| Home | Research | Departmental of Mechanical Engineering | University of Massachusetts Amherst |
I am a graduate student in Mechanical Engineering
at the University of Massachusetts Amherst, working primarily
in the area of Computational Fluid Dynamics. I work with
Prof. David P. Schmidt and
Prof. Jonathan P. Rothstein -
investigating the use of CFD techniques to study non-Newtonian droplet formation and behaviour.
Prior to this, I worked with Prof. Blair Perot
on the use of Graphics Processors for CFD.
On this page you will find descriptions of my research interests, updates on recent work, plus a few links to interesting web sites.
If you're looking for stuff related to OpenFOAM, click here.
The Lagrangian approach to interface tracking in Multi-phase flows
demonstrates several advantages over reconstruction techniques like
Level-Set methods and Volume-of-Fluids (VOF). The absence of interface
smearing and improved accuracy of surface tension calculations has led
to the success of Lagrangian methods, particularly at low Weber
numbers. However, owing to the strong deformations that are
characteristic of this technique, the quality of the underlying mesh
must be maintained to ensure accuracy throughout the duration of the
simulation process. This work incorporates modifications to
connectivity structures in situations where vertex motion is no longer
sufficient to account for large deformations, using a combination of
bisection, contraction and flipping operations to edges in the mesh.
Moreover, this approach is particularly attractive as it is applicable
to general cases involving dynamic meshes, like wing-flapping and
in-cylinder engine simulations.
High performance streaming processors have achieved the distinction of being very efficient and cost-effective in terms of floating-point capacity, thereby making them an attractive option for scientific algorithms that involve large arithmetic effort. Graphics Processing Units (GPUs) are an example of this new intiative to bring vector-processing to desktop computers; and with the advent of 32-bit floating-point capabilities, these architectures provide a versatile platform for the efficient implementation of such algorithms. To exemplify this, the implementation of a Conjugate Gradient iterative solver for PDE solutions on unstructured two- and three-dimensional grids using such hardware has been implemented. This would greatly benefit applications such as fluid-flow solvers which seek efficient methods to solve large sparse systems. The implementation has also been succesfully incorporated into an existing object-oriented CFD code, thereby enabling the option of using these architectures as efficient math co-processors in the computational framework. If you'd like to read the thesis, you can get it here.
S. Menon, and D. P. Schmidt, Conservative interpolation on unstructured polyhedral meshes: An extension of the supermesh approach to cell-centered finite-volume variables, Computer Methods in Applied Mechanics and Engineering, Accepted for publication. [Download]
K. Mooney, S. Menon, and D. P. Schmidt, A Computational Study of Viscoelastic Droplet Collisions, 21st Annual ILASS-Americas Conference, Cincinnati, Ohio USA, May 2010. [Download]
S. Menon, J. Rothstein and D. P. Schmidt, A Numerical Study of Axi-symmetric Droplet Formation Using A Moving Mesh Approach, ICLASS 2009, 11th Triennial International Annual Conference on Liquid Atomization and Spray Systems, Vail, Colorado USA, July 2009. [Download]
S. Menon, J. P. Rothstein, D. P. Schmidt, Z. Tukovic,
Simulating Non-Newtonian Droplet Formation With A Moving-Mesh Method,
21st Annual ILASS-Americas Conference, Orlando, Florida, May 18–21, 2008.
S. Menon and J. B. Perot, Implementation of an Efficient Conjugate Gradient Algorithm for Poisson Solutions on Graphics Processors, 15th Annual Conference of the CFD Society of Canada, Toronto, May 2007. [Download]
Most of my work these days has something to do with OpenFOAM, an open-source CFD library.
This is where I get to show-off. All work is done on OpenFOAM.
Norway: An Eclipse color theme that replicates the Norway Today scheme from Netbeans.
Reddit: My daily fix.
Calvin!: My all-time favourite.
PhD: The quintessential grad-school portrait.