Application of ultrasonic Doppler velocimetry to molten glass by using broadband phase difference method

作者：Ihara Tomonori^*; Tsuzuki Nobuyoshi; Kikura Hiroshige

来源：Flow Measurement and Instrumentation, 2016, 48: 90-96.

DOI：10.1016/j.flowmeasinst.2015.10.011

• Ultrasonic Doppler velocimetry
• Buffer rod technique
• Broadband phase difference method
• High temperature
• Molten glass

An ultrasonic velocity profile (UVP) measurement in high temperature molten glass was presented using buffer rod technique. A ceramic buffer rod was used to transmit ultrasound into molten glass. The rod had a taper shape and porous cladding to suppress trailing echo, which is the spurious echo in the buffer rod measurement. The broadband signal processing method was presented to improve noise tolerance in velocity estimation. This method is based on the phase difference method, which is originally proposed as a narrowband method. Measurable distance of the UVP measurement was investigated combining the buffer rod and the broadband signal processing method. Experiment was conducted at the temperature from 1000 degrees C to 1200 degrees C. As a preliminary test, motion tracking in molten glass was successfully demonstrated.

• 出版日期2016-4