Design of a two spool contra-rotating turbine for a turbo-fan engine
作者机构：Propulsion DivisionCSIR-National Aerospace LaboratoriesBangaloreKarnataka560017India Turbine GroupGas Turbine Research EstablishmentDRDOBangalore.Karnataka560093India
出 版 物：《Propulsion and Power Research》 (推进与动力（英文）)
年 卷 期：2020年第9卷第3期
页 面：225-239页
核心收录：
学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理]
基 金：Authors acknowledge GATET-GTRE,DRDO,India forthe financial assistance in this project Authors would like tothank Director and Head-Propulsion Division of CSIR-NAL for their support in carrying out this work Authorsalso thank‘Turbine Group-GTRE’and Versatile Turbine Test Rig team members
主 题：Contra-rotating turbine Computational fluid dynamics Vaned contra-rotating Two spool Unsteady CFD
摘 要：Contra-rotating turbines offer enhanced performance over their conventional corotating *** addition,vaneless contra-rotating turbine stages offer lesser stage length along with improved ***-rotating turbines with a vaned LP stages offer a controlled work-split between the stages over a wider range of operating conditions by maintaining inlet swirl to the second *** objective of the present work is to design an equivalent vaned contra-rotating turbine for an existing co-rotating configuration of a two-spool turbo fan *** contra-rotating turbine is designed by retaining the existing flow path and HP turbine,and redesigning the LP turbine for fixed radial distributions of inlet total temperature,pressure and swirl.A comparative study between performance of the co-rotating and contra-rotating turbines is carried out for different *** testing of the LP stator and rotor mean sections was carried out to validate the *** LP stage of contra-rotating turbine exhibits a performance improvement by 2%points at design point,as per flow *** reduced flow deflection in stator row is the primary reason for significant reduction in profile and secondary losses in contra-rotating turbine,which contributed to the performance improvement.A significant reduction of 23%in blade weight and 45% in LP stator vane count is obtained.
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