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Proceedings Papers

Drag Reduction Through Boundary Layer Analysis on Flow Over Bi-Textured Thin Plates

K. Nandakumar Chandran, Yu Sin Jeong, Ranjith S. Kumar, June Kee Min, Man Yeong Ha
Proc. ASME. FEDSM2024, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC); Multiphase Flow (MFTC), V001T03A022, July 15–17, 2024
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2024-132010
https://doi.org/10.1115/FEDSM2024-132010
View Paper titled, Drag Reduction Through Boundary Layer Analysis on Flow Over Bi-Textured Thin Plates
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Topics: Boundary layers, Drag reduction, Flow (Dynamics), Plates (structures), Shear (Mechanics), Skin friction (Fluid dynamics), Drag (Fluid dynamics), Reynolds number, Anisotropy, Biomimetics
Proceedings Papers

Application of Nonlinear Frequency Response Analysis for Windmilling

Devesh Kumar, Don Powell, David Carlson, J. S. Kumar, Jianming Cao
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT26A004, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122018
https://doi.org/10.1115/GT2024-122018
View Paper titled, Application of Nonlinear Frequency Response Analysis for Windmilling
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Topics: Frequency response, Algebra, Computer software, Frequency standards, Newton's method, Robustness, Rotordynamics, Steady state, Time-domain analysis
Proceedings Papers

Damping Phenomena in Rotating Machines: A Focus on Rotor Damping With Synchronous and Asynchronous Excitation

Francesco D’Alessandro, Florian Garnier, Damien Guivarch, Amit Zutshi, Weize Kang, Manoj Kunnil, Payyoor Narayanan, Mark Robinson, J. S. Kumar, Jianming Cao, Ted Rose
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT26A010, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125865
https://doi.org/10.1115/GT2024-125865
View Paper titled, Damping Phenomena in Rotating Machines: A Focus on Rotor Damping With Synchronous and Asynchronous Excitation
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Topics: Damping, Excitation, Machinery, Rotors, Aircraft engines, Computer software, Rotation, Vibration, Whirls, Aerospace industry
Proceedings Papers

A Highly Compact, Multi-Material, Fluid Powered Actuation System for MRI-Guided Surgical Intervention

John E. Peters, Abby M. Grillo, Daniel S. Esser, Sarah J. Garrow, Nithin S. Kumar, Tyler Ball, Robert Naftel, Dario J. Englot, Joseph Neimat, William A. Grissom, Robert J. Webster, III, Eric J. Barth
Proc. ASME. FPMC2023, ASME/BATH 2023 Symposium on Fluid Power and Motion Control, V001T01A007, October 16–18, 2023
Publisher: American Society of Mechanical Engineers
Paper No: FPMC2023-110577
https://doi.org/10.1115/FPMC2023-110577
View Paper titled, A Highly Compact, Multi-Material, Fluid Powered Actuation System for MRI-Guided Surgical Intervention
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Topics: Fluids, Magnetic resonance imaging, Surgery, Actuators, Additive manufacturing, Pressure, Design, Instrumentation, Magnetic fields, Motion control
Journal Articles

Thermal and Air Management of an Open Cathode Proton Exchange Membrane Fuel Cell Using Sliding Mode Control

Krishnil R. Ram, Shanal S. Kumar, Vincent Léchappé, Ali Mohammadi, Maurizio Cirrincione
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. May 2024, 21(2): 021010.
Paper No: JEECS-22-1158
https://doi.org/10.1115/1.4063056
Published Online: August 16, 2023
View Article titled, Thermal and Air Management of an Open Cathode Proton Exchange Membrane Fuel Cell Using Sliding Mode Control
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Topics: Control equipment, Flow (Dynamics), Hydrogen, Oxygen, Proton exchange membrane fuel cells, Sliding mode control, Temperature, Stress, Water, Fuel cells
Journal Articles

Performance Analysis of a Phase Changing Material Based Thermocycler for Nucleic Acid Amplification

B. Indulakshmi, Nikhil Prasad, Ranjith S. Kumar
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. May 2023, 15(5): 050901.
Paper No: TSEA-22-1204
https://doi.org/10.1115/1.4055070
Published Online: March 29, 2023
View Article titled, Performance Analysis of a Phase Changing Material Based Thermocycler for Nucleic Acid Amplification
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Topics: Annealing, Fluids, Heat transfer, Melting, Temperature, Maintenance, Flow (Dynamics), Microfluidics
Journal Articles

Finite Element Analysis of Bent Rotors

Konrad Juethner, Ted Rose, J. S. Kumar, Jianming Cao, Gregory M. Savela, Chris J. Zuck, Parag H. Mathuria
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2023, 145(1): 011025.
Paper No: GTP-22-1404
https://doi.org/10.1115/1.4055452
Published Online: December 14, 2022
View Article titled, Finite Element Analysis of Bent Rotors
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Topics: Rotors, Bearings
Proceedings Papers

Finite Element Analysis of Bent Rotors

Konrad Juethner, Ted Rose, J. S. Kumar, Jianming Cao, Gregory M. Savela, Chris J. Zuck, Parag H. Mathuria
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79752
https://doi.org/10.1115/GT2022-79752
View Paper titled, Finite Element Analysis of Bent Rotors
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Topics: Finite element analysis, Rotors, Bearings, Excitation, Finite element methods, Manufacturing, Metrology, Rotor assembly, Stress, Cooling
Proceedings Papers

Mixed Whirl Modes in Numerical Rotordynamics Analysis

Konrad Juethner, Ted Rose, J. S. Kumar, Jianming Cao, Gregory M. Savela, Chris J. Zuck, Parag H. Mathuria
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A004, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79755
https://doi.org/10.1115/GT2022-79755
View Paper titled, Mixed Whirl Modes in Numerical Rotordynamics Analysis
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Topics: Rotordynamics, Whirls, Rotors, Design, Eigenvalues, Stability, Algorithms, Economics , Fatigue, Finite element analysis
Journal Articles

Micromechanics Approach for the Overall Elastic Properties of Ceramic Matrix Composites Incorporating Defect Structures

Rajesh S. Kumar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2022, 144(3): 031026.
Paper No: GTP-20-1427
https://doi.org/10.1115/1.4049485
Published Online: February 10, 2022
View Article titled, Micromechanics Approach for the Overall Elastic Properties of Ceramic Matrix Composites Incorporating Defect Structures
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Topics: Ceramic matrix composites, Elasticity, Micromechanics (Engineering), Fibers, Composite materials
Journal Articles

Analytical Modeling of Laminar Developing Flow Between Hydrophobic Surfaces With Different Slip-Velocities

Vijay V. Sankar, Jaimon Cletus, Arun M. G., Ranjith S. Kumar
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2022, 144(4): 041301.
Paper No: FE-21-1233
https://doi.org/10.1115/1.4053251
Published Online: February 7, 2022
View Article titled, Analytical Modeling of Laminar Developing Flow Between Hydrophobic Surfaces With Different Slip-Velocities
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Topics: Boundary layers, Entrance region, Flow (Dynamics), Fluids, Hydrodynamics, Hydrophobicity, Microchannels, Modeling, Momentum, Particulate matter
Proceedings Papers

Surface-Mounted Distributed Fiber Optic Sensor Measurements, and Concrete Damaged Plasticity Modeling for Damage Analysis of Reinforced Concrete Beams

U. M. N. Jayawickrema, A. S. Kumar, H. M. C. M. Herath, N. K. Hettiarachchi, H. P. Sooriyaarachchi, J. A. Epaarachchi
Proc. ASME. SMASIS2021, ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T08A002, September 14–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2021-67524
https://doi.org/10.1115/SMASIS2021-67524
View Paper titled, Surface-Mounted Distributed Fiber Optic Sensor Measurements, and Concrete Damaged Plasticity Modeling for Damage Analysis of Reinforced Concrete Beams
Open the PDF for Surface-Mounted Distributed Fiber Optic Sensor Measurements, and Concrete Damaged Plasticity Modeling for Damage Analysis of Reinforced Concrete Beams in another window
Topics: Concretes, Damage, Fiber optic sensors, Modeling, Plasticity, Reinforced concrete, Structural health monitoring
Proceedings Papers

Optimal Design of Forging Processes With Deformation and Temperature Constraints

R. V. Grandhi, H. Cheng, S. S. Kumar
Proc. ASME. DETC93, 19th Design Automation Conference: Volume 2 — Design Optimization; Geometric Modeling and Tolerance Analysis; Mechanism Synthesis and Analysis; Decomposition and Design Optimization, 583-593, September 19–22, 1993
Publisher: American Society of Mechanical Engineers
Paper No: DETC1993-0433
https://doi.org/10.1115/DETC1993-0433
View Paper titled, Optimal Design of Forging Processes With Deformation and Temperature Constraints
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Topics: Deformation, Design, Forging, Temperature, Disks, Finite element analysis, Forgings (Products), Optimal control, Plane strain, Thermal analysis
Proceedings Papers

Micromechanics Approach for the Overall Elastic Properties of Ceramic Matrix Composites Incorporating Defect Structures

Rajesh S. Kumar
Proc. ASME. GT2020, Volume 3: Ceramics; Coal, Biomass, Hydrogen, and Alternative Fuels, V003T02A011, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16056
https://doi.org/10.1115/GT2020-16056
View Paper titled, Micromechanics Approach for the Overall Elastic Properties of Ceramic Matrix Composites Incorporating Defect Structures
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Topics: Ceramic matrix composites, Elasticity, Micromechanics (Engineering)
Journal Articles

Foreign Object Impact Damage in Ceramic Matrix Composites: Experiments and Computational Predictions

Rajesh S. Kumar, Matthew D. Mordasky
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2020, 142(4): 041014.
Paper No: GTP-19-1440
https://doi.org/10.1115/1.4044931
Published Online: February 3, 2020
View Article titled, Foreign Object Impact Damage in Ceramic Matrix Composites: Experiments and Computational Predictions
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Topics: Ceramic matrix composites, Damage, Delamination, Finite element analysis
Proceedings Papers

Foreign Object Impact Damage in Ceramic Matrix Composites: Experiments and Computational Predictions

Rajesh S. Kumar, Matthew M. Mordasky
Proc. ASME. GT2019, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A006, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90368
https://doi.org/10.1115/GT2019-90368
View Paper titled, Foreign Object Impact Damage in Ceramic Matrix Composites: Experiments and Computational Predictions
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Topics: Ceramic matrix composites, Damage, Finite element analysis
Proceedings Papers

Delamination Fracture in Ceramic Matrix Composites: From Coupons to Components

Rajesh S. Kumar, Matthew Mordasky, Greg Ojard
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A003, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75571
https://doi.org/10.1115/GT2018-75571
View Paper titled, Delamination Fracture in Ceramic Matrix Composites: From Coupons to Components
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Topics: Ceramic matrix composites, Delamination, Fracture (Materials), Modeling, Cantilever beams, Computer simulation, Finite element analysis, Fracture toughness, Geometry, Stress
Journal Articles

High Energy Efficiency With Low-Pressure Drop Configuration for an All-Vanadium Redox Flow Battery

S. Kumar, S. Jayanti
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research-Article
J. Electrochem. En. Conv. Stor. November 2016, 13(4): 041005.
Paper No: JEECS-16-1103
https://doi.org/10.1115/1.4035847
Published Online: February 23, 2017
View Article titled, High Energy Efficiency With Low-Pressure Drop Configuration for an All-Vanadium Redox Flow Battery
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Topics: Batteries, Energy efficiency, Flow (Dynamics), Pressure drop, Electrolytes, Pressure
Proceedings Papers

Design Optimisation and Life Estimation of Split Hub Geometry of FSAE Car

Suraj Raju, Pavan Kumar Asu Vijaya, Varun S. Kumar, Nikhil Manjunath, Harish Nagaraj
Proc. ASME. IMECE2016, Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Diagnosis, and Prognosis, V009T12A026, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-66981
https://doi.org/10.1115/IMECE2016-66981
View Paper titled, Design Optimisation and Life Estimation of Split Hub Geometry of FSAE Car
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Topics: Design, Geometry, Optimization, Stress, Fracture (Materials), Failure, Machine components, Stress concentration, Vibration, Bending strength
Journal Articles

Effect of Channel Inlet Blockage on the Wake Structure of a Rotationally Oscillating Cylinder

S. Kumar
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2016, 138(12): 121203.
Paper No: FE-15-1667
https://doi.org/10.1115/1.4034193
Published Online: September 12, 2016
View Article titled, Effect of Channel Inlet Blockage on the Wake Structure of a Rotationally Oscillating Cylinder
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Topics: Cylinders, Oscillations, Vortices, Wakes, Vortex shedding