K-1433 非構造格子を用いたオイルセパレータ内の油面挙動の数値シミュレーション(S16-3 キャビテーションおよび気液系流れのダイナミクス(3))(S16 キャビテーションおよび気液系流れのダイナミクス)

概要

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An oil separator is used to separate a gas and a liquid from a gas-liquid mixed flow. However, a waterspout occurs on the free surface of the oil gathered under the chamber. The waterspout elevates a large amount of oil and releases it into a discharge pipe. This process significantly lowers the efficiency of the oil separator. To calculate the flow fields of the waterspouts, we used a cubic interpolated propagation (CIP) code. The code calculates two-phase flows in a three-dimensional unstructured grid space. Also, using the code, we calculated the flow fields of the oil separator. The results showed that low-pressure core generated in the discharge pipe was the driving force of the waterspouts. Moreover, the low-pressure core grew under the circulatory motion of the vortex that formed by the swirl flow.
一般社団法人日本機械学会の論文
2001-08-22