© 1961 by Oxford University Press
A THEORETICAL STUDY OF THE DIFFUSION OF TRACER GAS IN AN AIRWAY
( Mining Research Establishment National Coal Board, Worton Hall, Isleworth )
The theory of G. I. Taylor relating to diffusion in a turbulent stream is used to provide constants appropriate to the diffusion of gas in an airway. The diffusion equation is solved for steady and instantaneous gas sources of various types in airways of arbitrary cross-section, and the mixing length for a source waved about in the airway is estimated. The work relates to the measurement of air flow in airways when the use of anemometers is not possible.