Abstract
The tracer particle is necessary for Ultrasonic Doppler Method (UDM) as the reflection body of the supersonic wave. Use is difficult in the measurement of the environmental flow place though the nylon powder is used as a reflection body in the laboratory. Therefore, the coverage of UDM is limited. Then, it thinks it has a profitable action like the water quality purification and the generation of the physiology revitalization of the aquatic life, etc., and the micro bubble with a good follow with the liquid phase is used for the flowing quantity measurement of the environmental flow place as a reflection body of UDM. Then, this research mixed the micro bubble with an open channel, and measured UDM. And, the relation between the bubble diameter distribution and the amount of the inhalation bubble and the flow velocity distribution was experimentally requested.
