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 language | English |
|---|---|
| Pages (from-to) | 459-466 |
| Journal | Experimental Thermal and Fluid Science |
| Volume | 32 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2007 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- natural convection
- shear stress
- dynamic weighing