Acoustic wave propagation in a sensor port: Experimental measurements and analytical model predictions

Experimental Investigation of Self-Excited Combustion Instabilities in a LOX/LNG Rocket Combustor

“…The pressure sensors are mounted to the combustion chamber wall with a recess of 15.75 mm. Two different models from Bergh and Tijdeman [18] and Zhang et al [19] have been used to analyze the influence on the measurements for this sensor ports. The approaches estimate the resonance frequency of these ports at 18,665 Hz [18] and at 16,319 Hz [19].…”

“…Two different models from Bergh and Tijdeman [18] and Zhang et al [19] have been used to analyze the influence on the measurements for this sensor ports. The approaches estimate the resonance frequency of these ports at 18,665 Hz [18] and at 16,319 Hz [19]. However, both methods predict a pressure ratio of the measured values below 1.1 and a phase shift of less than 2°for all frequencies of interest.…”

Education Reform Discussion of Sensor Principles and Applications Curriculum Based on Innovation and Entrepreneurship Ideas

“…Because the temperature is the most important in external information including light, temperature, pressure, magnetic, gas, sound and so on, especially it can affect the test accuracy of other sensors as one of the testing environment factors, the temperature sensor must be first introduced in sensor teaching materials [5]. As a sort of light sensor can be used to test gas pressure [6], some force sensors can measure sound wave [7], the light sensors and force sensors are put second and third chapters respectively. The magnetic sensors and gas/humidity sensors are arranged the fourth, fifth and sixth chapters, and the acoustic sensors are listed the seventh chapter since this kind includes the application of force and magnetic sensors [8,9].…”