofluids is nearly identical to that
of pure water. However, due to nanofluids boiling during the
quenching process, some nanoparticles deposit on the surface
of the rod, which results in much higher quenching rate in
subsequent tests with the same rod. It is likely that particle
deposition destabilizes the film-boiling vapor film at high
temperature, thus causing the quenching process to accelerate,
as evident from the values of the quench front speed measured
by means of a high-speed camera. The acceleration strongly
depends on the nanoparticle material used, i.e., the alumina
nanoparticles on the surface significantly improve the
quenching, while the diamond nanoparticles do not. The
possible mechanisms responsible for the quench front
acceleration are discussed. It is found that the traditional
concept of conduction-controlled quenching cannot explain the
acceleration provided by the nanoparticle layer on the surface. |
| first_indexed | 2024-09-23T16:16:26Z |
| format | Article |
| id | mit-1721.1/60933 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:16:26Z |
| publishDate | 2011 |
| publisher | American Society of Mechanical Engineers |
| record_format | dspace |
| spelling | mit-1721.1/609332022-09-29T19:18:28Z Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids Buongiorno, Jacopo McKrell, Thomas J. Hu, Lin-Wen Kim, Hyungdae Massachusetts Institute of Technology. Department of Nuclear Science and Engineering MIT Nuclear Reactor Laboratory Buongiorno, Jacopo Buongiorno, Jacopo Kim, Hyungdae McKrell, Thomas J. Hu, Lin-Wen Quenching of small stainless steel rods in pure water and nanofluids with alumina and diamond nanoparticles at low concentrations (0.1 vol%) was investigated experimentally. The rods were heated to an initial temperature of ~1000 °C and then plunged into the test fluid. The results show that the quenching behavior of the nanofluids is nearly identical to that of pure water. However, due to nanofluids boiling during the quenching process, some nanoparticles deposit on the surface of the rod, which results in much higher quenching rate in subsequent tests with the same rod. It is likely that particle deposition destabilizes the film-boiling vapor film at high temperature, thus causing the quenching process to accelerate, as evident from the values of the quench front speed measured by means of a high-speed camera. The acceleration strongly depends on the nanoparticle material used, i.e., the alumina nanoparticles on the surface significantly improve the quenching, while the diamond nanoparticles do not. The possible mechanisms responsible for the quench front acceleration are discussed. It is found that the traditional concept of conduction-controlled quenching cannot explain the acceleration provided by the nanoparticle layer on the surface. Korean Research Foundation (Korean Government (MOEHRD) (KRF- 2007-357-D00026)) AREVA Douglas C. Spreng 2011-02-11T21:08:27Z 2011-02-11T21:08:27Z 2009-06 Article http://purl.org/eprint/type/ConferencePaper ICNMM2009-82082 http://hdl.handle.net/1721.1/60933 Kim, H., et al. "Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids." Proceedings of the ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2009, June 22-24, 2009, Pohang, South Korea. en_US http://dx.doi.org/10.1115/ICNMM2009-82082 Proceedings of the ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2009 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Society of Mechanical Engineers J. Buongiorno via Chris Sherratt |
| spellingShingle | Buongiorno, Jacopo McKrell, Thomas J. Hu, Lin-Wen Kim, Hyungdae Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids |
| title | Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids |
| title_full | Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids |
| title_fullStr | Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids |
| title_full_unstemmed | Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids |
| title_short | Effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids |
| title_sort | effect of nanoparticle deposition on rewetting temperature and quench velocity in experiments with stainless steel rodlets and nanofluids |
| url | http://hdl.handle.net/1721.1/60933 |
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