Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.3390/mi13091452
Ключевые слова: curved channel, flow recirculation, glycerol, microfluidics, secondary flow, viscometer, viscosity
Аннотация: This article presents a new approach to determining the viscosity of Newtonian fluid. The approach is based on the analysis of the secondary Dean flow in a curved channel. The study of the flow patterns of water and aqueous solutions of glycerin in a microfluidic chip with a U-microchannel was carried out. The advantages of a microПоказать полностьюfluidic viscometer based on a secondary Dean flow are its simplicity, quickness, and high accuracy in determining the viscosity coefficient of a liquid. A viscosity image in a short movie represents fluid properties. It is revealed that the viscosity coefficient can be determined by the dependence of the recirculation angle of the secondary Dean flow. The article provides a correlation between the Dean number and the flow recirculation angle. The results of the field experiment, presented in the article, correlate with the data obtained using computational fluid dynamics and allow for selecting parameters to create microfluidic viscometers with a U-shaped microchannel. © 2022 by the authors.
Выпуск журнала: Vol. 13, Is. 9
Номера страниц: 1452
ISSN журнала: 2072666X