Sound Wave Refraction's Influence On Temperature Field Detection Techniques Used Acoustic In Furnace

Acoustic temperature field measurement technique is a new technique and developed fleetly from 80 decade last century. Measuring the furnace profile temperature used acoustic pyrometer, owing to temperature distribution in furnace is inhomogeneous, sound wave refract when transmit through gas, so sound wave path is not straight line, but conventional acoustic CT algorithm consider sound wave path to be straight, thus must bring on biggish measuring error. Calculate sound wave propagation path by numerical simulation, reconstruct two dimensional temperature distribution in furnace by acoustic CT algorithm, by taking account the refraction of sound wave, the result shows that accuracy of reconstructed temperature field is improved.