Improved computation of pressure coefficient and temperature coefficient of ultrasonic velocity in organic liquids

摘要

Based on Jacobson's molecular free length theory in liquids and the relationship be- tween the ultrasonic velocity and the molecular free length in organic liquids, the equations of pressure coefficient and temperature coefficient of ultrasonic velocity in organic liquids are de- rived. The calculated pressure coefficient and temperature coefficient of ultrasonic velocity are in good agreement with the measured results.