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Uncertainty in the TBLC and bulk dissipation corrections for TCU1 / argon.

Sutton, G J M (2009) Uncertainty in the TBLC and bulk dissipation corrections for TCU1 / argon. NPL Report. ENG 20

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Abstract

The uncertainty in the calculated Thermal Boundary Layer Correction (TBLC) / Bulk dissipation correction due to the uncertainty in the input parameters is calculated for the sphere TCU1 and argon gas. For typical measurement uncertainties, we find that the combined fractional uncertainty is a maximum at the lowest measurement pressure (50 kPa) and varies from:
0.26 PPM to 0.10 PPM for dF/F moving from the (0,2) to (0,10) mode.
0.28 PPM to 0.17 PPM for G/F moving from the (0,2) to (0,10) mode.
At P = 100 kPa, both uncertainties are less than 0.2 PPM.

Item Type: Report/Guide (NPL Report)
NPL Report No.: ENG 20
Keywords: temperature, uncertainty, boltzmann, constant, acoustic, resonator, TBLC, bulk, dissipation
Subjects: Engineering Measurements
Engineering Measurements > Thermal
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4533

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