Сибирский федеральный университет

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: All-Russian Scientific Conference on Thermophysics and Physical Hydrodynamics with the School for Young Scientists; Yalta, CRIMEA; Yalta, CRIMEA

Год издания: 2019

Идентификатор DOI: 10.1088/1742-6596/1359/1/012137

Аннотация: The influence of different volume concentrations and average diameters of Al2O3 nanoparticles on the contact angle of wetting between nanofluids and different substrates was experimentally investigated. The concentrations of aluminium oxide nanoparticles were varied from 0.0625 vol.% to 1 vol.%. The average diameters of aluminium oxide nanoparticles were varied from 43 nm to 150 nm. Andesite, diabase, gabbro-diabase and metabasalt were chosen as the substrates. The dependences of the value of the contact angle of wetting between nanofluids and different substrates were obtained as a result of the experiments. It was shown, that the contact angle of wetting nonlinearly depended on the nanoparticles volume concentration. In addition, it was found that the wetting angle also depends on the substrate material, on which the drop lies. It was also obtained that the contact angle of wetting between different substrates and nanofluids with average and huge nanoparticles ( 75 nm) increased 1.25-1.5 times even at the smallest concentration (0.0625 vol.%) and then achieved the plateau. In contrast, the contact angle of wetting between different substrates and nanofluids with small nanoparticles ( 50 nm) reached maximum at a concentration of 0.0625 vol.% and after that slowly decreased to the values lower than those for the pure water. © Published under licence by IOP Publishing Ltd.

Журнал: Journal of Physics: Conference Series

Выпуск журнала: Vol. 1359, Is. 1

Номера страниц: 12137

ISSN журнала: 17426588

Издатель: Institute of Physics Publishing

• Lobasov A.S. (Siberian Fed Univ, Krasnoyarsk 660074, Russia; RAS, SB, Inst Thermophys, Novosibirsk 630090, Russia)
• Minakov A.V. (Siberian Fed Univ, Krasnoyarsk 660074, Russia; RAS, SB, Inst Thermophys, Novosibirsk 630090, Russia)
• Pryazhnikov M.I. (Siberian Fed Univ, Krasnoyarsk 660074, Russia; RAS, SB, Inst Thermophys, Novosibirsk 630090, Russia)

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