The varying effect of natural convection on shear stress rate on cylindrical surfaces

S. Sillanpää (Corresponding Author), M. Heinonen

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

In a dynamic weighing gas mass flow measurement, the gas mass flow rate is continuously determined by weighing a gas mass loss from a gas cylinder as a function of time. In this measurement method, the temperature difference between the wall of the gas cylinder and ambient air cannot be avoided. Due to natural convection flow, a shear stress appears on the wall of the cylinder. Because of the dynamic nature of the method, the shear stress rate varies as a function of time during the measurement period. In this paper, the magnitude and effect of the variable shear stress was studied theoretically and experimentally. Obtained results showed good agreement between the theory and experiments.
Original languageEnglish
Pages (from-to)459-466
JournalExperimental Thermal and Fluid Science
Volume32
Issue number2
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

Natural convection
Gas cylinders
Shear stress
Gases
Weighing
Flow measurement
Flow rate
Air
Experiments
Temperature

Keywords

  • natural convection
  • shear stress
  • dynamic weighing

Cite this

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abstract = "In a dynamic weighing gas mass flow measurement, the gas mass flow rate is continuously determined by weighing a gas mass loss from a gas cylinder as a function of time. In this measurement method, the temperature difference between the wall of the gas cylinder and ambient air cannot be avoided. Due to natural convection flow, a shear stress appears on the wall of the cylinder. Because of the dynamic nature of the method, the shear stress rate varies as a function of time during the measurement period. In this paper, the magnitude and effect of the variable shear stress was studied theoretically and experimentally. Obtained results showed good agreement between the theory and experiments.",
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The varying effect of natural convection on shear stress rate on cylindrical surfaces. / Sillanpää, S. (Corresponding Author); Heinonen, M.

In: Experimental Thermal and Fluid Science, Vol. 32, No. 2, 2007, p. 459-466.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The varying effect of natural convection on shear stress rate on cylindrical surfaces

AU - Sillanpää, S.

AU - Heinonen, M.

PY - 2007

Y1 - 2007

N2 - In a dynamic weighing gas mass flow measurement, the gas mass flow rate is continuously determined by weighing a gas mass loss from a gas cylinder as a function of time. In this measurement method, the temperature difference between the wall of the gas cylinder and ambient air cannot be avoided. Due to natural convection flow, a shear stress appears on the wall of the cylinder. Because of the dynamic nature of the method, the shear stress rate varies as a function of time during the measurement period. In this paper, the magnitude and effect of the variable shear stress was studied theoretically and experimentally. Obtained results showed good agreement between the theory and experiments.

AB - In a dynamic weighing gas mass flow measurement, the gas mass flow rate is continuously determined by weighing a gas mass loss from a gas cylinder as a function of time. In this measurement method, the temperature difference between the wall of the gas cylinder and ambient air cannot be avoided. Due to natural convection flow, a shear stress appears on the wall of the cylinder. Because of the dynamic nature of the method, the shear stress rate varies as a function of time during the measurement period. In this paper, the magnitude and effect of the variable shear stress was studied theoretically and experimentally. Obtained results showed good agreement between the theory and experiments.

KW - natural convection

KW - shear stress

KW - dynamic weighing

U2 - 10.1016/j.expthermflusci.2007.05.009

DO - 10.1016/j.expthermflusci.2007.05.009

M3 - Article

VL - 32

SP - 459

EP - 466

JO - Experimental Thermal and Fluid Science

JF - Experimental Thermal and Fluid Science

SN - 0894-1777

IS - 2

ER -