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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 47, 2020 Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v34.i4.30
pages 332-351

Unsteady Flow Behind Forward Swept Axial Compressor Rotors

Mukka Govardhan
Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras Chennai, India
O. G. Krishna Kumar
Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India
N. Sitaram
Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India

Краткое описание

The experimental investigations are conducted to improve the understanding of the complex flow pattern at the exit of forward and unswept axial compressor rotors. The unsteady flow pattern behind the experimental rotors was studied by a novel method using fast response probe. The data acquisition and post processing of the unsteady data was done using virtual instrumentation system. Forward swept rotor with 10° sweep showed improved pressure rise and efficiency compared to baseline unswept rotor. On the other hand, 20° forward swept rotor exhibited increased operating range and stall margin but at the expense of pressure rise. The wake pattern in the midspan regions with forward sweep indicated higher wake width and wake defect due to the high deceleration of the blade boundary layer flow brought about by the spanwise streamline shift. The reduction in wake width and wake defect with forward sweep near the hub suggests that the mixing loss near the hub is reduced.


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