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Proceedings Papers

Mitigation of Laminar Separation Bubble Through Leading-Edge Modification of an Aerofoil With Herringbone Riblets

Ravi Kumar, Pradeep Singh, Subrata Sarkar
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT36A007, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124289
https://doi.org/10.1115/GT2024-124289
View Paper titled, Mitigation of Laminar Separation Bubble Through Leading-Edge Modification of an Aerofoil With Herringbone Riblets
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Topics: Airfoils, Bubbles, Separation (Technology)
Proceedings Papers

Assessment of Power Generation Systems With and Without Carbon Capture on Offshore Hydrocarbon Processing Facilities

Jaime HuiChoo Tan, Chong Jin Lee, Ravi Kumar Mantry
Proc. ASME. OMAE2024, Volume 1: Offshore Technology, V001T01A008, June 9–14, 2024
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2024-135750
https://doi.org/10.1115/OMAE2024-135750
View Paper titled, Assessment of Power Generation Systems With and Without Carbon Capture on Offshore Hydrocarbon Processing Facilities
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Topics: Carbon capture and storage, Carbon dioxide, Combined cycles, Emissions, Energy / power systems, Energy efficiency, FPSO, Ocean engineering
Journal Articles

Design and Development of Novel Lattice Structures for Optimum Energy Absorption

Uday Kumar Jonnala, Lakshmi Rama K, Ravi Kumar Y
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. July 2024, 146(3): 031010.
Paper No: MATS-23-1259
https://doi.org/10.1115/1.4064752
Published Online: February 26, 2024
View Article titled, Design and Development of Novel Lattice Structures for Optimum Energy Absorption
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Topics: Absorption, Design, Diamonds, Mechanical properties, Triply periodic minimal surfaces, Additive manufacturing, Stress-strain curves, Extruding
Proceedings Papers

Towards Use of Structural Equation Modelling in Enumerating Correlation of Qualitative and Quantitative Factors With Manufacturing Part Deviation

Karthik Srinivasan, Ravi Kumar G. V. V.
Proc. ASME. GTINDIA2023, ASME 2023 Gas Turbine India Conference, V001T10A001, December 7–8, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2023-118037
https://doi.org/10.1115/GTINDIA2023-118037
View Paper titled, Towards Use of Structural Equation Modelling in Enumerating Correlation of Qualitative and Quantitative Factors With Manufacturing Part Deviation
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Topics: Manufacturing, Modeling, Optical quality control, Gas turbines, Aerospace industry, Aircraft engines, Airfoils, Artificial intelligence, Brain, Decision making
Proceedings Papers

Wind Tunnel Assisted Analysis on the Effect of Span-Wise Separation of Small Wind Turbines: A Near Wake Region Study

Ravi Kumar, Ojing Siram, Ujjwal K. Saha, Niranjan Sahoo
Proc. ASME. GTINDIA2023, ASME 2023 Gas Turbine India Conference, V001T06A003, December 7–8, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2023-118499
https://doi.org/10.1115/GTINDIA2023-118499
View Paper titled, Wind Tunnel Assisted Analysis on the Effect of Span-Wise Separation of Small Wind Turbines: A Near Wake Region Study
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Topics: Separation (Technology), Wakes, Wind tunnels, Wind turbines
Journal Articles

Synchronization of a Class of Nonlinear Systems With and Without Uncertainty Using State Feedback and Extended Kalman Filter Based Control Scheme

Ravi Kumar Ranjan, Bharat Bhushan Sharma
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. February 2024, 19(2): 021005.
Paper No: CND-23-1082
https://doi.org/10.1115/1.4064270
Published Online: December 22, 2023
View Article titled, Synchronization of a Class of Nonlinear Systems With and Without Uncertainty Using State Feedback and Extended Kalman Filter Based Control Scheme
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Topics: Synchronization, Uncertainty, Feedback, State feedback, Control equipment, Kalman filters
Proceedings Papers

Study of Rotational Heat Transfer Coefficients in Enclosed Flow Over High-Speed Rotors

Narayana Teja Ayyadevara, Ravi Kumar Kavali, Balaji Subramanian
Proc. ASME. IMECE2022, Volume 8: Fluids Engineering; Heat Transfer and Thermal Engineering, V008T11A004, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-96470
https://doi.org/10.1115/IMECE2022-96470
View Paper titled, Study of Rotational Heat Transfer Coefficients in Enclosed Flow Over High-Speed Rotors
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Topics: Alloys, Flow (Dynamics), Heat transfer coefficients, Rotors
Proceedings Papers

Transition of a Laminar Separated Boundary Layer Under Varying Adverse Pressure Gradient

Ravi Kumar, Pradeep Singh, S. Sarkar
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A029, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83045
https://doi.org/10.1115/GT2022-83045
View Paper titled, Transition of a Laminar Separated Boundary Layer Under Varying Adverse Pressure Gradient
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Topics: Boundary layers, Bubbles, Pressure gradient, Separation (Technology)
Journal Articles

Exergetic Performance Analysis of Energy Storage Unit Fitted With Wire Coil Inserts

Ravi Kumar, Manoj Kumar, Anil Kumar Patil
Journal: Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. April 2023, 145(2): 021003.
Paper No: SOL-21-1414
https://doi.org/10.1115/1.4055074
Published Online: August 10, 2022
View Article titled, Exergetic Performance Analysis of Energy Storage Unit Fitted With Wire Coil Inserts
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Topics: Energy storage, Entropy, Exergy, Storage, Wire, Temperature, Heat transfer
Journal Articles

A Comprehensive Review on Analytical Formulations of Wind Turbine Wake Models and Future Scope in the Development of Wind Farms of Assorted Configurations

Ojing Siram, Ravi Kumar, Ujjwal K. Saha, Niranjan Sahoo
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Review Articles
J. Energy Resour. Technol. November 2022, 144(11): 110801.
Paper No: JERT-22-1064
https://doi.org/10.1115/1.4054175
Published Online: April 26, 2022
View Article titled, A Comprehensive Review on Analytical Formulations of Wind Turbine Wake Models and Future Scope in the Development of Wind Farms of Assorted Configurations
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Topics: Wakes, Wind turbines, Wind farms
Journal Articles

Wind Tunnel Probe Into an Array of Small-Scale Horizontal-Axis Wind Turbines Operating at Low Tip Speed Ratio Conditions

Ojing Siram, Ravi Kumar, Ujjwal K. Saha, Niranjan Sahoo
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. September 2022, 144(9): 091303.
Paper No: JERT-21-1880
https://doi.org/10.1115/1.4053579
Published Online: February 22, 2022
View Article titled, Wind Tunnel Probe Into an Array of Small-Scale Horizontal-Axis Wind Turbines Operating at Low Tip Speed Ratio Conditions
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Topics: Flow (Dynamics), Rotors, Turbines, Wakes, Wind tunnels, Blades, Wind farms, Horizontal axis wind turbines
Proceedings Papers

Far-Infrared Transmittance and Reflectance of YBa 2 Cu 3 O 7-δ Films on Si Substrates

A. Ravi Kumar, Zhuomin M. Zhang, Vladimir A. Boychev, David B. Tanner, Leila R. Vale, David A. Rudman
Proc. ASME. IMECE98, Heat Transfer: Volume 2 — Combustion and Radiation Heat Transfer, 99-109, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0624
https://doi.org/10.1115/IMECE1998-0624
View Paper titled, Far-Infrared Transmittance and Reflectance of YBa 2 Cu 3 O 7-δ Films on Si Substrates
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Topics: Reflectance, Yttrium barium copper oxides, Radiation (Physics), Refractive index, Composite materials, Fluids, High temperature, Resonance, Sensors, Temperature
Proceedings Papers

Fabry-Perot Resonators Built With YBa 2 Cu 3 O 7-δ Films on Si Substrates

A. Ravi Kumar, Vladimir A. Boychev, Zhuomin M. Zhang, David B. Tanner
Proc. ASME. IMECE99, Heat Transfer: Volume 3, 15-23, November 14–19, 1999
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1999-1058
https://doi.org/10.1115/IMECE1999-1058
View Paper titled, Fabry-Perot Resonators Built With YBa 2 Cu 3 O 7-δ Films on Si Substrates
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Topics: Design, Film thickness, Michelson interferometers, Optical mirrors, Optimization, Resonance, Temperature, Thin films, Yttrium barium copper oxides
Proceedings Papers

Characterizing the Transitional Behavior of Wind Turbine Wake From Near to Far Wake Regimes

Ravi Kumar, Ojing Siram, Niranjan Sahoo, Ujjwal K. Saha
Proc. ASME. POWER2021, ASME 2021 Power Conference, V001T09A015, July 20–22, 2021
Publisher: American Society of Mechanical Engineers
Paper No: POWER2021-65959
https://doi.org/10.1115/POWER2021-65959
View Paper titled, Characterizing the Transitional Behavior of Wind Turbine Wake From Near to Far Wake Regimes
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Topics: Wakes, Wind tunnels, Wind turbines, Wire
Journal Articles

Charging and Discharging Characteristics of Sensible Energy Storage System With Multiple Cylindrical Passages

Ravi Kumar, Anil Kumar Patil, Manoj Kumar
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. September 2021, 143(9): 092001.
Paper No: JERT-21-1236
https://doi.org/10.1115/1.4051395
Published Online: June 24, 2021
View Article titled, Charging and Discharging Characteristics of Sensible Energy Storage System With Multiple Cylindrical Passages
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Topics: Energy efficiency, Energy storage, Temperature, Storage, Transients (Dynamics)
Proceedings Papers

Vibrational Characteristics of Composite Shafts

A. S. Sekhar, N. Ravi Kumar
Proc. ASME. DETC99, Volume 7A: 17th Biennial Conference on Mechanical Vibration and Noise, 1221-1228, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8277
https://doi.org/10.1115/DETC99/VIB-8277
View Paper titled, Vibrational Characteristics of Composite Shafts
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Topics: Composite materials, Epoxy adhesives, Epoxy resins, Boron, Carbon, Eigenvalues, Finite element methods, Graphite, Rotors, Shear deformation
Proceedings Papers

Finite Element Method (FEM) Based Simulation of Continuous Laser Ablation: Surface Temperature and Depth Profile Evolution

Sandeep Ravi-Kumar, Liangkui Jiang, Hantang Qin
Proc. ASME. MSEC2020, Volume 2: Manufacturing Processes; Manufacturing Systems; Nano/Micro/Meso Manufacturing; Quality and Reliability, V002T06A038, September 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2020-8341
https://doi.org/10.1115/MSEC2020-8341
View Paper titled, Finite Element Method (FEM) Based Simulation of Continuous Laser Ablation: Surface Temperature and Depth Profile Evolution
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Topics: Finite element methods, Heat transfer, Laser ablation, Simulation, Temperature
Journal Articles

An Area-Depth Approximation Model of Microdrilling on High-Density Polyethylene Soft Films Using Pulsed Laser Ablation

Sandeep Ravi-Kumar, Xiao Zhang, Benjamin Lies, Liangkui Jiang, Hantang Qin
Journal: Journal of Micro and Nano-Manufacturing
Publisher: ASME
Article Type: Technical Briefs
J. Micro Nano-Manuf. December 2019, 7(4): 044501.
Paper No: JMNM-19-1023
https://doi.org/10.1115/1.4045331
Published Online: November 14, 2019
View Article titled, An Area-Depth Approximation Model of Microdrilling on High-Density Polyethylene Soft Films Using Pulsed Laser Ablation
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Topics: Approximation, Density, Laser ablation, Lasers, Modeling
Journal Articles

Study of Interaction Patterns Between Evolving Interfaces Due to Boiling Around Different Arrangements of Heated Cylinders

M. B. Darshan, Ravi Kumar, Arup Kumar Das
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. November 2019, 141(11): 111503.
Paper No: HT-18-1739
https://doi.org/10.1115/1.4044591
Published Online: September 27, 2019
View Article titled, Study of Interaction Patterns Between Evolving Interfaces Due to Boiling Around Different Arrangements of Heated Cylinders
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Topics: Cylinders, Particulate matter, Vapors
Journal Articles

Influence of Inhomogeneous Deformation on Tensile Behavior of Sheets Processed Through Constrained Groove Pressing

Sunil Kumar, S. Venkatachalam, Hariharan Krishnaswamy, Ravi Kumar Digavalli, H. S. N. Murthy
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research-Article
J. Eng. Mater. Technol. October 2019, 141(4): 041007.
Paper No: MATS-18-1312
https://doi.org/10.1115/1.4043492
Published Online: May 9, 2019
View Article titled, Influence of Inhomogeneous Deformation on Tensile Behavior of Sheets Processed Through Constrained Groove Pressing
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Topics: Aluminum, Carbon steel, Deformation, Elongation, Finite element analysis, Mechanical properties, Pressing, Simulation, Yield strength, Geometry