Ing. Dharit Parikh

In the rotating machinery department, the mission of our team was to make a technical and economic study of a pump, turbine and compressor system; To view the suppliers' offer for Ethane cracking unit.  Technical analysis of Pump and compressor  Specifications and datasheet of the rotating equipment.  Review of supplier offers  Participation in clarification meetings.

Hydrogen is widely used fuel in rocket engine because of its high specific impulse. During the combustion there are many intermediate species and some of them have significance impact on the combustion process. Development of the kinetic mechanism includes this crucial species in order to predict accurate results. -Non premixed flame calculations are performed at different initial rocket combustion conditions. -Effect of strain rate and initial pressure on flame thickness and extinction .

Auto ignition is a phenomenon of great fundamental and practical interest. HCCI engines are very efficient so far and NOx emissions are less which satisfy the future euro standards for automotive industry. -Simulations were performed using cantera to understand the behavior of different parameters (fuel temperature, initial pressure, equivalence ratio etc.) on ignition delay . -2D DNS were carried out to visualize the flame fronts and first ignition sites in the domain.

Turbo charging is an important technology to boost the engine power.The main problem using turbocharger is the turbo lag which can be overcome by using variable geometry turbine. - Modelling of the turbine was done using Catia software. - Aerodynamic performance enhancement by considering the airfoil shape of the stator blades. - Flow analysis of the turbine in Ansys software. - Performance investigation for variety of flow conditions and different stator angles

Heat transfer inside pipe is the most commonly studied subject with wide industrial application. This project is the integrated application of numerical methods and heat transfer. -Code was developed using FORTRAN 90 for Heat transfer in 2-D pipe. -Temperature profiles were plotted for different section of pipe for specific initial condition to understand the flow behavior and the effect of boundary layer.

ATREX engine(Air Turbo Ramjet Engine with eXpander cycle) is a hybrid experimental engine which works as a turbojet engine at low speeds and Ramjet at high speed. -Detailed design estimations are performed ( Number of engines,cooling system for compressor and nozzle at high mach number etc). -Thermodynamic and Performance calculations of ATREX engine for different Flight altitude. -Reliability of engine for different altitude and mach number.

Turbulence combustion is an important subject to understand since it has high significance specially in automotive industry. -Modelling is performed using GMSH. -RANS analysis are performed using CODE_SATURNE by varying different factors and behavior of the V flame is observed in the domain.

Cavities are crucial part of a scramjet engine which plays the role of flame holder to prevent the flame from extinction. -2D combustion chamber geometry with cavity is modelled using GMSH. -Large eddy simulations are conducted using CREAM solver. -Pressure probes are implanted at different locations to record the pressure and acoustic signal graphs are plotted using Fast fourier transformation(FFT).

Combustion Turbulence Turbulence heat exchange Turbomachinery Gas dynamics Fluid mechanics Two phase combustion Atomization Numerical methods Radiation in semi-transparent environment Thermal science Propulsion Flight mechanics

Computational Fluid Dynamics Space dynamics Rocket propulsion Aerodynamics Viscous and Boundary layer theory Turbomachinery Conventional power engineering Flight mechanics Jet propulsion Theory of heat transfer Thermodynamics Helicopter Engineering Fluid dynamics Aircraft design