Determination of high temperature gaseous diffusion coefficients by the point-source method.

Mills, Alan. (1973) Determination of high temperature gaseous diffusion coefficients by the point-source method. Doctoral thesis, University of Surrey (United Kingdom)..

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Abstract

The point-source method (due to Walker and Westenberg) has been used to measure binary gaseous diffusion coefficients in the nominal temperature range 300 - 900 K for the systems N[2]-CO[2] and N[2]-CH[4] with an accuracy of +/-3% The method consists essentially of measuring the steady-state concentration distribution downstream from a small source of 'trace' gas diffusing into a uniform laminar stream of a different 'carrier' gas. A detailed account is given of the construction and use of the apparatus, together with an analysis of possible sources of error. The N[2]-CO[2] results agree closely with literature values, both as diffusion coefficients and in respect of fitted intermolecular potentials; the reliability of the technique is thereby confirmed. The N[2]-CH[4] results are the most extensive available measurements, and are a few percent higher than literature values. In the course of the work sources of systematic error have been discovered in the two-wire anemometer of Walker and Westenberg.

Item Type:	Thesis (Doctoral)
Divisions :	Theses
Authors :	Name Email ORCID Mills, Alan.
Date :	1973
Contributors :	Contribution Name Email ORCID http://www.loc.gov/loc.terms/relators/THS
Additional Information :	Thesis (Ph.D.)--University of Surrey (United Kingdom), 1973.
Depositing User :	EPrints Services
Date Deposited :	22 Jun 2018 14:24
Last Modified :	06 Nov 2018 16:53
URI:	http://epubs.surrey.ac.uk/id/eprint/847802

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