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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™: 0.5

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

Выпуски:
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.2018025171
pages 39-61

EXPERIMENTAL AND SIMULATION STUDIES ON AERODYNAMIC DRAG REDUCTION OVER A PASSENGER CAR

Ajitanshu Vedrtnam
Vinoba Bhave Research Institute, Allahabad, UP, 211004, India; Department of Mechanical Engineering, Invertis University, Bareilly, UP, 243001, India; Translational Research Centre, Institute of Advanced Materials, VBRI, Linkoping 58330, Sweden
Dheeraj Sagar
Department of Mechanical Engineering, Invertis University, Bareilly, UP, 243001, India

Краткое описание

The present experimental and simulation investigation includes aerodynamic drag reduction over a car by flow control using a vortex generator (VG) and spoiler. The model of the car was fabricated on the scale of 15:1 using plaster of Paris. A test facility is built to convincingly replicate the flow over a model of a high-speed car. Primarily, the car model is tested at different incidence angles of flow to obtain total drag over the model. Furthermore, 26 different combinations were tested to find out the condition for minimum drag. In the crosswind condition (± 30 deg), 36.36% additional area of the car is exposed to the direct wind that causes an increment of 38.61% in the drag coefficient. The increment of flow angle from 0 to 30 deg causes flow separation on the roof of the vehicle near the leeward corner. The maximum 68.18% drag coefficient is reduced at β = 0 deg, α = +45 deg, and the co-rotating VG. The best combination in terms of a surface static pressure coefficient rise (from -0.041 to +2.622) is found at β = 0 deg, α = 0 deg, and the VG attached to the upstream of the spoiler. A formulated computational fluid dynamics model is in good match with the experimental results.


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