Journal of Dalian Maritime University >
2018 , Vol. 44 >Issue 2: 74 - 80
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2018.02.012
Effect of inlet arcs adjustment on double-inlet re-entry turbine performance
Received date: 2017-10-22
Revised date: 2017-11-02
Online published: 2017-11-02
In order to explore the effect of structural adjustments on doubleinlet reentry turbine inner flow field and performance, the relative circumferential position of two inlet arcs and the stagger angle of stators in second stage inlet arc were adjusted. The numerical study and analysis of the adjusted schemes were carried out by using the three dimensional numerical calculation method. Results show that with the relative circumferential distance becomes larger, the circumferential size of the reentry duct becomes larger, and total pressure loss in the reentry duct increases and the total static efficiency is reduced by 0.41% at most. The stator stagger angle adjustment of second inlet arc can significantly improve the internal flow state of rotor blade row, and the total static efficiency is improved by 1.03% comparing with the prototype while the stagger angle is increased by 6°.
CHEN Di-yun , ZHONG Jing-jun , HAN Ji-ang . Effect of inlet arcs adjustment on double-inlet re-entry turbine performance[J]. Journal of Dalian Maritime University, 2018 , 44(2) : 74 -80 . DOI: 10.16411/j.cnki.issn1006-7736.2018.02.012
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