| Name | Supreeth.R |  |
| Designation | Associate Professor | |
| Experience | Teaching : 5.9years ; Research: 1 Years | |
| Area of Interest | Aerodynamics, Propulsion | |
| Date of Joining RVCE | 03rd February 2016 | |
| supreethr@rvce.edu.in |
PUBLICATIONS:
List of National Conference publications:
- Supreeth R, Srinivasan S, " Review Of The Influence Of Blade Surface Roughness On The Aerodynamic Performance Of Small Scale Low Speed Horizontal Axis Wind Turbine", Innovative Trends in Mechanical Engineering, 2016”
List of International Conference publications:
- Supreeth R, Dr A Arokkiaswamy, “Experimental Investigation of the effect of Protuberances on the Aerodynamic Performance of S823 Airfoil for Small Scale Wind Turbine Blades ”, International Conference on “Trends in Industrial Value Engineering Business & Social Innovation”(ICIVBS), April 2018
CAREER SUMMARY:
- Technically sound and an innovative thinker with over 6 years of teaching experience in the field of core aeronautical engineering and 1 year of research experience
- Proficient in handling various courses like Aerodynamics, Aircraft Propulsion, Gas Turbines etc.
- Adept in handling various software packages like CATIA, HYPERMESH, NASTRAN/PATRAN
- Good hands-on working knowledge on MSC NASTRAN/PATRAN solving problems involving Static Analysis, Buckling Failures, Thermal Analysis Problems, Frequency & Time Response Analysis, Non-Linear Analysis etc.
- Hands-on experience in Designing using CATIA and SOLIDWORKS- Drafting, Part Modelling, Assembly etc
- Expertise in preparation and managing documentation process of various National Accreditation like NBA & NAAC
ACADEMIC CREDENTIALS:
- PhD in Aeronautical Engineering, (Ongoing) Visvesvaraya technological University (VTU), Karnataka, India.
- Registered in August 2014
- Thesis Title: "Aero-Structural design and optimization of horizontal axis wind turbine rotor blade"
- Satisfactorily completed course work and carrying out research on wind turbine blade design.
- M.Tech in Aeronautical Engineering (2009-2011), MVJ college of Engineering, (VTU), Karnataka, India.
- Project Title "Density measurements in an axisymmetric heated air jet using the background oriented Schlieren technique"
- B.E in Mechanical Engineering, (2005-2009), Don Bosco Institute of Technology, (VTU), Karnataka, India.
- Project Title: "Investigation of Tribological behaviour of titanium-di-oxide coating on a steel specimen"
PROJECTS HANDLED:
PROJECT PROFILE 01# :
TITLE: “Design and weight optimization of the front spar of a trainer aircraft through FEM approach”
PROJECT DESCRIPTION: The objective of this work was to design a wing spar for a trainer aircraft and to perform linear static analysis. The experimental results were used to validate the obtained numerical results. Tools used to accomplish this project was CATIA, HYPERMESH and NASTRAN solver.
PROJECT PROFILE 02# :
TITLE: “Effect of ice accretion on the aerodynamic characteristics of a symmetrical NACA airfoil”
PROJECT DESCRIPTION: In this project a symmetrical NACA 0012 baseline airfoil and ice accreted NACA 0012 airfoil were developed. The aerodynamic characteristics of the clean and ice accreted airfoil were measured in an open type wind tunnel. Finally the results for both clean and ice accreted airfoils were compared which showed that the drag increased and lift decreased for the ice accreted model.
PROJECT PROFILE 03# :
TITLE: “Experimental and Numerical investigation of the effect of gurney flaps on the aerodynamic performance of an HAWT rotor blade”
PROJECT DESCRIPTION: The objective of this project was to determine the effectiveness of gurney flaps on the aerodynamic characteristics of a wind turbine blade. Here 0.5% of chord to 5% of chord gurney flaps were tested on the NACA 4412 cambered airfoil. By using CATIA modelling software the NACA 4412 airfoil was developed and performed aerodynamic evaluation via ANSYS software. Meanwhile Experimental results were also found for NACA 4412 airfoil. By comparing the results, it showed that the presence of gurney flap increased the lift of the airfoil which helps in increasing the power output from a wind turbine.
PROJECT PROFILE 04# :
TITLE: "Experimental Investigation of Various Winglet Configurations on the Starting Characteristics and Power Production of a Small Scale Horizontal Axis Wind Turbine Blade".
PROJECT DESCRIPTION: The main focus of this project involves the design and analysis of winglets for horizontal axis wind turbine blades. Winglets are small and nearly vertical wing like extended surfaces mounted at the tips of a wing intended to reduce drag on airplanes. However, some investigations have shown that these winglets can be used in wind turbine blades in order to maximize the power produced using wind resources. In this project the effect of winglets on the aerodynamic efficiency of the wind turbine rotor blade is studied. For the various configurations incorporated, it is evident that the winglets facilitate in significantly reducing the lift induced drag roughly by around 20%, which further improves the starting characteristics and eventually the efficiency of the blade. The results also indicate that the increase in overall performance improvement provided by the winglets in comparison with that for the blade without winglet is significantly dependent on the angles of incidence of the upper winglet.
PROJECT PROFILE 05# :
TITLE: "Effect of Leading Edge modifications on Low Reynolds Number Airfoils for small scale wind turbines".
PROJECT DESCRIPTION: The project investigates the effects of biologically inspired leading-edge protuberances on Wind Turbine blades. The study of humpback whales and their flipper performance was the impetus to modifying the leading edge of a Wind Turbine Blade in order to gain an aerodynamic advantage during operation. This study examines the effect of leading-edge modification on wing performance at a low Reynolds number (Re), since low Reynolds number flows have unique features, and the knowledge about this flight regime is extremely important for small scale Wind Turbine at low speeds. Simulations were executed on blades with leading-edge sinusoidal protuberances, in order to compare the lift and drag characteristics with that of a wing with a smooth leading edge. All wings had the same cross section of National Renewable Energy Laboratory (NREL) S823. The amplitude of protuberances significantly affects blade performance. Although the maximum lift generated by modified blades was lower than baseline, protuberances along the leading edge of the blades proved to have a profound advantage in obtaining higher lift at high angles of attack.
PROJECT PROFILE 06# :
TITLE: "Structural Design and Analysis of Bio-composite Horizontal Axis Wind Turbine Blade ".
PROJECT DESCRIPTION: A wind turbine is a device that converts the kinetic energy of the wind into mechanical energy, and this mechanical energy is used to produce electricity in modern application. Wind energy is one of the purest form of renewable energy. While harnessing it using wind turbines, the material manufacturing for rotor blades affects the environment by causing pollution in many ways. These drawbacks can be overcome by using bio-fibres which has similar properties to currently used materials. In the present work, the blade is designed by using the materials glass fiber and bio-fibers. Bio-fibers are mechanically characterized on their properties and flax fiber is used for the design purpose. Fabrication is carried out by Hand lay-up process for both the materials. Testing of the sample material is carried out as per ASTM standards. Results are obtained mainly on the Tensile, Flexure and impact properties and compared with that of Glass fibers. After the comparison, it was observed that the bio-composite specific properties are little less than the glass fibres and this difference is of small margin. These properties are enough for the application of wind turbine blades. By using bio-fibres we can reduce the environmental effects on blades, save weight and also reduce pollution which leads to global warming.
PROJECT PROFILE 07# :
TITLE: "Experimental Investigation of Biologically Inspired Leading Edge Protuberances on The Aerodynamic Characteristics of S823 Airfoil for Wind Turbine Blades".
PROJECT DESCRIPTION: A wind-tunnel experiment is conducted to determine the effects of sinusoidal leading-edge protuberances on NREL S823 airfoil to study the aerodynamic behaviour of the blade. The model consisted a baseline and a modified blade having chord length of 150mm and span length of 600mm. The test is conducted on the modified blade at a velocity of 10m/s, amplitude of 10% of chord and wavelength of 25% of chord at an angle of attack between α=0 ° to α=45 ° to plot graphs of Cl vs α, Cd vs α and Cl /Cd to determine the lift gain of the modified model with respect to the baseline model. A brief flow visualisation is also done along with simulations of both models.