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Proceedings Papers

Evaluating and Mitigating Fatigue Risk of Choked Flow

Yuqing Liu, Philip Diwakar, Ismat El Jaouhari, Dan Lin
Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A057, July 17–22, 2022
Paper No: PVP2022-84074
DOI: https://doi.org/10.1115/PVP2022-84074
View Paper titled, Evaluating and Mitigating Fatigue Risk of Choked Flow
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Topics: Fatigue, Flow (Dynamics), Risk, Vibration, Computational fluid dynamics, Finite element analysis, Fluid structure interaction, Piping systems, Shells, Stress
eBook Chapter

Evaluation of Flange Leakage due to Thermal Bowing and Shock

Publisher: ASME
Published: 2022
ISBN: 9780791885789
Click here to open pdf in another window PDF for Evaluation of Flange Leakage due to Thermal Bowing and Shock
Topics: Flanges, Leakage, Shock (Mechanics)
Proceedings Papers

B31 J SIF and k-Factor Test of Sweeplus ®

Yuqing Liu, Ismat El Jaouhari, Philip Diwakar, Dan Lin
Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A022, July 14–19, 2019
Paper No: PVP2019-93024
DOI: https://doi.org/10.1115/PVP2019-93024
View Paper titled, B31 J SIF and k-Factor Test of Sweeplus ®
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Topics: Acoustics, Computer software, Excitation, Fatigue life, Fittings, Flow-induced vibrations, Pipes, Piping systems, Stress, Testing
Proceedings Papers

Sweeplus ® : An Integrated Solution to Pipe Vibration Failures

Yuqing Liu, Philip Diwakar, Ismat El Jaouhari, Dan Lin
Proc. ASME. PVP2019, Volume 4: Fluid-Structure Interaction, V004T04A007, July 14–19, 2019
Paper No: PVP2019-93023
DOI: https://doi.org/10.1115/PVP2019-93023
View Paper titled, Sweeplus ® : An Integrated Solution to Pipe Vibration Failures
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Topics: Failure, Pipes, Vibration, Fittings, Stress, Computer simulation, Fatigue life, Flow separation, Risk, Vortices
Proceedings Papers

Flame Speed and Deflagration-Detonation Analysis in Flare Stack and Header

Philip Diwakar, Jaleel Valappil
Proc. ASME. FEDSM2018, Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change, V002T09A028, July 15–20, 2018
Paper No: FEDSM2018-83445
DOI: https://doi.org/10.1115/FEDSM2018-83445
View Paper titled, Flame Speed and Deflagration-Detonation Analysis in Flare Stack and Header
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Topics: Explosions, Flames, Pipes, Temperature, Computational fluid dynamics, Containment, Safety, Transients (Dynamics), Vapors
Proceedings Papers

Estimating Fatigue Life of Thermowells in Supercritical Operation

Philip Diwakar, Yuqing Liu, Matt Jaouhari
Proc. ASME. FEDSM2018, Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change, V002T11A016, July 15–20, 2018
Paper No: FEDSM2018-83426
DOI: https://doi.org/10.1115/FEDSM2018-83426
View Paper titled, Estimating Fatigue Life of Thermowells in Supercritical Operation
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Topics: Cycles, Design, Failure, Fatigue life, Finite element analysis, Fluid dynamics, Fluids, Pipes, Vibration
Proceedings Papers

Acoustic Vibration Induced Fatigue in Welded Pipe Supports

Yuqing Liu, Philip Diwakar, Dan Lin, Matt Jaouhari, Ajay Prakash
Proc. ASME. PVP2017, Volume 3A: Design and Analysis, V03AT03A036, July 16–20, 2017
Paper No: PVP2017-65025
DOI: https://doi.org/10.1115/PVP2017-65025
View Paper titled, Acoustic Vibration Induced Fatigue in Welded Pipe Supports
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Topics: Acoustics, Fatigue, Pipes, Vibration, Design, Fatigue life, Stress, Excitation, Failure, Finite element analysis
Proceedings Papers

Bend Angle Effect on Stresses of Trimmed Elbow

Yuqing Liu, Lulin Shen, Philip Diwakar, Matt Jaouhari, Pragnesh Patel
Proc. ASME. PVP2017, Volume 3A: Design and Analysis, V03AT03A037, July 16–20, 2017
Paper No: PVP2017-65026
DOI: https://doi.org/10.1115/PVP2017-65026
View Paper titled, Bend Angle Effect on Stresses of Trimmed Elbow
Click here to open pdf in another window PDF for Bend Angle Effect on Stresses of Trimmed Elbow
Topics: Stress, Design, Pipe bends, Pipes
Proceedings Papers

Flow Induced Vibration of Equipment Internals in a Two-Phase Gas/Liquid Flow

Philip Diwakar, Ajay Prakash, Cyrus Thomas
Proc. ASME. PVP2017, Volume 4: Fluid-Structure Interaction, V004T04A055, July 16–20, 2017
Paper No: PVP2017-65812
DOI: https://doi.org/10.1115/PVP2017-65812
View Paper titled, Flow Induced Vibration of Equipment Internals in a Two-Phase Gas/Liquid Flow
Click here to open pdf in another window PDF for Flow Induced Vibration of Equipment Internals in a Two-Phase Gas/Liquid Flow
Topics: Flow (Dynamics), Flow-induced vibrations, Fluid structure interaction, Turning vanes, Blades, Failure mechanisms, Fatigue failure, Structural failures, Vortex shedding
Proceedings Papers

Development of Design Curve for Sweepolet Subjected to Acoustic Induced Vibration

Yuqing Liu, Philip Diwakar, Dan Lin, Ismat Eljaouhari, Ajay Prakash
Proc. ASME. PVP2016, Volume 3: Design and Analysis, V003T03A013, July 17–21, 2016
Paper No: PVP2016-63072
DOI: https://doi.org/10.1115/PVP2016-63072
View Paper titled, Development of Design Curve for Sweepolet Subjected to Acoustic Induced Vibration
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Topics: Acoustics, Design, Vibration, Fatigue failure, Fatigue life, Fittings, Pipes, Stress, Stress concentration, Excitation
Proceedings Papers

Acoustic Vibration Induced Fatigue in Pipe Joints

Ajay Prakash, Philip Diwakar, Dan Lin, Paul Deane, Yuqing Liu, Matt Jaouhari
Proc. ASME. PVP2015, Volume 3: Design and Analysis, V003T03A024, July 19–23, 2015
Paper No: PVP2015-45799
DOI: https://doi.org/10.1115/PVP2015-45799
View Paper titled, Acoustic Vibration Induced Fatigue in Pipe Joints
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Topics: Acoustics, Fatigue, Pipe joints, Vibration, Junctions, Pipes, Shells, Dynamic response, Fatigue failure, Finite element analysis
Proceedings Papers

Acoustic Fatigue Evaluation of Branch Connections

Dan Lin, Ajay Prakash, Philip Diwakar, Bertito David
Proc. ASME. PVP2014, Volume 3: Design and Analysis, V003T03A001, July 20–24, 2014
Paper No: PVP2014-28140
DOI: https://doi.org/10.1115/PVP2014-28140
View Paper titled, Acoustic Fatigue Evaluation of Branch Connections
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Topics: Acoustics, Fatigue, Damage, Vibration, Pipes, Excitation, Fatigue failure, Finite element analysis, Fittings, Sound pressure
Proceedings Papers

CFD Loading Assessments on a Liquid Quenched Propane System

Michael P. Kinzel, Sanjeeb Pal, Philip Diwakar, David Messersmith, Sanjay Ganjam, Prakash Desai, Christopher Kennedy, Ajay Prakash, Jonathan Berkoe, Leonard Joel Pelter, Kelly J. Knight
Proc. ASME. IMECE2013, Volume 7A: Fluids Engineering Systems and Technologies, V07AT08A046, November 15–21, 2013
Paper No: IMECE2013-65209
DOI: https://doi.org/10.1115/IMECE2013-65209
View Paper titled, CFD Loading Assessments on a Liquid Quenched Propane System
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Topics: Computational fluid dynamics, Pipes, Stress, Fluids, Slug flows, Vapors, Quenching (Metalworking), Design, Drops, Flow (Dynamics)
Proceedings Papers

Safety and Reliability Studies Using Analysis Tools

Philip Diwakar, Jonathan Berkoe
Proc. ASME. IMECE2010, Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B, 935-943, November 12–18, 2010
Paper No: IMECE2010-37338
DOI: https://doi.org/10.1115/IMECE2010-37338
View Paper titled, Safety and Reliability Studies Using Analysis Tools
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Topics: Reliability, Safety, Computational fluid dynamics, Finite element analysis, Valves, Flow (Dynamics), Noise (Sound), Temperature, Vapors, Vibration
Proceedings Papers

Operation Improvement, Reliability and Performance Optimization With Analysis and Simulation

Philip Diwakar, Jonathan Berkoe
Proc. ASME. POWER2009, ASME 2009 Power Conference, 385-392, July 21–23, 2009
Paper No: POWER2009-81223
DOI: https://doi.org/10.1115/POWER2009-81223
View Paper titled, Operation Improvement, Reliability and Performance Optimization With Analysis and Simulation
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Topics: Optimization, Reliability, Simulation, Flow (Dynamics), Computational fluid dynamics, Design, Boilers, Heat recovery steam generators, Coal, Cycles
Proceedings Papers

Study of Dynamic Stresses in Pipe Networks and Pressure Vessels Using Fluid-Solid-Interaction Models

Philip Diwakar, Lorraine Lin
Proc. ASME. PVP2007, Volume 4: Fluid-Structure Interaction, 235-243, July 22–26, 2007
Paper No: PVP2007-26009
DOI: https://doi.org/10.1115/PVP2007-26009
View Paper titled, Study of Dynamic Stresses in Pipe Networks and Pressure Vessels Using Fluid-Solid-Interaction Models
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Topics: Fluids, Pipes, Pressure vessels, Stress, Fluid structure interaction, Sloshing, Bridges (Structures), Compressors, Fatigue, Finite element analysis
Proceedings Papers

Mitigation of Bending Stress and Failure Due to Temperature Differentials in Piping Systems Carrying Multiphase Fluids: Using CFD and FEA

Philip Diwakar, Vibhor Mehrotra, Frank Richardson
Proc. ASME. HT2005, Heat Transfer: Volume 2, 467-475, July 17–22, 2005
Paper No: HT2005-72463
DOI: https://doi.org/10.1115/HT2005-72463
View Paper titled, Mitigation of Bending Stress and Failure Due to Temperature Differentials in Piping Systems Carrying Multiphase Fluids: Using CFD and FEA
Click here to open pdf in another window PDF for Mitigation of Bending Stress and Failure Due to Temperature Differentials in Piping Systems Carrying Multiphase Fluids: Using CFD and FEA
Topics: Bending (Stress), Computational fluid dynamics, Failure, Finite element analysis, Fluids, Piping systems, Temperature, Pipes, Heat transfer, Stress
Proceedings Papers

Troubleshooting Furnace Operations Using Computational Fluid Dynamics (CFD)

Vibhor Mehrotra, Philip Diwakar, Rimon Vallavanatt
Proc. ASME. PVP2004, Computational Technologies for Fluid/Thermal/Structural/Chemical Systems With Industrial Applications, Volume 2, 123-129, July 25–29, 2004
Paper No: PVP2004-3127
DOI: https://doi.org/10.1115/PVP2004-3127
View Paper titled, Troubleshooting Furnace Operations Using Computational Fluid Dynamics (CFD)
Click here to open pdf in another window PDF for Troubleshooting Furnace Operations Using Computational Fluid Dynamics (CFD)
Topics: Computational fluid dynamics, Furnaces, Modeling, Chemical reactions, Combustion, Computer software, Design, Engineers, Feedback, Flames
Proceedings Papers

Challenges in Modeling Ground Flares Using Computational Fluid Dynamics

Philip Diwakar, Vibhor Mehrotra, Rimon Vallavanatt, Thomas McLean
Proc. ASME. PVP2004, Computational Technologies for Fluid/Thermal/Structural/Chemical Systems With Industrial Applications, Volume 2, 69-81, July 25–29, 2004
Paper No: PVP2004-3121
DOI: https://doi.org/10.1115/PVP2004-3121
View Paper titled, Challenges in Modeling Ground Flares Using Computational Fluid Dynamics
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Topics: Computational fluid dynamics, Modeling, Flames, Radiation (Physics), Structures, Aircraft, Chemical reactions, Combustion, Computer software, Design
Proceedings Papers

Mitigation of Bending Stress and Failure Due to Temperature Differentials in Piping Systems Carrying Multiphase Fluids: Using CFD and FEA

Philip Diwakar, Vibhor Mehrotra, Franklin Richardson
Proc. ASME. IMECE2005, Recent Advances in Solids and Structures, 85-93, November 5–11, 2005
Paper No: IMECE2005-79969
DOI: https://doi.org/10.1115/IMECE2005-79969
View Paper titled, Mitigation of Bending Stress and Failure Due to Temperature Differentials in Piping Systems Carrying Multiphase Fluids: Using CFD and FEA
Click here to open pdf in another window PDF for Mitigation of Bending Stress and Failure Due to Temperature Differentials in Piping Systems Carrying Multiphase Fluids: Using CFD and FEA
Topics: Bending (Stress), Computational fluid dynamics, Failure, Finite element analysis, Fluids, Piping systems, Temperature, Pipes, Heat transfer, Fracture (Materials)