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The contact angle o...
The contact angle of nanofluids as thermophysical property
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- Hernaiz, M. (author)
- Fundacion Tekniker
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- Alonso, V. (author)
- Fundacion Tekniker
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- Estellé, P. (author)
- University of Rennes I
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- Wu, Z. (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Sundén, B. (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Doretti, L. (author)
- University of Padova
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- Mancin, S. (author)
- University of Padova
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- Çobanoğlu, N. (author)
- Izmir Katip Celebi University
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- Karadeniz, Z. H. (author)
- Izmir Katip Celebi University
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- Garmendia, N. (author)
- Naitec
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- Lasheras-Zubiate, M. (author)
- Naitec
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- Hernández López, L. (author)
- Jaume I University
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- Mondragón, R. (author)
- Jaume I University
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- Martínez-Cuenca, R. (author)
- Jaume I University
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- Barison, S. (author)
- CNR Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia (ICMATE)
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- Kujawska, A. (author)
- Wrocław University of Science and Technology
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- Turgut, A. (author)
- Dokuz Eylül University
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- Amigo, A. (author)
- University of Santiago de Compostela
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- Huminic, G. (author)
- Transylvania University Brasov
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- Huminic, A. (author)
- Transylvania University Brasov
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- Kalus, M. R. (author)
- Particular GmbH
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- Schroth, K. G. (author)
- Institut für Luft- und Kältetechnik Dresden
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- Buschmann, M. H. (author)
- Institut für Luft- und Kältetechnik Dresden
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(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- English 14 s.
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In: Journal of Colloid and Interface Science. - : Elsevier BV. - 0021-9797. ; 547, s. 393-406
- Related links:
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http://dx.doi.org/10...
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Abstract
Subject headings
Close
- Droplet volume and temperature affect contact angle significantly. Phase change heat transfer processes of nanofluids – suspensions containing nanometre-sized particles – can only be modelled properly by understanding these effects. The approach proposed here considers the limiting contact angle of a droplet asymptotically approaching zero-volume as a thermophysical property to characterise nanofluids positioned on a certain substrate under a certain atmosphere. Graphene oxide, alumina, and gold nanoparticles are suspended in deionised water. Within the framework of a round robin test carried out by nine independent European institutes the contact angle of these suspensions on a stainless steel solid substrate is measured with high accuracy. No dependence of nanofluids contact angle of sessile droplets on the measurement device is found. However, the measurements reveal clear differences of the contact angle of nanofluids compared to the pure base fluid. Physically founded correlations of the contact angle in dependency of droplet temperature and volume are obtained from the data. Extrapolating these functions to zero droplet volume delivers the searched limiting contact angle depending only on the temperature. It is for the first time, that this specific parameter, is understood as a characteristic material property of nanofluid droplets placed on a certain substrate under a certain atmosphere. Together with the surface tension it provides the foundation of proper modelling phase change heat transfer processes of nanofluids.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- Contact angle
- Experimental strategy
- Influence of temperature
- Influence of volume
- Nanofluids
- Round robin test
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Hernaiz, M.
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Alonso, V.
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Estellé, P.
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Wu, Z.
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Sundén, B.
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Doretti, L.
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show more...
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Mancin, S.
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Çobanoğlu, N.
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Karadeniz, Z. H.
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Garmendia, N.
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Lasheras-Zubiate ...
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Hernández López, ...
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Mondragón, R.
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Martínez-Cuenca, ...
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Barison, S.
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Kujawska, A.
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Turgut, A.
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Amigo, A.
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Huminic, G.
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Huminic, A.
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Kalus, M. R.
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Schroth, K. G.
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Buschmann, M. H.
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show less...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Energy Engineeri ...
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Journal of Collo ...
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Lund University