On the theory of oscillating-body viscometers

✍ Scribed by J.C. Nieuwoudt; J. Kestin; J.V. Sengers

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 899 KB
• Volume: 142
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(87)90017-3

✦ Synopsis

Oscillating-body viscometers have been used for accurate measurement of the viscosity of gases and, more recently, of liquids. In this paper we reconsider the theory of the working equations of oscillating-disk viscometers. Based on approximate but closed-form solutions of the working equations, we investigate the possibility of determining both the viscosity and the density of a liquid from the damped oscillating motion of a disk suspended in the fluid. In addition, we discuss calibration procedures when the design conditions for an absolute measurement of the viscosity and the density cannot be met.