
Shankar Subramaniam
Title(s):
Professor Emeritus
Mechanical Engineering
Office
305 Lab of Mechanics
2519 Union Dr.
Ames, IA 50011
Information
Education
- PhD, Aerospace Engineering, Cornell University, 1997
- MS, Aerospace Engineering, University of Notre Dame, 1990
- BTech, Aeronautical Engineering, Indian Institutes of Technology-Bombay, 1988
Interest Areas
- Spray modeling
- Modeling and simulation of gas-particle flows, granular flows
- Combustion
- Turbulent reactive flows
- Mixing
- Stochastic models, particle methods
- Computational fluid dynamics
Research
Dr. Subramaniam’s areas of expertise are in theory, modeling and simulation of multiphase flows (including gas-solid flows, particle-laden flows, sprays, colloids and granular mixtures), turbulence, mixing, and reacting flows. His current research concerns direct numerical simulation of gas-solid flows, hierarchical coarse-graining approaches, and mesoscale models of colloidal aggregation. Application areas include riverbank water filtration, fluidized bed processes including chemical looping combustion and CO2 capture using dry sorbents.
- Development of a two-fluid drag law for clustered particles using particle-resolved direct numerical simulation for CO2 capture in fluidized beds
- Heat and mass transfer in gas-solid flows and circulating fluidized beds with application to CO2 capture
- Stability of particle-laden suspensions
- Modeling of cementitious pastes as a suspension using particle-resolved DNS and Discrete Element Method simulation of adhesive particles
- Simulation of rapid and quasi-static granular flows using Discrete Element Method, and modeling using advanced continuum theories
- Particle filtration in moving bed granular filters for biomass energy conversion
Publications
- Eric Murphy and Shankar Subramaniam, “Binary collision outcomes for inelastic soft-sphere models with cohesion,” Powder Technology (2017), v. 305, pp. 462-476
- Mohammad Mehrabadi, Sudheer Tenneti, and Shankar Subramaniam, “Importance of the fluid-particle drag model in predicting segregation in bidisperse gas-solid flow,” International Journal of Multiphase Flow (2016), v. 86, pp. 99–114
- V. Vidyapati and S. Subramaniam, “A Constitutive Model for Dense Granular Flows Based on Microstructural Descriptors,” Industrial and Engineering Chemistry Research (2016), v. 55, pp. 10178-10190
- S. Tenneti, M. Mehrabadi, and S. Subramaniam, “Stochastic Lagrangian model for hydrodynamic acceleration of inertial particles in gas-solid suspensions,” Journal of Fluid Mechanics (2016), vol. 788, pp. 695–729
- B. Sun, S. Tenneti, S. Subramaniam and D. L. Koch, “Pseudo-turbulent heat flux and average gas–phase conduction in gas–solid heat transfer: flow past random fixed particle assemblies,” Journal of Fluid Mechanics (2016), vol. 798, pp. 299–349
- Mohammad Mehrabadi, Eric Murphy, and Shankar Subramaniam, “Development of a gas–solid drag law for clustered particles using particle-resolved direct numerical simulation,” Chemical Engineering Science (2016), v. 152, pp. 199–212
- S. Tenneti and S. Subramaniam, “Particle-resolved direct numerical simulation for gas-solid flow model development,” Annual Review of Fluid Mechanics, 46, 199-230 (2014)
- S. Subramaniam, “Lagrangian-Eulerian methods for multiphase flows,” Progress in Energy and Combustion Science, 39, 215-245 (2013)
Journal Publications
36. Mehrabadi. M., Tenneti. S., and Subramaniam, S Gas-phase velocity fluctuations in statistically homogeneous fixed particle beds and freely evolving suspensions using particle-resolved direct numerical simulation. International Journal of Multiphase Flow (submitted)
35. Tenneti. S., Sun, B., Garg. R., and Subramaniam, S. Role of fluid heating in dense gas-solid flow as revealed by particle-resolved direct numerical simulation, International Journal of Heat and Mass Transfer
34. Markutsya. S., Fox, R. O., and Subramaniam, S., Coarse-graining approach to infer mesoscale interaction potentials from atomistic interactions for aggregating systems, Industrial Environmental Chemistry and Research (submitted)
33. Tenneti. S., Pai, M. G., Garg. R., and Subramaniam, S., Gas-phase velocity fluctuations in statistically homogeneous fixed particle assemblies from direct numerical simulation, International Journal of Multiphase Flow (submitted)
32. Subramaniam. S., Pai, M. G., Garg. R., and Tenneti, S., Fluctuations, hydrodynamics and scale separation in gas–solid flows, Physical Review E (in review)
31. Garzo, V., Tenneti, S., Subramaniam, S., and Hrenya, C. M., Enskog kinetic theory for monodisperse gas-solid flows, Journal of fluid mechanics (in revision)
30. Subramaniam, S., Lagrangian-Eulerian Methods for Multiphase Flows, Prog. Energy Combust. Sci.
29. Madhusudan G. Pai and Shankar Subramaniam, Two-way coupled stochastic model for dispersion of inertial particles in turbulence. Journal of Fluid Mechanics, Available on CJO doi:10.1017/jfm.2012.89
28. Vidyapati and Subramaniam, S. Granular rheology and phase transition: DEM simulations and order-parameter based constitutive model, Chemical Engineering Science, Vol. 72, pp. 20-34, 2012.
27. Vidyapati, Langroudi, M. K., Sun, J., Sundaresan, S., Tardos, G. I. and Subramaniam, S. Experimental and computational studies of dense granular flow: Transition from quasi-static to intermediate regime in a Couette shear device, Powder Technology, Vol. 220, pp.7-14, 201
26. G. Lomboy, S. Sundararajan, K. Wang, S. Subramaniam, A test method for determining adhesion forces and Hamaker constants of cementitious materials using atomic force microscopy, Cement And Concrete Research, Volume: 41 Issue: 11 Pages: 1157-1166, Nov 2011
25. S. Tenneti, R. Garg, and S. Subramaniam, Drag law for monodisperse gas-solid systems using particle-resolved direct numerical simulation of flow past fixed assemblies of spheres, International Journal of Multiphase Flow, Nov. 2011, Vol. 37(9),p.1072(21)
24. Qin, Z., Fox, R. O., Subramaniam, S., Pletcher, R. H., and Zhang L., On the apparent particle dispersion in granular media, Advanced Powder Technology, Volume 22, Issue 6, November 2011
2010
23. Ying, X. and Subramaniam, S., Effect of Particle Clusters on Carrier Flow Turbulence: A Direct Numerical Simulation Study, Flow Turbulence Combust. 85:735–761 DOI 10.1007/s10494-010-9298-8 (2010)
22. Tenneti , S. , Garg, R. , Hrenya, C. M., Fox, R. O., and Subramaniam, S., Direct numerical simulation of gas-solid suspensions at moderate Reynolds number: quantifying the coupling between hydrodynamic forces and particle velocity fluctuations, Powder Technology , 203, p. 57-69 (2010)
21. Passalacqua, A., Fox, R. O., Garg, R. and Subramaniam, S. A fully coupled quadrature-based moment method for dilute to moderately dilute fluid–particle flows, Chemical Engineering Science, 65(7) Special Issue: Sp. Iss. SI, p. 2267-2283 (2010)
2009
20. M. G. Pai and S. Subramaniam, A comprehensive probability density function formalism for multiphase flows, Journal of Fluid Mechanics, 628, p. 181-228 (2009)
19. R. Garg, C. Narayanan and S. Subramaniam, A numerically convergent Lagrangian–Eulerian simulation method for dispersed two-phase flows, International Journal of Multiphase Flow, 35 (4), p. 376-388 (2009)
18. S. Markutsya , S. Subramaniam, R. D. Vigil and R. O. Fox, On Brownian Dynamics simulation of nanoparticle aggregation, Industrial and Engineering Chemistry Research, 2008, 47, 3338-3345
2007
17. R. Garg, C. Narayanan, D. Lakehal and S. Subramaniam, Accurate Numerical Estimation of Interphase Momentum Transfer in Lagrangian-Eulerian Simulations of Dispersed Two-Phase Flows, International Journal of Multiphase Flow, 33 (12), 1337-1364, (2007)
16. Sun, J., Battaglia, F. and Subramaniam, S. Hybrid Two-Fluid DEM Simulation of Gas-Solid Fluidized Beds, ASME Journal of Fluids Engineering, 129 (11), 1394-1403, (2007)
15. Y. Xu and S. Subramaniam, Consistent Modeling of Interphase Turbulent Kinetic Energy Transfer in Particle-Laden Turbulent Flows, Physics of Fluids, 19 (8), 085101, (2007)
14. G. M. Pai and S. Subramaniam, Modeling Droplet Dispersion and Interphase Turbulent Kinetic Energy Transfer Using a New Dual-Timescale Langevin Model, International Journal of Multiphase Flow, 33(3): 252-281 (2007)
2006
13. Sun, J., Battaglia, F. and Subramaniam, S. Dynamics and Structures of Segregation in a Dense, Vibrating Granular Bed, Physical Review E, 74(6):061307–13, (2006)
12. G. M. Pai and S. Subramaniam, Modeling Interphase Turbulent Kinetic Energy Transfer In Lagrangian-Eulerian Spray Computations, Atomization and Sprays, 16 (7): 807-826 (2006)
11. Y. Xu and S. Subramaniam, A Multiscale Model for Dilute Turbulent Gas–particle Flows based on the Equilibration of Energy Concept, Physics of Fluids, 18 (3), 033301, (2006)
10. D. Gao, S. Subramaniam, R. O. Fox, G. S. Grest and D. K. Hoffman, Momentum Transfer between Polydisperse Particles in Granular Flow, ASME Journal of Fluids Engineering, 128 (1), pp. 62-68, (2006)
9. G. M. Pai and S. Subramaniam, Accurate Numerical Solution of the Spray Equation using Particle Methods, Atomization and Sprays 16 (2): 159-194 (2006)
2005-2000
8. D. Gao , S. Subramaniam, R. O. Fox and D. K. Hoffman, Objective Decomposition of the Stress Tensor in Granular Flows, Physical Review E, 71, 021302, (2005)
7. S. Subramaniam, Statistical Modeling of Sprays using the Droplet Distribution Function Approach, Physics of Fluids, vol. 13 (3), p. 624-642 (2001)
6. S. Subramaniam, Statistical Representation of a Spray as a Point Process, Physics of Fluids, vol. 12 (10), p. 2413-2431 (2000)
5. S. Subramaniam and D. C. Haworth, Development of a Hybrid Finite-Volume/PDFMonte Carlo Method on Unstructured Three-Dimensional Deforming Meshes for Stratified Charge Engine Simulation, International Journal of Engine Research, v. 1(2), p. 171-190 (2000)
1999-1996
4. S. Subramaniam, Minimum Error Fickian Diffusion Coefficients for Mass Diffusion in Multicomponent Gas Mixtures, Journal of Non-equilibrium Thermodynamics, v. 24(1) p. 1-39 (1999)
3. S. Subramaniam and S. B. Pope, Comparison of Mixing Model Performance for Nonpremixed Turbulent Reactive Flow, Combustion & Flame, v. 117(4) pp. 732-754 (1999)
2. S. Subramaniam and S. B. Pope, A Mixing Model for Turbulent Reactive Flows based on Euclidean Minimum Spanning Trees, Combustion and Flame, v. 115(4) pp. 487-514 (1998)
1. A. R. Masri, S. Subramaniam and S. B. Pope, A Mixing Model to Improve the PDF Simulation of Turbulent Piloted Flames, Twenty-sixth Symposium (International) on Symposium, v. 1, pp. 49-57, (1996)
Book Chapters
Garg, R., Tenneti, S., Mohd-Yusof, J., Subramaniam, S., 2011. Direct numerical simulation of gas–solids flow based on the immersed boundary method. In: Pannala, S., Syamlal, M., O’Brien, T.J. (Eds.), Computational Gas–Solids Flows and Reacting Systems: Theory, Methods and Practice. IGI Global, pp. 245–276
PDF files of selected publications are available for download from http://works.bepress.com/shankar_subramaniam/
Primary Strategic Research Area
Energy Systems