Commenced in January 2007
Paper Count: 31743
Computational Analysis of Cavity Effect over Aircraft Wing
Abstract:This paper seeks the potentials of studying aerodynamic characteristics of inward cavities called dimples, as an alternative to the classical vortex generators. Increasing stalling angle is a greater challenge in wing design. But our examination is primarily focused on increasing lift. In this paper, enhancement of lift is mainly done by introduction of dimple or cavity in a wing. In general, aircraft performance can be enhanced by increasing aerodynamic efficiency that is lift to drag ratio of an aircraft wing. Efficiency improvement can be achieved by improving the maximum lift co-efficient or by reducing the drag co-efficient. At the time of landing aircraft, high angle of attack may lead to stalling of aircraft. To avoid this kind of situation, increase in the stalling angle is warranted. Hence, improved stalling characteristic is the best way to ease landing complexity. Computational analysis is done for the wing segment made of NACA 0012. Simulation is carried out for 30 m/s free stream velocity over plain airfoil and different types of cavities. The wing is modeled in CATIA V5R20 and analyses are carried out using ANSYS CFX. Triangle and square shapes are used as cavities for analysis. Simulations revealed that cavity placed on wing segment shows an increase of maximum lift co-efficient when compared to normal wing configuration. Flow separation is delayed at downstream of the wing by the presence of cavities up to a particular angle of attack.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1126437Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1276
 Srivastave. D, “Flow controls over airfoils using different shaped dimples” BITS Bilani, K.K Birla Goa, India-403726, 2012 pp 92-97.
 Livya. E, Anitha. G and Valli. P “Aerodynamic analysis of dimple effect over aircraft wing” International journal of mechanical aerospace industrial and mechatronics engineering, Vol-9. No 2, 2015 pp 350-353.
 Md. Amzad Hossain and Md. Nizzam Uddin, “Experimental study of aerodynamic characteristics of airfoils using different shaped dimples” ISSN (e):2319 The IJCE Vol-4. No1, 2015 pp13-17.
 Bhadri Rajasai, Ravi Tej, “Aerodynamic effects of dimples on aircraft wing” Intl. Conf. On Advances in Mechanical, Aeronautical and Production Techniques - MAPT 2015, ISBN: 978-1-63248-072-9.
 Saarang S. Mahamuni.,“A Review on Study of Aerodynamic Characteristics of Dimple Effect on Wing” International journal of aerospace and mechanical engineering, ISSN(O): 2393-8609, Vol-2. No2, 2015.
 Makwana. P.B, Makadiya. J.J, “Numerical simulation of flow over airfoil and different techniques to reduce flow separation along with basic CFD model: A review study” ISSN: 2278-0181, 2014 PP 399-404.