Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Druckformat: 2152-5102
ISSN Online: 2152-5110

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

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v32.i2.30
pages 157-183

Aerodynamics of a Cambered Airfoil in Ground Effect

M. Rafiuddin Ahmed
School of Engineering and Physics, Faculty of Science and Technology, The University of the South Pacific, Suva, Fiji

ABSTRAKT

The flow characteristics over a NACA 4415 airfoil are studied experimentally at a Reynolds number of 2.4 · 105 by varying the angle of attack from 0 to 10° and ground clearance of the trailing edge from five percent of chord to eighty percent. The pressure distribution on the airfoil surface was obtained, velocity survey over the surface was performed, wake region was explored and lift and drag forces were measured. A strong suction effect was observed on the lower surface for angles of attack of 0 and 2.5° at small ground clearances. For the angle of attack of 0°, a separation bubble formed on the lower surface for the smallest ground clearance while for 2.5°, laminar separation occurred from the lower surface well ahead of the trailing edge. Increased suction was observed on the upper surface for small ground clearances. For the angle of attack of 10°, the flow on the upper surface could not withstand the adverse pressure gradient at small ground clearances and separated from the surface resulting in a loss of lift and an increase in drag.


Articles with similar content:

VISUALIZATION OF END WALL FLOW IN A LARGE DEFLECTION TURBINE ROTOR CASCADE: EFFECT OF TIP CLEARANCE AND INCIDENCE ANGLE
Journal of Flow Visualization and Image Processing, Vol.8, 2001, issue 4
Mukka Govardhan, R. M. Wankhade, B.H.Lakshmana Gowda
EXPERIMENTAL INVESTIGATIONS ON FLUIDIC CONTROL OVER AN AIRFOIL
Journal of Flow Visualization and Image Processing, Vol.13, 2006, issue 3
J. Favier, E. Sommier, Jean Tensi, S. Bourgois
INFLUENCE OF ANGLE OF ATTACK ON SYNTHETIC JET EFFECTIVENESS AS FOUND WITH COEFFICIENT OF MOMENTUM
TSFP DIGITAL LIBRARY ONLINE, Vol.8, 2013, issue
Mark A. Feero, Pierre E. Sullivan, Sebastian D. Goodfellow, Philippe Lavoie
LIQUID CRYSTAL VISUALIZATION OF THE VORTEX FLOW FIELD WITHIN A YAWED RECTANGULAR CAVITY AT MACH 2
Journal of Flow Visualization and Image Processing, Vol.7, 2000, issue 3
Norman Toy, Eric Savory, Peter J. Disimile
UNSTEADY SURFACE PRESSURE INDUCED BY TURBULENCE OVER ASYMMETRICALLY BEVELED TRAILING EDGE
TSFP DIGITAL LIBRARY ONLINE, Vol.10, 2017, issue
Scott C. Morris , Yaoyi Guan