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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
Journal Articles

Study of Electric Field-Induced Evaporation Like Process and Nucleation in Nanoscale

M. B. Darshan, Pratyush Agarwal, Dhiraj Indana, Saikat Datta, Ravi Kumar, Arup Kumar Das
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. June 2019, 141(6): 062404.
Paper No: HT-18-1152
https://doi.org/10.1115/1.4043301
Published Online: April 17, 2019
View Article titled, Study of Electric Field-Induced Evaporation Like Process and Nucleation in Nanoscale
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Topics: Density, Electric fields, Evaporation, Temperature, Water, Nucleation (Physics), Nanoscale phenomena, Vapors, Simulation, Heat
Journal Articles

Effect of Tailoring Martensite Shape and Spatial Distribution on Tensile Deformation Characteristics of Dual Phase Steels

B. Ravi Kumar, Vishal Singh, Tarun Nanda, Manashi Adhikary, Nimai Halder, T. Venugopalan
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research-Article
J. Eng. Mater. Technol. April 2018, 140(2): 021002.
Paper No: MATS-17-1114
https://doi.org/10.1115/1.4037659
Published Online: September 13, 2017
View Article titled, Effect of Tailoring Martensite Shape and Spatial Distribution on Tensile Deformation Characteristics of Dual Phase Steels
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Topics: Annealing, Shapes, Simulation, Steel, Temperature, Tensile strength, Ferrites (Magnetic materials), Grain size, Engineering simulation, Tensile deformation
Proceedings Papers

Design and Testing of a Can Combustor for a Small Gas Turbine Application

K. V. L. Narayana Rao, N. Ravi Kumar, G. Ramesha, M. Devathathan
Proc. ASME. GTINDIA2013, ASME 2013 Gas Turbine India Conference, V001T03A011, December 5–6, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2013-3691
https://doi.org/10.1115/GTINDIA2013-3691
View Paper titled, Design and Testing of a Can Combustor for a Small Gas Turbine Application
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Topics: Combustion chambers, Computational fluid dynamics, Design, Fuels, Gas turbines, Testing, Flames, Flow (Dynamics), Pressure, Aircraft engines
Journal Articles

Discussion: “Vibration Analysis of Composite Beams With End Effects Via the Formal Asymptotic Method” (Kim, J.-S., and Wang, K. W., 2010, ASME J. Vib. Acoust., 132 (4), p. 041003)

Ravi Kumar Kovvali, Dewey H. Hodges, Wenbin Yu, Jun-Sik Kim, Kon-Well Wang
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Discussions
J. Vib. Acoust. April 2014, 136(2): 025501.
Paper No: VIB-13-1368
https://doi.org/10.1115/1.4026139
Published Online: December 18, 2013
View Article titled, Discussion: “Vibration Analysis of Composite Beams With End Effects Via the Formal Asymptotic Method” (Kim, J.-S., and Wang, K. W., 2010, ASME J. Vib. Acoust., 132 (4), p. 041003)
Open the PDF for Discussion: “Vibration Analysis of Composite Beams With End Effects Via the Formal Asymptotic Method” (Kim, J.-S., and Wang, K. W., 2010, ASME J. Vib. Acoust., 132 (4), p. 041003) in another window
Topics: Composite building materials, Finite element methods, Finite element model, Vibration analysis, Mode shapes
Proceedings Papers

Vortex-Induced Vibration of a Sprung Rigid Circular Cylinder Augmented With a Nonlinear Energy Sink

Ravi Kumar R. Tumkur, Ramon Calderer, Arif Masud, Lawrence A. Bergman, Alexander F. Vakakis, Arne J. Pearlstein
Proc. ASME. IDETC-CIE2012, Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B, 85-92, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-71100
https://doi.org/10.1115/DETC2012-71100
View Paper titled, Vortex-Induced Vibration of a Sprung Rigid Circular Cylinder Augmented With a Nonlinear Energy Sink
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Topics: Circular cylinders, Vortex-induced vibration, Cylinders, Dampers, Flow (Dynamics), Displacement, Energy transformation, Finite element methods, Fluid structure interaction, Fluids
Journal Articles

Thermomechanical Behavior of Pressure Tube Under Small Break Loss of Coolant Accident for PHWR

Ashwini K. Yadav, Ravi Kumar, Akhilesh Gupta, B. Chatterjee, P. Majumdar, D. Mukhopadhyay
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2013, 135(4): 041601.
Paper No: PVT-12-1098
https://doi.org/10.1115/1.4024580
Published Online: June 11, 2013
View Article titled, Thermomechanical Behavior of Pressure Tube Under Small Break Loss of Coolant Accident for PHWR
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Topics: Pressure, Temperature, Heat, Heavy water reactors, Deformation, Accidents, Fuels, Coolants, Thermomechanics