The effect of dye concentration on the viscosity of water in a scanning capillary-tube viscometer
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- 作者：Kim ; Sangho ; Cho ; Young I.
- 关键词：Scanning capillary-tube viscometer ; Power-law ; Water viscosity ; Dye concentration
- 刊名：Journal of Non-Newtonian Fluid Mechanics
- 出版年：2003
- 出版时间：March 20, 2003
- 年：2003
- 卷：111
- 期：1
- 页码：63-68
- 全文大小：90.0 K
文摘
A scanning capillary-tube viscometer (SCTV) determines the viscosity of an opaque liquid by measuring the changes in liquid level in two riser tubes. The current SCTV utilizes an optical sensor (i.e. charge-coupled device (CCD)) to measure the changes in the liquid level, where the liquid blocks the path of the light to the optical sensor. For a transparent liquid, one can use dye to make the liquid opaque. Hence, the present study investigated whether or not the addition of dye altered the viscosity of a transparent liquid such as distilled water. In this study, six different concentrations (0.5, 1, 2, 3, 4, and 7vol. % ) of dye were used. The present results demonstrated that the dye effect on the viscosity of dye–water solution was negligibly small as long as the dye concentration was less than 2vol. % .