Student Research Spotlight

Rituraj Profile Picture



Mechanical Engineering


Prof. Andrea Vacca

Research Title:

Numerical modeling of External Gear Machines

Research Description:

External gear machines (EGMs) are used in a wide range of applications from hydraulic machinery to fuel injection and fluid handling systems. In these systems, EGMs are one of the main sources of energy losses. To reduce these losses and develop energy efficient EGMs, numerical models are needed to be developed to analyze the performance of these units.

The goal of my research is to develop numerical models to simulate the operation of EGMs that accounts for key flow aspects like the nature of flow and geometric aspects like manufacturing errors. These models can be used in accurate analysis of the performance of EGMs as well as in developing novel designs optimized for high efficiency.


My research is heavily inclined towards numerical modeling and I use computational techniques day in and day out. So, I decided to join Computational Interdisciplinary Graduate Program to learn more about various computational methods and their applications in other disciplines to enrich my outlook.


  • Rituraj, and Andrea Vacca. "Modeling the Flow of Non-Newtonian Fluids Through Sharp Orifices." Journal of Fluids Engineering 140, no. 5 (2018): 054501.
  • Rituraj, and Andrea Vacca. "External gear pumps operating with non-Newtonian fluids: Modelling and experimental validation." Mechanical Systems and Signal Processing 106 (2018): 284-302.
  • Rituraj, Thomas Ransegnola, and Andrea Vacca. "An Investigation on the Leakage Flow and Instantaneous Tooth Space Pressure in External Gear Machines." In 2018 Global Fluid Power Society PhD Symposium (GFPS), pp. 1-8. IEEE, 2018.

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