The ultrasonic measurement in nitrogen, carbon dioxide and nitrogen-carbon dioxide mixtures at medium pressure and temperature
Leung, Pui Lo
Master of Science
Velocity of sound measurements have been made in pure nitrogen, pure carbon-dioxide and mixtures of these two gases at a constant pressure of 50 psi over a temperature range from 75°F to 530°F. From the experimental data obtained; the ratio of specific heats for the various as mixtures of nitrogen and carbon dioxide have been calculated. All measurements were taken at a frequency of 570kc. The present work represents a portion of the program at present being carried out with as mixtures. Further work will deal with higher as pressures and temperatures in addition to the variation of frequency of the sound source. Curves are included showing the effect or gas composition on the acoustic Velocity at a constant gas mixture pressure and temperature. Other Curves are included showing the increase in acoustic velocity with temperature for a given as mixture at constant pressure.