Research Interests

[Research Statement]

• Computational fluid dynamics (CFD)

• Earth-system modelling; data-assimilation and subgrid-scale modelling of atmospheric processes

• Large-eddy simulations (LES) of rough and smooth wall turbulent boundary layers (incompressible, high Re flow)

• High performance computing, large scale data analysis

• System identification, structural response and structure-soil interactions during earthquakes

Publications

• Akshay Sridhar, Yassine Tissaoui, Simone Marras, Zhaoyi Shen, Charles Kawczynski, Simon Byrne, Kiran Pamnany, Maciej Waruszewski, Thomas H Gibson, Jeremy E Kozdon, Valentin Churavy, Lucas C Wilcox, Francis X Giraldo, Tapio Schneider (2022) Large-eddy simulations with ClimateMachine v0.2.0: a new open-source code for atmospheric simulations on GPUs and CPUs, Geoscientific Model Development, 15, 6259-6284 . [Link]

• Z Shen, A Sridhar, Z Tan, A Jaruga, T Schneider (2021) A Library of Large-eddy Simulations for Calibrating Cloud Parameterizations. (JAMES) [Link]

• Sridhar, A. & Pullin, D. I. (2018) LES of turbulent boundary layer flows with smooth-rough and rough-smooth wall boundary transitions (In preparation for PRF)

• Sridhar, A., Pullin, D. I., & Cheng, W. (2017). Rough-wall turbulent boundary layers with constant skin friction. Journal of Fluid Mechanics, 818, 26-45. [Link]

• Kuang, A., Sridhar, A., Garven, J., Gutschmidt, S., Rodgers, G. W., Chase, J. G., ... & MacRae, G. A. (2015). Christchurch Women’s Hospital: Performance Analysis of the Base-Isolation System during the Series of Canterbury Earthquakes 2011–2012. Journal of Performance of Constructed Facilities, 30(4), 04015096. [Link]

• Sridhar, A., Kuang, A., Garven, J., Gutschmidt, S., Chase, J. G., Gavin, H. P., ... & MacRae, G. A. (2014). Christchurch Women's Hospital: Analysis of Measured Earthquake Data during the 2011–2012 Christchurch Earthquakes. Earthquake spectra, 30(1), 383-400. [Link]

• Gavin, H, Sridhar, A, Rodgers, GW, MacRae, GA, Chase, JG, Coar, M, Harvey, P, Nigbor, R, Farrel, R and Gutschmidt, S (2013). "Seismically-Isolated Christchurch Women's Hospital (NZ) Aftershock Monitoring 2011-09-14 - 2012-06-25", Network for Earthquake Engineering Simulation, (data=463 files), doi: 10.4231/D3901ZF92. [Curated Dataset]

Conference Presentations/ Papers / Posters

• Zhaoyi Shen, Akshay Sridhar, Zhihong Tan, Anna Jaruga and Tapio Schneider. A library of large-eddy simulations for calibrating cloud parameterizations (AGU 2021) [Link]

• Ben Mackay, Lenka Novak, Christopher N Hill, Simon Byrne, Valeria Barra, Oswald Knoth, Katherine Deck, Akshay Sridhar, Gregory LeClaire Wagner, Michael Howland and Tapio Schneider. Coupling Different Hierarchies of Climate Models with the CliMA Coupler (AGU 2021) [Link]

• A. Sridhar, Z. Shen, Y. Tissaoui, S Marras, L Wilcox, J.E. Kozdon, M. Waruszewski, T. H. Gibson, C. Kawczynski, K. Pamnany, S. Byrne, F. X. Giraldo, T. Schneider. Study of Turbulence Closures in Atmospheric Flows with Discontinuous-Galerkin Numerics in ClimateMachine.jl (SIAM GS21)

• Y. Tissaoui, A. Sridhar, Y. Cohen, S. Guimond, C. Kawczynski, A. Jaruga, S. Byrne, L. Wilcox, J. Kozdon, F. X. Giraldo, S. Marras, T. Schneider. Impact of nonlinear effects and asymmetric dynamics on tropical cyclone intensification. (34th Conference on Hurricanes and Tropical Meteorology)

• A. Sridhar, Y. Tissaoui, Z. Shen, S Marras, C. Kawczynski, M. Waruszewski, T. H. Gibson, J. E. Kozdon, V. Churavy, L. Wilcox , F. X. Giraldo, T. Schneider. GCM-Driven-LES in a Julia-GPU Framework. (SIAM CSE21)

• Sridhar, A., Pullin, D. I. Large-eddy simulation of turbulent boundary-layer flow through a rough-smooth wall-surface transition. In APS Meeting Abstracts. (APS DFD 2017). [Link]

• Sridhar, A., Pullin, D. I., & Cheng, W. Modeling and large-eddy simulation (LES) of a turbulent boundary layer over linearly-varying surface roughness. In APS Meeting Abstracts. (APS DFD 2016). [Link]

• Various topics: GALCIT Fluid Mechanics Research Conference (Department Seminars,2016,2017,2018)

• Sridhar A., McVicar J. and Gutschmidt S. Group dynamics of a building cluster: A nonlinear model. Seoul, South Korea: International Conference on Geomechanics and Engineering (ICGE 2012) (Presented by Gutschmidt, S). [Link]

Teaching

• The Ernest E. Sechler Memorial Award in Aeronautics, 2018 (Teaching and Research contributions, BASE11/AMP program)

• BASE11/ Caltech Aerospace Mentorship Program (Jan-Jun 2018), Lead Mentor

• AE101 (2015-18): Fluid Mechanics, 7 terms (Teaching Assistant)

• AE232 (2017): Computational Fluid Dynamics, 1 term (Teaching Assistant)

• Project mentor, John Muir High School (Spring 2017)

Extra-Curricular

• Invited panelist (academic support), Whitney Workshop for Summer Undergraduate Research Fellows (2018)

• Caltech International Offices Orientation Leader (Summer 2014-2018)

• Graduate Student Council: Orientation panelist (academic support), 2015

• Catalina Community Associate (Caltech Graduate Housing volunteer team, 2013-2016)

• Student Volunteer Army member, post-earthquake manual labour and support (2010,2011)

• University of Canterbury Hockey Club Funding Officer (2009-2012)