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Journal Articles

Modeling of Metal Matrix Concentrated Solar Receivers for Supercritical Carbon Dioxide Power Blocks

Vyas Duggirala, Venkatanarasimha Hegde, Pramod Kumar, Venkateswara Reddy
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2025, 147(3): 031010.
Paper No: GTP-24-1430
https://doi.org/10.1115/1.4066371
Published Online: October 4, 2024
View Article titled, Modeling of Metal Matrix Concentrated Solar Receivers for Supercritical Carbon Dioxide Power Blocks
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Topics: Computer simulation, Density, Enthalpy, Heat exchangers, Metals, Microchannels, Modeling, Phase change materials, Solar energy, Supercritical carbon dioxide
Journal Articles

Optimal Part-Load Control of Supercritical Carbon Dioxide Brayton Cycles

Accepted Manuscript
Shrey Gupta, Pramod Kumar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power.
Paper No: GTP-24-1610
https://doi.org/10.1115/1.4066782
Published Online: October 4, 2024
View Article titled, Optimal Part-Load Control of Supercritical Carbon Dioxide Brayton Cycles
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Topics: Brayton cycle, Stress, Supercritical carbon dioxide, Cycles, Compressors, Gas compressors, Turbomachinery, Carbon footprint, Design, Modeling
Journal Articles

Vaneless Diffuser Modelling for Real Gas Supercritical Carbon Dioxide Flows- Need for a Data Driven Approach

Accepted Manuscript
Lakshminarayanan Seshadri, Pramod Kumar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power.
Paper No: GTP-24-1602
https://doi.org/10.1115/1.4066709
Published Online: September 28, 2024
View Article titled, Vaneless Diffuser Modelling for Real Gas Supercritical Carbon Dioxide Flows- Need for a Data Driven Approach
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Topics: Flow (Dynamics), Modeling, Supercritical carbon dioxide, Vaneless diffusers, Artificial neural networks, Computational fluid dynamics, Skin friction (Fluid dynamics), Compressors, Differential equations, Friction
Proceedings Papers

CFD Modeling of End Effects of Gas Cooler Heat Exchanger for sCO 2 Power Blocks

Vyas Duggirala, Venkata N. Hegde, Venkateswara Reddy, Pramod Kumar, Arun Muley
Proc. ASME. HT2024, ASME 2024 Heat Transfer Summer Conference, V001T05A002, July 15–17, 2024
Publisher: American Society of Mechanical Engineers
Paper No: HT2024-130976
https://doi.org/10.1115/HT2024-130976
View Paper titled, CFD Modeling of End Effects of Gas Cooler Heat Exchanger for sCO 2 Power Blocks
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Topics: Computational fluid dynamics, Heat exchangers, Modeling
Proceedings Papers

Vaneless Diffuser Modelling for Real Gas Supercritical Carbon Dioxide Flows- Need for a Data Driven Approach

Lakshminarayanan Seshadri, Pramod Kumar
Proc. ASME. GT2024, Volume 11: Supercritical CO2, V011T28A021, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126308
https://doi.org/10.1115/GT2024-126308
View Paper titled, Vaneless Diffuser Modelling for Real Gas Supercritical Carbon Dioxide Flows- Need for a Data Driven Approach
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Topics: Compressors, Flow (Dynamics), Modeling, Supercritical carbon dioxide, Vaneless diffusers
Proceedings Papers

Optimal Part-Load Performance of Supercritical Carbon Dioxide Brayton Cycles During Inventory Control

Shrey Sahai Gupta, Pramod Kumar
Proc. ASME. GT2024, Volume 11: Supercritical CO2, V011T28A027, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127526
https://doi.org/10.1115/GT2024-127526
View Paper titled, Optimal Part-Load Performance of Supercritical Carbon Dioxide Brayton Cycles During Inventory Control
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Topics: Brayton cycle, Stress, Supercritical carbon dioxide
Proceedings Papers

Topological Shape and Performance Optimisation of Microchannel Diffusion-Bonded Heat Exchangers Used in sCO2 Brayton Cycle

Shubham Kumar Vishwakarma, Adhip Srivastava, Pramod Kumar, Pradip Dutta, Nagendra Somanath
Proc. ASME. GT2024, Volume 11: Supercritical CO2, V011T28A015, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124223
https://doi.org/10.1115/GT2024-124223
View Paper titled, Topological Shape and Performance Optimisation of Microchannel Diffusion-Bonded Heat Exchangers Used in sCO2 Brayton Cycle
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Topics: Brayton cycle, Diffusion (Physics), Genetic algorithms, Heat exchangers, Heat transfer, Microchannels, Optimization, Shapes, Topology
Proceedings Papers

Evaluation of Cold Flow Test Conditions and Test Fluid Selection for a 60-kW Radial Inflow Supercritical CO 2 Turbine

Syed Jiaul Hoque, Shrey Sahai Gupta, Pramod Kumar
Proc. ASME. GT2024, Volume 11: Supercritical CO2, V011T28A043, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129197
https://doi.org/10.1115/GT2024-129197
View Paper titled, Evaluation of Cold Flow Test Conditions and Test Fluid Selection for a 60-kW Radial Inflow Supercritical CO 2 Turbine
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Topics: Computational fluid dynamics, Flow (Dynamics), Fluids, Inflow, Supercritical carbon dioxide, Turbines
Proceedings Papers

Modeling of Metal Matrix Concentrated Solar Receivers for sCO 2 Power Blocks

Vyas Duggirala, Venkatanarasimha Hegde, Venkateswara Reddy, Pramod Kumar
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A043, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129516
https://doi.org/10.1115/GT2024-129516
View Paper titled, Modeling of Metal Matrix Concentrated Solar Receivers for sCO 2 Power Blocks
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Topics: Heat exchangers, Metals, Modeling, Phase change materials, Solar energy
Journal Articles

Numerical Investigations of Stirring Induced Flow on Solidification and Interface Behavior in Continuous Casting Mold With Bifurcated Nozzle

Vipul Kumar Gupta, Pradeep Kumar Jha, Pramod Kumar Jain
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. June 2024, 146(6): 062402.
Paper No: HT-23-1259
https://doi.org/10.1115/1.4064561
Published Online: March 15, 2024
View Article titled, Numerical Investigations of Stirring Induced Flow on Solidification and Interface Behavior in Continuous Casting Mold With Bifurcated Nozzle
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Topics: Current density, Flow (Dynamics), Modeling, Solidification, Steel, Slags, Casting, Magnetic fields
Journal Articles

Quasi-One-Dimensional Loss Model of Volute Using Boundary Layer Approach for Inward Flow Radial Supercritical CO 2 Turbines

Syed Jiaul Hoque, Pramod Kumar, Pramod Chandra Gopi
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2024, 146(1): 011019.
Paper No: GTP-23-1399
https://doi.org/10.1115/1.4063548
Published Online: November 21, 2023
View Article titled, Quasi-One-Dimensional Loss Model of Volute Using Boundary Layer Approach for Inward Flow Radial Supercritical CO 2 Turbines
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Topics: Boundary layers, Design, Flow (Dynamics), Pressure, Turbines, Computational fluid dynamics, Rotors
Proceedings Papers

Evaluation of Empirical Loss Models for Base Drag Prediction of sCO2 Axial Turbine Aerofoils

R. Senthil Kumaran, Sharath P. P., Dilipkumar B. Alone, Pramod Kumar
Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A024, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103587
https://doi.org/10.1115/GT2023-103587
View Paper titled, Evaluation of Empirical Loss Models for Base Drag Prediction of sCO2 Axial Turbine Aerofoils
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Topics: Airfoils, Cascades (Fluid dynamics), Drag (Fluid dynamics), Turbines
Proceedings Papers

Influence of Geometrical and Operational Parameters on the Leakage Flow of a Radial Labyrinth Seal for Application in Inward Flow Radial Supercritical CO2 Turbine

Saurabh Deorao Lanjewar, Arockia Fenil, Pramod Kumar, Pramod Chandra Gopi
Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A025, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103605
https://doi.org/10.1115/GT2023-103605
View Paper titled, Influence of Geometrical and Operational Parameters on the Leakage Flow of a Radial Labyrinth Seal for Application in Inward Flow Radial Supercritical CO2 Turbine
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Topics: Flow (Dynamics), Leakage flows, Pressure, Supercritical carbon dioxide, Turbines
Proceedings Papers

Numerical Analysis of a Shrouded Centrifugal Compressor for Use in Supercritical Carbon Dioxide (s-CO2) Brayton Cycle

Arockia Fenil, Lakshminarayanan Seshadri, Pramod Kumar, Abdul Nassar, Gaurav Giri
Proc. ASME. GT2023, Volume 13C: Turbomachinery — Deposition, Erosion, Fouling, and Icing; Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V13CT32A032, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103420
https://doi.org/10.1115/GT2023-103420
View Paper titled, Numerical Analysis of a Shrouded Centrifugal Compressor for Use in Supercritical Carbon Dioxide (s-CO2) Brayton Cycle
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Topics: Brayton cycle, Compressors, Computational fluid dynamics, Design, Numerical analysis, Supercritical carbon dioxide
Proceedings Papers

Numerical Investigations of Sector-Shaped Hybrid Fluid Film Thrust Bearing for High-Speed sCO2 Turbomachinery

Ashutosh Patel, Pramod Kumar
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A028, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103582
https://doi.org/10.1115/GT2023-103582
View Paper titled, Numerical Investigations of Sector-Shaped Hybrid Fluid Film Thrust Bearing for High-Speed sCO2 Turbomachinery
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Topics: Discharge coefficient, Fluid films, Supercritical carbon dioxide, Thrust bearings, Turbomachinery
Proceedings Papers

One Dimensional Model to Predict the Total Pressure Loss of Volute for Inward Flow Radial Supercritical CO2 Turbines

Syed Jiaul Hoque, Pramod Kumar, Pramod Chandra Gopi
Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A021, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103179
https://doi.org/10.1115/GT2023-103179
View Paper titled, One Dimensional Model to Predict the Total Pressure Loss of Volute for Inward Flow Radial Supercritical CO2 Turbines
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Topics: Flow (Dynamics), Pressure, Supercritical carbon dioxide, Turbines, Computational fluid dynamics, Errors, Boundary layers, Boundary-value problems, Computer software, Cross section (Physics)
Proceedings Papers

Comparison of Ocean Wave Direction Spectra Estimated Using an Array of Three Optech Laser Sensors and a Directional Waverider Buoy

Pramod Kumar Jangir, Kevin C. Ewans, Ian R. Young
Proc. ASME. OMAE2023, Volume 5: Ocean Engineering, V005T06A055, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-101196
https://doi.org/10.1115/OMAE2023-101196
View Paper titled, Comparison of Ocean Wave Direction Spectra Estimated Using an Array of Three Optech Laser Sensors and a Directional Waverider Buoy
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Topics: Buoys, Lasers, Ocean waves, Sensors, Spectra (Spectroscopy)
Journal Articles

Sliding Pressure Inventory Control of a Supercritical CO 2 Cycle for Concentrated Solar Power—Analysis and Implications

Lakshminarayanan Seshadri, Pramod Kumar
Journal: Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. February 2024, 146(1): 011009.
Paper No: SOL-23-1011
https://doi.org/10.1115/1.4063183
Published Online: September 13, 2023
View Article titled, Sliding Pressure Inventory Control of a Supercritical CO 2 Cycle for Concentrated Solar Power—Analysis and Implications
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Topics: Carbon dioxide, Compressors, Cycles, Design, Fluids, Heat exchangers, Pressure, Stress, Supercritical carbon dioxide, Temperature
Proceedings Papers

Semi-Analytical Model for High-Speed Rotor Whirl Prediction: An Assumed Modes Formulation for an Axisymmetric Rotor With Non-Uniform Properties

Riju Chatterjee, Ashutosh Patel, Nirmal Kumar, Pramod Kumar
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A012, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82632
https://doi.org/10.1115/GT2022-82632
View Paper titled, Semi-Analytical Model for High-Speed Rotor Whirl Prediction: An Assumed Modes Formulation for an Axisymmetric Rotor With Non-Uniform Properties
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Topics: Rotors, Whirls
Proceedings Papers

Specific Speed Considerations for Inward Flow Radial Supercritical CO 2 Turbines

Syed J. Hoque, Pramod Kumar, Pramod Chandra Gopi
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A011, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82090
https://doi.org/10.1115/GT2022-82090
View Paper titled, Specific Speed Considerations for Inward Flow Radial Supercritical CO 2 Turbines
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Topics: Coriolis force, Design, Flow (Dynamics), Supercritical carbon dioxide, Turbines, Gas turbines, Blades, Rotors, Boundary-value problems, Computational fluid dynamics