Deepak R Tunuguntla

PostDoc @ University of Twente

Welcome

Since 2015, I am a post doctoral researcher in the Department of Thermal and Fluid Engineering at the University of Twente, The Netherlands.

From the year 2011 to 2015, I was a joint PhD student in the Mathematics of Computational Science (MACS) group of Prof. J.J.W. van der Vegt and the Multi-Scale Mechanics (MSM) group of Prof. S. Luding at the University of Twente. I am a regular reviewer of journals such as Granular Matter and Computational Particle Mechanics. Besides reviewing, I am also a member of the J.M. Burgerscentrum Research School for Fluid Mechanics (JMBC), Graduate School of Engineering Mechanics (EM) and the American Physical Society (APS).

Multi-Scale Research Interests


Currently, my research focuses on the modelling of complex granular phenomena via developing novel numerical methods and utilising state-of-the-art experimental calibration and validation techniques.

Modelling granular systems is a multi-scale (multi-step) challenge requiring a blend of both experiments and simulations. Thereby, figure below illustrates a state-of-the-art framework showcasing such a blend.

Adapted from Thornton et al. (Comput. Meth. Mat. Sci., 2012) and my recent review contribution involving high performance computing and experimental validation of particle simulations (Comp. Part. Mech., 2016).

Given this multi-scale nature of modelling granular materials, in the last years, I have gained immense knowledge relating to each step illustrated in the above framework. Hence, allowing me to deepen my understanding and, more importantly, make a few valuable contributions to the granular community.

Besides focusing on enriching the simulation methods for effectively predicting the granular phenomena, I have also  indulged myself into the world of developing/utilising open-source easy-to-use simulation packages. Since 2013, I am a co-developer of a highly regarded open-source software suite, MercuryDPM – A fast, flexible and accurate particle solver. On the other hand, I also regularly utilise open-source continuum finite element method packages such as oomph-lib and hpGEM.

Past and Current Topics


  • Dense Granular Flows
    • Modelling geophysical flows over inclined channels.
    • Theoretical, experimental and numerical investigation of particle segregation mechanisms in inclined channel and rotating drum setups.
  • Micro-Macro Methods (MMM)
    • Coarse Graining (CG): An accurate mapping technique for discrete particles to continuum fields.
  • Multi-phase Flows
    • Coupled particle and fluid solver

News


In March 2018, MercuryLab will offer once again its popular courses on C++ programming and Discrete Particle Simulations. More information can be found here.


In September 2017, I have started working on modelling agglomeration processes (tabletting and selective laser sintering) of particulate materials. The agglomeratrion project will again utilise a multi-scale approach.

 


MercuryDPM is available here. New features: More complex shapes and Lees-Edwards boundaries; reorganisation of the file structure; and a better build system (cmake). Have fun with it, and, as always, give us your feedback!