​Flow Measurement Techniques
Laboratory Exercise:PIV and HWA​
• Conducted experiments to analyze the flow field around an airfoil using Hot wire anemometry(HWA) and Particle Image Velocimetry(PIV)
• Developed a code to perform the cross-correlation of PIV images
• Analysed the velocity profiles obtained by HWA and PIV to compare the added value of HWA w.r.t. PIV(and vice versa)​

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​Experimental Simulations 
Corrections in Windtunnel Measurements

A wind tunnel test on a Fokker F-27 scale model in gliding and powered flight condition was conducted. The obtained data was corrected to account for solid blockage, wake blockage, lift interference and propeller slipstream. The corrected values were plotted along with raw data as lift, drag and pitching moment curves. Some interesting phenomenons like the waviness of pitching moment curve, slight increase in lift after separation on wing and increase in lift due to propeller slipstream were observed. An attempt was made to
explain these phenomenons based on the understanding of flow physics. The results provided a good insight in the behaviour of Fokker F-27 with various congurations.


Rotor Aerodynamics
Modelling an Rotor using a BEM model and a Lifting-line vortex model​

Modelled the geometries and operation modes of the Rotor using a horseshoe vortex filament model, with a fixed wake and Blade Element Method with Prandtl tip correction model and the Glauert correction.



Computational Fluid Dynamics I

The 2 dimensional lid-driven cavity flow

The steady lid-driven cavity flow is a well-known test problem. The problem was analyzed using finite volume method in a two dimensional domain . The results were compared with those obtained by Botella and Peyret for various meshes.





Computational Fluid Dynamics II                                                    

​Data Assimilation Bayesian Inference for an Inverse Poisson Problem                                    
• Applied the 1d Poisson solver provided for a known dissipation coefficient.
• Using Bayesian probability, derive an optimization problem for the MAP (maximum a posteriori) estimator of the dissipation coefficient.
• Solved the optimization problem using a gradient based optimizer.

 Summer Project: Experimental Analysis of Premixed Combustion

• Collected and analyzed gaseous emission and temperature readings for premixed combustion of LPG to study the effect of a porous combustor on combustion.

• Decrease in emission and increase in efficiency were observed with the porous combustor which can be used to improve efficiency of internal combustion engines.

 

 Term Paper: Analysis of Turbulent Wake Behind a Flapping Wing

• Collected velocity data behind a flapping wing using Particle Image Velocimetry.

• Analyzed the data to calculate the momentum loss behind the flapping wing in order to estimate the drag force on the flapping wing.

 Term Paper: Shock Capturing Methods

• Examined and studied various computational methods being used for capturing shocks as a part of ‘Finite Element Methods for fluid dynamics’ course, provided a detailed report and gave presentation to the class for the same.

Course Project: Design of a Subsonic Jet Trainer aircraft

• Developed a conceptual design for Trainer Aircraft for a Jet Fighter for a given mission profile as a part of aircraft design course.
•  A comprehensive parameter trade off study was undertaken and successfully implemented for various flight phases.



Term Paper: Trajectory simulation for a bi-elliptic orbit

• Developed a Matlab code for simulating the trajectory of a space vehicle in a Bi-elliptic orbit transfer for maneuvering from one circular orbit to another.
•  Implemented the dynamics of an orbital space-shuttle and vehicle rendezvous.