International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
AERODYNAMIC ANALYSIS OF RAMP TYPE VORTEX GENERATOR ON NACA 2215 AIRFOIL Nilesh Nahar1, Manoj Sharma2, Amit Kumar Jha3, Rahul Joshi4 1
M.Tech student, Design of Mechanical Systems, Department of Mechanical Engineering, Swami Vivekanand College of Engineering, M.P. 2 Assistant Professor& HOD, Department of Mechanical Engineering, Swami Vivekanand College of Engineering, M.P. 3 Senior Manager, HAL, Bangalore 4 Associate Professor, Department of Mechanical Engineering, Swami Vivekanand College of Engineering, M.P. ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract – The project is on Aerodynamic Analysis of Ramp Type Vortex Generator on NACA 2215 Airfoil. Our goal is to design and analyze two models namely a ramp type vortex generator on a 3D airfoil (Wing) and normal wing without VG for Reynolds number value 68.47x10^5. We analyzed it to determine whether VG giving an optimum performance in effectively postponing the wing stall angle. After that, we compared the analytical results accordingly. Designing was done by using Ansys Design modeler. NACA 2215 airfoil were chosen on which the vortex generators have been designed and modeled. The design will then be analyzed (CFD) by using ANSYS R20 software.
Fig 1.1: Wing with vortex generators 1.2 Boundary Layer Separation on An Airfoil with And Without VG’s All solid objects passing through a fluid acquire a fluid boundary layer around them, where viscous forces arise in the fluid layer near the surface of the solid. Boundary layers can be either laminar or turbulent. A reasonable judgment as to whether the boundary layer will be laminar or turbulent can be made by calculating the Reynolds number of the local flow conditions.
Key Words: NACA 2215, ANSYS, Reynolds number, Ramp Type Vortex Generator
1.
INTRODUCTION
A vortex generator is an aerodynamic device consisting of a small blade usually attached to a lifting surface or airfoil (such as an aircraft wing) or a wind turbine rotor blade. The vortex generators are installed quite close to the leading edge of the airfoil to ensure steady airflow over the trailing edge control surfaces to ensure the effectiveness of the trailing edge control surfaces. 1.1 Working of Vortex Generators
Vortex generators create strong tip vortices that Fig 1.2: Flow before VG and After VG bring in high energy air from the outer nozzle to mix with/replace slower moving air in the boundary layer. It 1.3 Smart Vortex Generators reduces the effects of adverse pressure gradients and prevents separation. The VG creates a vortex that, by removing a portion of the slow-moving boundary layer in contact with the airfoil surface, delays local flow separation and aerodynamic stall, thereby improving the efficiency of wings and control
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