Evaluation of a falling sinker-type viscometer at high pressure using edible oil

C.J. Schaschke, S. Abid, I. Fletcher, M.J. Heslop

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The performance of a high pressure failing sinker-type viscometer has been evaluated both by experiment and by CFD and is, for the first time, such an evaluation has been reported. This type of viscometer is used to determine the viscosity of liquids at high isostatic pressure. By assuming the existence of fully developed laminar flow between the descending sinker under the influence of gravity and the tube wall, an analytical solution to flow can be determined. However, due to end effects, a calibration fluid is required to correct determined viscosity data. Using an edible oil as the test fluid, we examined the flow profile around the sinker during operation. By using CFD we have been able to confirm the presence of complex flow patterns. These are directly responsible for influencing the rate of sinker descent and thus the determination of viscosity data, which highlights the need for good sinker dimension selection as well as the need for calibration.
LanguageEnglish
Pages51-58
Number of pages7
JournalJournal of Food Engineering
Volume87
Issue number1
DOIs
Publication statusPublished - Jul 2008

Fingerprint

viscometers
Viscosity
Calibration
Oils
Pressure
oils
Gravitation
viscosity
calibration
laminar flow
gravity
liquids
testing
fluids

Keywords

  • high pressure
  • falling body viscometer
  • cfd
  • fluent
  • edible oil

Cite this

Schaschke, C.J. ; Abid, S. ; Fletcher, I. ; Heslop, M.J. / Evaluation of a falling sinker-type viscometer at high pressure using edible oil. In: Journal of Food Engineering. 2008 ; Vol. 87, No. 1. pp. 51-58.
@article{0809389a736f490d80e2e79cc0905161,
title = "Evaluation of a falling sinker-type viscometer at high pressure using edible oil",
abstract = "The performance of a high pressure failing sinker-type viscometer has been evaluated both by experiment and by CFD and is, for the first time, such an evaluation has been reported. This type of viscometer is used to determine the viscosity of liquids at high isostatic pressure. By assuming the existence of fully developed laminar flow between the descending sinker under the influence of gravity and the tube wall, an analytical solution to flow can be determined. However, due to end effects, a calibration fluid is required to correct determined viscosity data. Using an edible oil as the test fluid, we examined the flow profile around the sinker during operation. By using CFD we have been able to confirm the presence of complex flow patterns. These are directly responsible for influencing the rate of sinker descent and thus the determination of viscosity data, which highlights the need for good sinker dimension selection as well as the need for calibration.",
keywords = "high pressure, falling body viscometer, cfd, fluent, edible oil",
author = "C.J. Schaschke and S. Abid and I. Fletcher and M.J. Heslop",
note = "17th International Congress of Chemical and Process Engineering (CHISA), Prague, CZECH REPUBLIC, AUG 27-31, 2006",
year = "2008",
month = "7",
doi = "10.1016/j.jfoodeng.2007.09.032",
language = "English",
volume = "87",
pages = "51--58",
journal = "Journal of Food Engineering",
issn = "0260-8774",
number = "1",

}

Evaluation of a falling sinker-type viscometer at high pressure using edible oil. / Schaschke, C.J.; Abid, S.; Fletcher, I.; Heslop, M.J.

In: Journal of Food Engineering, Vol. 87, No. 1, 07.2008, p. 51-58.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Evaluation of a falling sinker-type viscometer at high pressure using edible oil

AU - Schaschke, C.J.

AU - Abid, S.

AU - Fletcher, I.

AU - Heslop, M.J.

N1 - 17th International Congress of Chemical and Process Engineering (CHISA), Prague, CZECH REPUBLIC, AUG 27-31, 2006

PY - 2008/7

Y1 - 2008/7

N2 - The performance of a high pressure failing sinker-type viscometer has been evaluated both by experiment and by CFD and is, for the first time, such an evaluation has been reported. This type of viscometer is used to determine the viscosity of liquids at high isostatic pressure. By assuming the existence of fully developed laminar flow between the descending sinker under the influence of gravity and the tube wall, an analytical solution to flow can be determined. However, due to end effects, a calibration fluid is required to correct determined viscosity data. Using an edible oil as the test fluid, we examined the flow profile around the sinker during operation. By using CFD we have been able to confirm the presence of complex flow patterns. These are directly responsible for influencing the rate of sinker descent and thus the determination of viscosity data, which highlights the need for good sinker dimension selection as well as the need for calibration.

AB - The performance of a high pressure failing sinker-type viscometer has been evaluated both by experiment and by CFD and is, for the first time, such an evaluation has been reported. This type of viscometer is used to determine the viscosity of liquids at high isostatic pressure. By assuming the existence of fully developed laminar flow between the descending sinker under the influence of gravity and the tube wall, an analytical solution to flow can be determined. However, due to end effects, a calibration fluid is required to correct determined viscosity data. Using an edible oil as the test fluid, we examined the flow profile around the sinker during operation. By using CFD we have been able to confirm the presence of complex flow patterns. These are directly responsible for influencing the rate of sinker descent and thus the determination of viscosity data, which highlights the need for good sinker dimension selection as well as the need for calibration.

KW - high pressure

KW - falling body viscometer

KW - cfd

KW - fluent

KW - edible oil

UR - http://dx.doi.org/10.1016/j.jfoodeng.2007.09.032

U2 - 10.1016/j.jfoodeng.2007.09.032

DO - 10.1016/j.jfoodeng.2007.09.032

M3 - Article

VL - 87

SP - 51

EP - 58

JO - Journal of Food Engineering

T2 - Journal of Food Engineering

JF - Journal of Food Engineering

SN - 0260-8774

IS - 1

ER -