吸込水槽内に発生する空気吸込の出現時間率の測定(流体工学,流体機械)

概要

論文の詳細を見る
In order to get accurate measurements of air entrainment in a suction sump, we design a new and simple conductance-type electric bubble sensor, which can detect the existence of air bubbles inside a suction pipe with no disturbances by the sensor and with a fine spatial resolution. We focus on occurrence-time ratio y of the air entrainment, and compare the result by the present sensor with those by conventional two methods; namely, visual and auditory ones. As a result, we show the criteria which specify lower-accuracy conditions in the conventional methods. By the visual method, the accuracy of γ becomes low, when y is less than 0.05. By the auditory method, the accuracy of γ becomes low, when submergence depth S of the suction pipe is close to the critical one S_c.
社団法人日本機械学会の論文
2008-03-25