Тип публикации: статья из журнала
Год издания: 2016
Идентификатор DOI: 10.1134/S0015462816020071
Ключевые слова: nanofluids, heat transfer coefficient, pressure drop, viscosity, turbulent flow
Аннотация: Turbulent flow of nanofluids based on the distilled water with aluminum and silicon oxide particles of different sizes in a cylindrical channel is studied. The results of the measurements of the heat transfer coefficient and the pressure difference are presented. The maximum volume concentration of the particles was not greater thaПоказать полностьюn two percents. The dependence of the heat transfer coefficient on the nanoparticle concentration and their sizes and material is studied. It is shown that a considerable increase in the nanofluid heat transfer coefficient, compared with the corresponding value for water, may generally be expected. At the same time, the heat transfer coefficient of a nanofluid depends on the nanoparticle size and material; because of this, under certain conditions the nanofluid heat transfer coefficient can turn out to be lower than that of the baseline fluid. Situations, when this can occur, are established. It is for the first time experimentally shown that the nanofluid viscosity coefficient depends not only on the nanoparticle size but also on its material.
Журнал: FLUID DYNAMICS
Выпуск журнала: Vol. 51, Is. 2
Номера страниц: 189-199
ISSN журнала: 00154628
Место издания: NEW YORK
Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER