Welcome to the page of
Bidur Bohara
Email  : bbohar1 [at] tigers [.] lsu [.] edu
Phone : (832) 628 7772
About Me
I am a graduate student currently pursuing Ph.D. degree in Computer Science at Louisiana State University, Baton Rouge. I am presently working in the Visualization Lab as a research assistant under Dr. Bijaya B. Karki.
I study scientific and information visualization; computer graphics and image processing also interests me. In my  free time, I enjoy playing soccer and kayaking on the bayou.
Please find my Resume here.
Research

My current project involves the development of visualization application (AtomViz) to address the rendering and analysis needs of molecular dynamics data generated from First Principles simulations. I focus on the study and implementation of tools for dynamical and structural analysis of atomic system in AtomViz, an in-house project here in Louisiana State University. Figures below show a screen shot of atomic system rendered in AtomViz for the detailed visualization-based analysis of atomic position-time series data.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In my previous project, I contributed in the  visualization of pathlines and time-surfaces in large, curvilinear, multi-block data sets of fluid dynamics using the visualization framework Vish. A key challenge is the ability to easily mine the time dependent computational fluid dynamics data; extract key features of the flow field; display these spatially evolving features in the space-time domain of interest. The implementation of time surfaces, such as an evolving surface of a sphere (shown below in figures), for analyzing the flow field is more relevant in context of a stirred tank system.

Publications
Talks

Clutter reduction in rendering of particle (atom) trajectories with adaptive position merging.

Bohara B. and Karki B.B. (2014). International Conf. on Computer Graphics Theory and Applications (GRAPP'14), 265-271.

 

Practical parallel rendering of detailed neuron simulations.

Hernando J., Biddiscombe J., Bohara B., Eilemann S., Schurmann F. (2013). EGPGV’13 Proceedings of the 13th Eurographics Symposium on Parallel Graphics and Visualization, 49-56.

 

Visualizing microscopic structure of simulated model basalt melt.

Bohara B. and Karki B.B. (2013). Computers & Geosciences, 2013, 57: 166-174.

 

Rendering particle trajectories with color-coded information for atomistic visualization.

Bohara B. and Karki B.B. (2012). In 12th IASTED International Conf. on Visualization, Imaging, and Image Processing (VIIP’12), 782-049: 35-42.

 

First-principles study of diffusion and viscosity of anorthite (CaAl2Si2O8) liquid at high pressure.

Karki B. B., Bohara B., Stixrude L. (2011). American Mineralogist, 2011, 96: 744-751.

 

A Framework for Computing Integral Geometries in VISH using Template Meta Programming.

Ritter M., Bohara B., Benger W. (2010). 6th High-End Visualization Workshop, 2010, Obergurgl. Austria. (pdf)

 

Time-Curvature and Time-Torsion of Virtual Bubbles as Fluid Mixing Indicators.

Bohara B., Benger W., Ritter M., Roy S., Brener N., Acharya S. (2010). IADIS Computer Graphics, Visualization, Computer Vision and Image Processing 2010 (CGVCVIP 2010). Freiburg. Germany. (pdf)

 

Evolving Time Surfaces in a Virtual Stirred Tank.

Bohara B., Harhad F., Benger W., Brener N., Iyengar S., Ritter M., Liu K., Ullmer B., Shetty N., Natesan V., Cruz-Neira C., Acharya S., Roy S., Karki B. (2010). 18th International Conference on Computer Graphics, Visualization and Computer Vision 2010. WSCG Proceedings. Plzen. Czech Republic.

and Journal of WSCG 18: 1-3. 121-128. (pdf)

 

Visualization of Pathlines in Computational Fluid Dynamics Simulations.

Bohara B., Roy S., Ritter M., Nathan B., Iyengar S., Acharya S., Benger W. (2009). In NSF EPSCoR RII Abstract and Poster, Louisiana State University, 2009.

First-Principles Simulation and Visualization of Model Basalt Melt Structure (pdf)

At the AGU Fall Meeting 2011, San Francisco, California, USA. December, 2011.

 

Time Curvature and Time Torsion of Virtual Bubbles as Fluid Mixing Indications (pdf)

At the IADIS CGVCVIP 2010, Freiburg, Germany. July 2010.

 

Evolving Time Surfaces in a Virtual Stirred Tank (pdf)

At the WSCG 2010, Plzen, Czech Republic. February 2010.

 

Visualization of Pathlines and Time Surfaces in Computational Fluid Dynamics Simulations

At the Louisiana EPSCoR RII 2010 Symposium, Baton Rouge, LA, USA. August 2010.

Last Modified on May 02, 2014

Bidur Bohara, Baton Rouge, Louisiana, USA

Visualizing a model basalt melt at 2200K (left), and 3000K (right). The Si/Al-O polyhedra and Ca/Mg-O spheres encode the respective coordination environment information with respect to oxygen. Also rendered are the trajectories (time encoded from green to red) of Ca and Mg atoms.

 

Evolution of two spheres at time slices 0, 50, 100, 125 and 150, respectively from left-top to bottom, as seen top-view of the stirred tank. First image shows the seed spheres, and the last image shows two spheres just before the surfaces are about to mix. The integration of surfaces over time generates and evolving surface that can illustrate key flow characteristics such as how matter injected in a stirred tank disperses, and in what regions of the tank is the turbulence high.