In this paper a measurement chain for bubble velocity measurements has been designed, developed and tested. The sensing element used for testing is a double fiber optic probe. Error sources associated with the measurement techniques are illustrated by theoretical models. The conclusions are also valid for other sensing elements used to detect bubbles in two-phase flow. A special purpose data acquisition and processing system has been implemented to obtain velocity data from the sensor signals. The system can be used with other kinds of sensing elements. A test bench, suitable for generating horizontal air-water two-phase flows with well controllable bubble velocity, has been installed in a water test rig in order to test and calibrate the measurement chain using a double fiber optic sensing element.
Error analysis based development of a bubble velocity measurement chain
ROSSI, Gianluca
1996
Abstract
In this paper a measurement chain for bubble velocity measurements has been designed, developed and tested. The sensing element used for testing is a double fiber optic probe. Error sources associated with the measurement techniques are illustrated by theoretical models. The conclusions are also valid for other sensing elements used to detect bubbles in two-phase flow. A special purpose data acquisition and processing system has been implemented to obtain velocity data from the sensor signals. The system can be used with other kinds of sensing elements. A test bench, suitable for generating horizontal air-water two-phase flows with well controllable bubble velocity, has been installed in a water test rig in order to test and calibrate the measurement chain using a double fiber optic sensing element.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
