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Master Thesis: Investigation of Blunt trailing edge acoustics by TR-TOMO PIV

Supervisor: Prof. Fulvio Scarano

 

More information about the project can be found at 

http://studenten.tudelft.nl/en/students/faculty-specific/ae/agenda/event/detail/colloquium-a-gupta/

Internship: Analysis of an axisymmetric jet using spectral methods

Supervisors: Pr. Laurent Joly



 



Projects and Internships

 

Internship: Design of Aircraft Joints


An overview of design of brackets and fittings used in aircraft was presented. Emphasis had been given to design aspect such as finding dimension of fittings or estimating the number of attachment rivets required. The various types of failure that might take place in joints are described and compared. Several problems related to brackets and fittings design were analyzed.
Finally, two complex problems related to aircraft design; pilot step design and aileron support design have been discussed and solved. Following are some design drawings made during the internship.



Internship: Development of FanZ (Software for Design of Cooling Tower Fans)       

• Contrived new feature to FanZ which will help the user to select his own airfoil for the blade design.
• Identified and removed a technical bug from Fanz which was giving erroneous results earlier.
• Developed and compiled user manual for the software using Latex.

 Bachelor Thesis: Analysis of the two-phase flow 

The final assignment of my bachelor’s programme was "Experimental analysis of a supersonic atomizer". The work primarily included collection and analysis velocity and diameter distribution across the spray. The objective of the study was to validate the design of the atomizer and analyze the correlations between droplet size and velocities, overall droplet size distribution across the spray and develop new empirical relations.  Experiment was conducted in a specially designed facility at propulsion lab. Phase Doppler particle analyzer is used for the measurement of velocities and droplet diameter. The test liquid primarily used is water.







Measurements in the spray near field showed that the liquid flow rate was concentrated in a small region.The smallest droplets were transported to the spray core while larger droplets distribution was observed along the periphery of the spray. The D32 profiles show a progressive growing in radial direction something that is typical of hollow cone sprays. The significant axial growth of the D32 values is a consequence of the droplet collision–coalescence phenomena that occur along the spray. The coalescing collisions caused coarser and wider overall droplet size distributions.





















 

Besides, the success and failures that have arisen in the project, a valuable knowledge that I now possess is a good understanding of how research is pursued from hypothesis building, designing suitable experiments and following it up with troubleshooting and optimizing the experiments. 

 

 


Entrepreneurship Project (Design Challenge)

TAHMO (Trans-African Hydro Meteorological Observatory) Project    

 

The aim of this project is to develop and design reliable, robust, cost effective ($300) and modular weather stations for the African continent. These weather stations fulfill the African need of ground truth weather data which can be used for e.g. weather forecasts; weather index insurance and data on natural disasters and climate change. TAHMO stands for Trans-African Hydro-Meteorological Observatory and is from the start meant to be sustainable, to provide long term weather data about the African continent. This business plan provides a coherent analysis of the business models, market, design, operations and finances. Three business models are developed, one per specific phase, to be able to adjust the project fully to the needs on that phase. For the development of the sensors a crowdsourcing project plan is written, this enables low cost rapid development of the required sensors, but this process needs high involvement from all stakeholders. From the market analysis there can be concluded that the innovation system is to a large extend interlinked and the project is depended on tens of key stakeholders, making stakeholder management a key task for the TAHMO team. Based on the SWOT, 4P, five forces and STEEPLED analysis the project has high potentials but also high threats. Again the environment is important to manage well. The design and implementation plan suggests a design for the TAHMO meeting all sustainable requirements for rural African countries and providing blueprints for production of prototypes as shown below

The operational plan focuses on the key steps needed per phase to make the project successful, in the first phase process management techniques are required, gradually evolving in a more project management style when the project develops and becomes more structured. Revenues are made using the freemium business model in phase 3, the last phase of the project. For this phase three scenarios (A, B and C) are developed which differ on number of TAHMOs build and revenues. The weather data is essentially freely available, but if customers require added value or high volumes of data a premium is required, only 7% of the total customers will be a premium customer. The financial analysis makes clear that scenario A (implementing 20.000 TAHMOs) and scenario B (implementing 10.000 TAHMOs) are both financially viable, with a positive NPV. There can be concluded that the possibility of scaling up in phase 3 is essential for the sustainable future of the TAHMO project.The project was awarded as the winner of the Design Challenge. 

More info about the project can be found at http://tahmo.org/

 Youth Business Development competition

• Conducted detailed study of the E-waste supply, generation and recycling in India from business perspective.

  • Qualified in the top 40 teams globally in YBD competition for Business Plan on E-waste supply management organised by Said Business School, University of Oxford.

Teaching Assistant for Dynamics(AE1203)
• Served as a mentor giving personal attention to a group of students solving problems in studio classroom as a part of the course dynamics.
• Graded exam papers and proctored during the examinations

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