Liquid flow in a worm, known as axial-vortex stage (AVS), is regarded, when the worm is fitted in a smooth bushing and in a vane cascade (vane lattice), like in a positive displacement pump operating with a leak, as a reverse flow. In such a case, the worm and AVS head equals the hydraulic loss in the reverse flow, and the calculation procedure in this case is much simpler. It is shown that calculation using geometric parameters of the worm and AVS yields values that agree well with experimental values.
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 8, pp. 22–25, August, 2009.
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Zotov, B.N. A new approach to procedure for calculating head characteristics of worms and axial-vortex pump stage. Chem Petrol Eng 45, 484 (2009). https://doi.org/10.1007/s10556-009-9221-0
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DOI: https://doi.org/10.1007/s10556-009-9221-0