Numerical study of variable camber continuous trailing edge flap at off-design conditions

Mohammed Abdul Raheem, Prasetyo Edi, Amjad A. Pasha, Mustafa M. Rahman, Khalid A. Juhany

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Numerical simulations are performed to study the outboard airfoil of advanced technology regional aircraft (ATRA) wings with five different variable camber continuous trailing edge flap (VCCTEF) configurations. The computational study aims to improve the aerodynamic efficiency of the airfoil under cruise conditions. The design of outboard airfoil complies with the hybrid laminar flow control design criteria. This work is unique in terms of analysis of the effects of VCCTEF on the ATRA wing’s outboard airfoil during the off-design condition. The Reynolds–Averaged Navier–Stokes equations coupled with the Spalart-Allmaras turbulence model are employed to perform the simulations for the baseline case and VCCTEF configurations. The current computational study is performed at an altitude of 10 km with a cruise Mach number of 0.77 and a Reynolds number of 2.16 × 107. Amongst all five configurations of VCCTEF airfoils studied, a flap having a parabolic profile (VCCTEF 123) configuration shows the maximum airfoil efficiency and resulted in an increase of 6.3% as compared to the baseline airfoil.
Original languageEnglish (US)
Pages (from-to)3185
Issue number16
StatePublished - Aug 20 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This article was funded by the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah. The authors, therefore, acknowledge with thanks DSR for technical and financial support. The authors would like to thank the Dean of Engineering and High-Performance Computing Centre (Aziz Supercomputer) ( for extending facilities to perform numerical simulations. We would like to thank Ahmed Z. Al-Garni from the Department of Aerospace Engineering, King Fahd University of Petroleum and Minerals and Rached Ben-Mansour from the Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals for the help during the CFD simulations.


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