複ピット吸水槽内の水位の揺動現象及び渦対策 [in Japanese] Water Level Fluctuation in Pump Sump with Coupled Pit and Countermeasures Against Harmful Vortices [in Japanese]
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In the case of pump sump consist of mirror symmetrical couple pits, alternative fluctuation of water levels of each pit was observed. This phenomenon was caused by fluctuation of flow pattern at expanding duct upstream of pump pits. In this report, we demonstrate that modern CFD result could predict this phenomenon. <BR>Also, we describe about some mechanism of submerged and air-entrained vortices in the pits, and demonstrate practical contermeasures of these destructive vortices.
Turbomachinery 34(8), 471-476, 2006-08-10
Turbomachinery Society of Japan