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2010•Yibiao jishu yu chuanganqiRequires access

Development of Vibrating-Wire Viscometer/Densimeter

Xiaodong Zhao

Open publisher page 1 citations

Abstract

Viscosity and density are the important thermophysical properties of fluids.This paper designed a new vibrating-wire viscometer which could be used to measurement the density of the sample simultaneously.The measurement system and data acquisition program were developed.In order to get the values of viscosity and density,a nonlinear fitting method based on Levenberg Marquardt algorithm was also presented.The instrument parameters of the vibrating-wire viscometer was calibrated for further research.

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What this paper is about

Viscosity and density are the important thermophysical properties of fluids.This paper designed a new vibrating-wire viscometer which could be used to measurement the density of the sample simultaneously.The measurement system and data acquisition program were developed.In order to get the values of viscosity and density,a nonlinear fitting method based on Levenberg Marquardt algorithm was also presented.The instrument parameters of the vibrating-wire viscometer was calibrated for further research.

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Available abstract

Viscosity and density are the important thermophysical properties of fluids.This paper designed a new vibrating-wire viscometer which could be used to measurement the density of the sample simultaneously.The measurement system and data acquisition program were developed.In order to get the values of viscosity and density,a nonlinear fitting method based on Levenberg Marquardt algorithm was also presented.The instrument parameters of the vibrating-wire viscometer was calibrated for further research.

Key concepts: Viscometer, Vibrating wire, Viscosity, Materials science, Nonlinear system, Ubbelohde viscometer, Mechanics, Mechanical engineering

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