### Google Scholar

**Book Chapters**

- R. Ranjan, A. Panchal, S. Karpe, and S. Menon, “Machine Learning Strategy for Subgrid Modeling of Turbulent Combustion Using Linear Eddy Mixing Based Tabulation“, in Machine Learning and Its Application to Reacting Flows, Springer, Cham, N. Swaminathan and A. Parente (Editors), 2023.
- S. Menon, R. Ranjan, Oefelein, J. C, “Reacting LES@2030: near diskless and near real-time computing for design?”, in Whither Turbulence and Big Data in the 21st Century, Springer, A. Pollard, L. Castillo, L. Danaila and M. Glauser (Editors), 2017.
- S. Menon, and R. Ranjan, “Spray combustion in swirling flow”, in Coarse Grained Simulation and Turbulent Mixing, Cambridge University Press, F. Grinstein (Editor), 2016.

**Journal Publications**

*R. Ranjan, and S. Menon*, “**Two level simulation of Schmidt number effect on passive scalar transport in wall-bounded turbulent flows**“, Physics of Fluids 33 (3), 035124, 2021.*R. Ranjan, M. Venkataswamy, and S. Menon*, “**Dynamic one-equation-based subgrid model for large-eddy simulation of stratified turbulent flows**“, Physical Review Fluids, 5 (6), 064601, 2020.*B. Ochs, R. Ranjan, D. Ranjan, and S. Menon*, “**Topology and flame speeds of turbulent premixed flame kernels in supersonic flows**“, Combustion and Flame, 210, 83-99, 2019.*Y. Wei, R. Ranjan, U. Roy, J. H. shin, S. Menon, and M. Zhou*, “**Integrated Lagrangian and Eulerian 3D microstructure-explicit simulations for predicting macroscopic probabilistic SDT thresholds of energetic materials**“, Computational Mechanics, 64, 547-561, 2019.*A. Panchal, R. Ranjan, and S. Menon*, “**A comparison of finite-rate kinetics and flamelet-generated manifold using a multiscale modeling framework for turbulent premixed combustion**“, Combustion Science and Technology, 191, 921-955, 2019.*R. Ranjan, and S. Menon*, “**Vorticity, backscatter and counter-gradient transport predictions using two-level simulation of highly turbulent flows**“, Journal of Turbulence, 19, 334-364, 2018.*P. Tudisco, R. Ranjan, and S. Menon*, “**Simulation of Transverse Combustion Instability in a Multi-Injector Combustor using the Time-Domain Impedance Boundary Conditions**“, Flow, Turbulence, and Combustion, 101, 55-76, 2018.*S. Yang, R. Ranjan, W. Sun, V. Yang, and S. Menon*, “**Sensitivity of predictions to chemical kinetics models in a temporally evolving turbulent non-premixed flame**“, Combustion and Flame, 183, 224-241, 2017.*P. Tudisco, R. Ranjan, S. Menon, S. Jaensch, and W. Polifke*, “**Application of the Time-Domain Impedance Boundary Condition to Large-Eddy Simulation of Combustion Instability in a Shear-Coaxial High Pressure Combustor**“, Flow, Turbulence and Combustion, 99, 185-207, 2017.*E. D. Gonzalez-Juez, A. R. Kerstein, R. Ranjan, and S. Menon*, “**Turbulent-combustion models: Basic assumptions and formulations for high-speed flows**“, Progress in Energy and Combustion Science, 60, 26-67, 2017.*S. Yang, R. Ranjan, V. Yang, S. Menon, and W. Sun*, “**Parallel on-the-fly adaptive kinetics in direct numerical simulation of turbulent premixed flame**“, Proceedings of Combustion Institute, 36, 2025-2032, 2017.*R. Ranjan, B. Muralidharan & S. Menon*, “**Subgrid-scale modeling of reaction-diffusion and scalar transport in turbulent premixed flames**“, Combustion Science and Technology, 188, 1496-1537, 2016.*R. Ranjan, and S. Menon*, “**On the application of the two-level large-eddy simulation method to turbulent free-shear and wake flows**“, Journal of Turbulence, 16, 136-166, 2015 .*S. Srinivasan, R. Ranjan and S. Menon*, “**Flame holding dynamics during combustion instability in a shear-coaxial injector combustor**“, Flow, Turbulence and Combustion, 94, 237-262, 2014.*R. Ranjan, and S. Menon*, “**A multi-scale large-eddy simulation method for high Reynolds number wall-bounded turbulent flows**“, Journal of Turbulence, 14, 1-38, 2013 .*R. Ranjan, and C. Pantano*, “**A collocated method for the incompressible Navier-Stokes equations inspired by the Box scheme**“, Journal of Computational Physics, 232, 346-382, 2013.

*R. Ranjan, C. Pantano, and P. Fischer*, “**Direct simulation of turbulent heat transfer in swept flow over a wire in a channel**“, International Journal of Heat and Mass Transfer, 54, 4636-4654, 2011.*R. Ranjan, C. Pantano, and P. Fischer*, “**Direct simulation of turbulent swept flow over a wire in a channel**“, Journal of Fluid Mechanics, 651, 165-209, 2010.

**Conference Publications/Abstracts/Talks**

- V. R. Hasti, and R. Ranjan, “Analysis of Flame Structure During Longitudinal Combustion Instability within a High-Pressure Shear Coaxial Single Element Combustor”, SoTiC 2021 – Symposium on Thermoacoustics in Combustion: Industry meets Academia, 2021.
- R. Ranjan, “Large-Eddy Simulation of Transition to Turbulence using the Two-Level Simulation Approach”, AIAA-2021-2892, AIAA Aviation Forum, 2021.
- J. Bowers, E. Durant, and R. Ranjan, “Application of Intrusive and Non-Intrusive Reduced Order Modeling Techniques for Simulation of Turbulent Premixed Flames”, AIAA-2021-3634, AIAA Propulsion and Energy Forum, 2021.
- P. Kumar, D. Mahida, E. Durant, and R. Ranjan, “Assessment of Subgrid Dispersion Models for Large-Eddy Simulation of Particle-Laden Turbulent Flows”, AIAA SciTech Forum and Exposition, 2021.
- R. Ranjan, A. Panchal, S. Karpe, S. Menon, and G. Ribert, “Application of Hybrid Transported-Tabulated Chemistry for Efficient Large-Eddy Simulation of Turbulent Premixed Combustion”, AIAA SciTech Forum and Exposition, 2021.
- D. Mahida, E. Durant, P. Kumar, and R. Ranjan, “Study of airflow and aerosol deposition characteristics within human airways using large-eddy simulations”, 73rd Annual Meeting of the APS Division of Fluid Dynamics, November 22-24, 2020.
- R. Ranjan, “Integral length-scale approximation based modeling of subfilter-scale scalar flux for large-eddy simulation of stratified turbulent flows”, 73rd Annual Meeting of the APS Division of Fluid Dynamics, November 22-24, 2020.
- R. Ranjan, and S. Menon, “Application of Nonlinear Reduced Order Modeling Strategy for Large Eddy Simulation of Chemically Reacting Turbulent Flows”, AIAA-2020-2140, AIAA SciTech Forum and Exposition, 2020.
- S. Karpe, R. Ranjan, and S. Menon, “Large Eddy Simulation of Sooting Turbulent Non-Premixed Mixing Layers”, AIAA-2020-2138, AIAA SciTech Forum and Exposition, 2020.
- R. Ranjan, S. Karpe, P. Patel, and S. Menon, “Assessment of Surrogate Models for Inverse Uncertainty Quantification of Simulant Combustion”, AIAA-2020-2137, AIAA SciTech Forum and Exposition, 2020.
- R. Ranjan, S. Menon, and R. Munipalli, “Reduced Basis Modeling of Single-Element Subscale Rocket Combustors”, AIAA-2018-4871, AIAA Propulsion and Energy Forum and Exposition, 2018.
- A. Panchal, R. Ranjan, and S. Menon, “Subgrid-scale Modeling for Large Eddy Simulations of Dense-to-Dilute Multiphase Reacting Flows”, AIAA-2018-4733, AIAA Propulsion and Energy Forum and Exposition, 2018.
- A. Panchal, R. Ranjan, and S. Menon, “Effect of Chemistry Modeling on Flame Stabilization of a Swirl Spray Combustor”, AIAA-2018-4684, AIAA Propulsion and Energy Forum and Exposition, 2018.
- R. Ranjan, and S. Menon, “LES of stratified turbulent wake with temperature and salinity dependent density stratification”, 70th Annual Meeting of the APS Division of Fluid Dynamics, November 19-21, 2017, Denver, CO, USA.
- R. Ranjan, and S. Menon, “Numerical Investigation of Structural and Statistical Features of Premixed Flame under Intense Turbulence”, 10th Turbulence and Shear Flow Phenomena, 2017.
- P. Milan, R. Ranjan, A. Panchal, and S. Menon, “Flame Dynamics Sensitivity to Turbulent Combustion Models in a Swirl Spray Combustor”, AIAA-2017-5079, AIAA Propulsion and Energy Forum and Exposition, 2017.
- R. Ranjan, A. Panchal, B. Muralidharan, and S. Menon, “Simulation of the evolution of premixed flame kernels in a turbulent channel flow”, 10th US National Combustion Meeting, College Park, Maryland, 2017.
- S. Yang, R. Ranjan, V. Yang, W. Sun, and S. Menon, “Sensitivity to chemical kinetics models in time-evolving turbulent non-premixed flames”, 10th US National Combustion Meeting, College Park, Maryland, 2017.
- M. Reith, R. Ranjan, S. Menon, and A. Kempf, “On the comparison of finite-rate kinetics and flamelet based subgrid models for LES of turbulent premixed flame, 10th US National Combustion Meeting, College Park, Maryland, 2017.
- A. Panchal, R. Ranjan, and S. Menon, “Subgrid mixing and evaporation modeling in large eddy simulation of two-phase reacting flows”, 10th US National Combustion Meeting, College Park, Maryland, 2017.
- U. Ayachit, A. Bauer, E. P. N. Duque, G. Eisenhauer, N. Ferrier, J. Gu, K. E. Jansen, B. Loring, Z. Lukic, S. Menon, D. Morozov, P. O’Leary, R. Ranjan, M. Rasquin, C. P. Stone, V. Vishwanath, G. H. Weber, B. Whitlock, M. Wolf, K. J. Wu, and E. W. Bethel, “Performance Analysis, Design Considerations, and Applications of Extreme-scale In Situ Infrastructures”, The International Conference for High Performance Computing, Networking, Storage and Analysis, Salt Lake City, Utah, 2016.
- R. Ranjan, G. Hannebique, A. Panchal, and S. Menon, “Towards Numerical Prediction of Jet Fuels Sensitivity of Flame Dynamics in a Swirl Spray Combustion System”, AIAA-2016-4895, AIAA Propulsion and Energy Forum and Exposition, 2016.
- R. Ranjan, A. Panchal, and S. Menon, “On the Effects of Chemical Kinetics and Thermal Conditions on the Flow and Flame Features in a Single-Element GCH4/GOX Rocket Combustor”, AIAA-2016-4999, AIAA Propulsion and Energy Forum and Exposition, 2016.
- A. Panchal, G. Hannebique, R. Ranjan, M. Akiki, and S. Menon, “A Hybrid Eulerian-Eulerian/Eulerian-Lagrangian Method for Dense-to-Dilute Dispersed Multiphase Reacting Flows”, AIAA-2016-4694, AIAA Propulsion and Energy Forum and Exposition, 2016.
- H. Muller, J. Zips, M. Pfitzner, D. Maestro, B. Cuenot, S. Menon, R. Ranjan, P. Tudisco and L. Selle, “Numerical Investigation of Flow and Combustion in a Single-Element GCH4/GOX Rocket Combustor: A comparative LES study”, AIAA-2016-4997, AIAA Propulsion and Energy Forum and Exposition, 2016.
- P. Tudisco, R. Ranjan, and S. Menon, “Numerical investigation of transverse combustion instability in a multi-element, shear-coaxial, high pressure combustor”, AIAA-2155-2016, AIAA SciTech Formum and Exposition, 2016.
- E. P. N. Duque, B. J. Whitlock, C. Stone, R. Ranjan, and S. Menon, “The impact of in-situ data processing and analytics upon scaling of CFD solvers and workflows”, 27th International Conference on Parallel Computational Fluid Dynamics, 2015.
- R. Ranjan, D. L. Thanki, and S. Menon, “Multi-scale simulation of flow past a hydrofoil at high Reynolds number”, 1st International Conference on Model Integration across Disparate Scales in Complex Turbulent Flow Simulation, June 16, 2015, State College, PA, USA.
- S. Menon, and R. Ranjan, “A priori and a posteriori analysis of the hybrid two-level large-eddy simulation method for high Reynolds number complex flows”, 15th European Turbulence Conference, August 28, 2015, Delft, Netherlands.
- R. Ranjan, and S. Menon, “Two-level large-eddy simulation of high Reynolds number turbulent flow past a bump and an inclined prolate spheroid”, AIAA-1526-2015, AIAA SciTech Formum and Exposition, 2015.
- E. D. Gonzalez, A. Kerstien, S. Menon, and R. Ranjan, “An analysis of the basic assumptions of turbulent combustion models with emphasis on high-speed flows”, AIAA-1380-2015, AIAA SciTech Formum and Exposition, 2015.
- M. P. Celano, S. Silvestri, G. Schlieben, C. Kirchberger, O. J. Haidn, T. Dawson, R. Ranjan, and S. Menon, “Experimental and Numerical Investigation for a GOX-GCH4 Shear-Coaxial Injector Element”, SP-2014-2969417, Space Propulsion Conference, May 2014, Cologne, Germany.
- T. A. Smith, R. Ranjan, and S. Menon, “An improved numerical method for the kernel density functional estimation of disperse flow”, 67th Annual Meeting of the APS Division of Fluid Dynamics, November 23-25, 2014, San Francisco, CA, USA.
- R. Ranjan, and S. Menon, “Multi-scale simulations of turbulent wall-bounded and wake flows”, AIAA-2014-1447, AIAA SciTech Formum and Exposition, 2014.
- R. Ranjan, and S. Menon, “A dynamic two-level large-eddy simulation method for high Reynolds number flows”, 66th Annual Meeting of the APS Division of Fluid Dynamics, November 24-26, 2013, Pittsburgh, PA, USA
- C. Pantano, and R. Ranjan, “An efficient state-space based method for direct simulation of particle-laden turbulent flows”, SIAM Conference on Computational Science and Engineering, February 25-March 1, 2013, Boston, MA, USA
- R. Ranjan and C. Pantano, “A novel state-space based method for direct numerical simulation of particle-laden turbulent flows”, 65th Annual Meeting of the APS Division of Fluid Dynamics, November 18-20, 2012, San Diego, CA, USA
- R. Ranjan, and C. Pantano, “Discretely conservative, non-dissipative, and stable collocated method for solving the incompressible Navier-Stokes equations”, 63rd Annual Meeting of the APS Division of Fluid Dynamics, November 21-23, 2010, Long Beach, CA, USA
- R. Ranjan, C. Pantano, and P. Fischer, “Direct simulation of heat transfer in a turbulent swept flow over a wire in a channel”, 62nd Annual Meeting of the APS Division of Fluid Dynamics, November 22-24, 2009, Minneapolis, MN, USA
- R. Ranjan, C. Pantano, A. Siegel, and P. Fischer, “Direct simulation of a turbulent channel with wire in cross flow”, 61st Annual Meeting of the APS Division of Fluid Dynamics, November 23-25, 2008, San Antonio, TX, USA
- R. Ranjan, “Effect of magnetic field on semiconductor crystal growth”, 1st Winter Academy, December 8-19, 2002, Indian Institute of Technology, Kanpur, India.

## Doctoral Dissertation

#### A novel state-space based method for direct numerical simulation of particle-laden turbulent flows

R. Ranjan, University of Illinois at Urbana-Champaign, December 2012.

➠ Recipient of the Stanley I. Weiss outstanding thesis award in 2013 from the Department of Mechanical Science and Engineering at the University of Illinois at Urbana-Champaign.