Abstract
The viscosities of carbon dioxide and acetylene have been determined to temperatures of 700 and 600 K respectively using the method of capillary flow. The viscometer was a continuous-flow instrument incorporating a differential mercury manometer and a soap-film flow meter. A determination of the constantmin the kinetic energy term of the Hagen-Poiseuille equation, showed it to have a mean value of 1·064 and to be independent of Reynolds number over the range 150 to 600. The viscosity of carbon dioxide was found to differ from the previously accepted capillary values, being 3% higher at 700 K. It was, however, in good agreement with recent oscillating disk data. In the case of acetylene the data reported here is in good agreement with existing data at 300 K but is 3% higher at 500 K. The precision of the determinations is estimated at 0·4% for carbon dioxide and 0·6% for acetylene.

This publication has 28 references indexed in Scilit: