Fluid Viscosity Measurement by Means of Secondary Flow in a Curved Channel

Fluid Viscosity Measurement by Means of Secondary Flow in a Curved Channel

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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 rms beauty luminizer x quad 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 microfluidic 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, doorking 1835-080 correlate with the data obtained using computational fluid dynamics and allow for selecting parameters to create microfluidic viscometers with a U-shaped microchannel.