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Title: Inline Ultrasonic Rheometry by Pulsed Doppler

Abstract

This will be a discussion of the non-invasive determination of the viscosity of a non-Newtonian fluid in laminar pipe flow over the range of shear rates present in the pipe. The procedure used requires knowledge of the flow profile in and the pressure drop along a long straight run of pipe. The profile is determined by using a pulsed ultrasonic Doppler velocimeter. This approach is ideal for making non-invasive, real-time measurements for monitoring and control. Rheograms of a shear thinning, thixotropic gel will be presented. The operating parameters and limitations of the Doppler-based instrument will be discussed. The most significant limitation is velocity gradient broadening of the Doppler spectra near the walls of the pipe. This limitation can be significant for strongly shear thinning fluids (depending also on the ratio of beam to pipe diameter and the transducer's insertion angle).

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
898106
Report Number(s):
PNNL-SA-46412
KP1301020; TRN: US200705%%415
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Ultrasonics, 44(2006):e477- e482
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; NONDESTRUCTIVE TESTING; MONITORING; PRESSURE DROP; SHEAR; ULTRASONIC WAVES; VISCOSITY; LAMINAR FLOW; PIPES; VELOCIMETERS

Citation Formats

Pfund, David M., Greenwood, Margaret S., Bamberger, Judith A., and Pappas, Richard A. Inline Ultrasonic Rheometry by Pulsed Doppler. United States: N. p., 2006. Web. doi:10.1016/j.ultras.2006.05.027.
Pfund, David M., Greenwood, Margaret S., Bamberger, Judith A., & Pappas, Richard A. Inline Ultrasonic Rheometry by Pulsed Doppler. United States. doi:10.1016/j.ultras.2006.05.027.
Pfund, David M., Greenwood, Margaret S., Bamberger, Judith A., and Pappas, Richard A. Fri . "Inline Ultrasonic Rheometry by Pulsed Doppler". United States. doi:10.1016/j.ultras.2006.05.027.
@article{osti_898106,
title = {Inline Ultrasonic Rheometry by Pulsed Doppler},
author = {Pfund, David M. and Greenwood, Margaret S. and Bamberger, Judith A. and Pappas, Richard A.},
abstractNote = {This will be a discussion of the non-invasive determination of the viscosity of a non-Newtonian fluid in laminar pipe flow over the range of shear rates present in the pipe. The procedure used requires knowledge of the flow profile in and the pressure drop along a long straight run of pipe. The profile is determined by using a pulsed ultrasonic Doppler velocimeter. This approach is ideal for making non-invasive, real-time measurements for monitoring and control. Rheograms of a shear thinning, thixotropic gel will be presented. The operating parameters and limitations of the Doppler-based instrument will be discussed. The most significant limitation is velocity gradient broadening of the Doppler spectra near the walls of the pipe. This limitation can be significant for strongly shear thinning fluids (depending also on the ratio of beam to pipe diameter and the transducer's insertion angle).},
doi = {10.1016/j.ultras.2006.05.027},
journal = {Ultrasonics, 44(2006):e477- e482},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2006},
month = {Fri Dec 22 00:00:00 EST 2006}
}