Ultrasound Measurement Technique for Validation of Cryogenic Flows

Proceedings

Robert Schmidt¹  Klaus Stefan Drese¹  Gerhard Lindner¹  David Becker¹ 

[1] Institute of Sensor and Actuator Technology (ISAT), Coburg University of Applied Sciences and Arts, 96450 Coburg, Germany;

关键词: ultrasound transmission;    flow imaging;    cryogenic two-phase flow;    gas and liquid flow;    ultrasound tomography;    cryogenic ultrasound sensors;   

DOI  :  10.3390/proceedings2131090

来源: DOAJ

【 摘 要 】

An ultrasound sensor system based on the transmission-mode approach is developed to enable the monitoring and sensing of cryogenic liquids and gases—especially gaseous bubbles and gas-liquid interfaces in liquid nitrogen (LN₂). Common sensors do not meet requirements of cryogenic and microgravity-environments. Therefore, a special encapsulation design for the optimization of the electrical connection and the mechanical coupling of the ultrasound sensors is needed. The ultrasound system is qualified in LN₂ and is able to measure bubbles (size and location) and fill levels with a high spatial resolution in a submillimetre range and a sampling rate of more than 500 Hz.

【 授权许可】

Unknown