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Proceedings Papers

Nusselt Number Dependence on Aspect Ratio and Rayleigh Number: A Numerical Study of Rayleigh-Benard Instability

Wajeeha Siddiqui, Zafar Abbas, Imran Akhtar, Muhammad Saif Ullah Khalid

Proc. ASME. FEDSM2022, Volume 2: Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC), V002T05A029, August 3–5, 2022

Paper No: FEDSM2022-87897

DOI: https://doi.org/10.1115/FEDSM2022-87897

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Topics: Cavities, Computer simulation, Rayleigh number, Rayleigh-Benard instability

Proceedings Papers

Numerical Analysis to Study the Effect of Control Temperature Location Inside a Datacenter

Atta Ul Mannan Hashmi, Arshan Ahmed Tipu, Fahad Rafi Butt, Imran Akhtar, Muhammad Saif Ullah Khalid

Proc. ASME. FEDSM2022, Volume 2: Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC), V002T05A028, August 3–5, 2022

Paper No: FEDSM2022-87885

DOI: https://doi.org/10.1115/FEDSM2022-87885

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Topics: HVAC equipment, Numerical analysis, Temperature, Temperature sensors, Cloud computing, Computational fluid dynamics, Computer simulation, Control systems, Cooling systems, Energy consumption

Journal Articles

Computational Modeling of Inertial Effects on Electromechanics of the Heart

Ovais A. Jaffery, Imran Akhtar, S. M. Imran Majeed, Tahir Zaidi

J. Comput. Nonlinear Dynam. October 2019, 14(10): 101006.

Paper No: CND-18-1441

DOI: https://doi.org/10.1115/1.4043891

Published Online: September 9, 2019

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Topics: Biological tissues, Boundary-value problems, Cardiac cycle, Computer simulation, Deformation, Fibers, Myocardium, Physiology, Pressure, Inertia (Mechanics)

Journal Articles

Micropower Generation Using Cross-Flow Instabilities: A Review of the Literature and Its Implications

Mohammed F. Daqaq, Amin Bibo, Imran Akhtar, Ali H. Alhadidi, Meghashyam Panyam, Benjamin Caldwell, Jamie Noel

J. Vib. Acoust. June 2019, 141(3): 030801.

Paper No: VIB-18-1199

DOI: https://doi.org/10.1115/1.4042521

Published Online: February 13, 2019

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Topics: Flow (Dynamics), Generators, Wakes, Flutter (Aerodynamics), Vortex-induced vibration, Design, Oscillations

Proceedings Papers

Experimental and Numerical Investigation of Vibration Damping Using a Thin Layer Coating

Imran Aziz, Sajjad Hussain, Wasim Tarar, Imran Akhtar

Proc. ASME. POWER2017-ICOPE-17, Volume 2: I&C, Digital Controls, and Influence of Human Factors; Plant Construction Issues and Supply Chain Management; Plant Operations, Maintenance, Aging Management, Reliability and Performance; Renewable Energy Systems: Solar, Wind, Hydro and Geothermal; Risk Management, Safety and Cyber Security; Steam Turbine-Generators, Electric Generators, Transformers, Switchgear, and Electric BOP and Auxiliaries; Student Competition; Thermal Hydraulics and Computational Fluid Dynamics, V002T12A007, June 26–30, 2017

Paper No: POWER-ICOPE2017-3723

DOI: https://doi.org/10.1115/POWER-ICOPE2017-3723

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Topics: Coatings, Damping, Vibration, Failure, High cycle fatigue, Resonance, Machinery, Stress, Aircraft engines, Nickel alloys

Journal Articles

Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils

Muhammad Saif Ullah Khalid, Imran Akhtar

J. Comput. Nonlinear Dynam. September 2017, 12(5): 051019.

Paper No: CND-16-1603

DOI: https://doi.org/10.1115/1.4036346

Published Online: May 17, 2017

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Topics: Airfoils, Computational fluid dynamics, Lift (Fluid dynamics)

Proceedings Papers

Three Dimensional Flow Investigation in One and a Half Stage Axial Turbine

Imran Aziz, Imran Akhtar, Usama Bin Perwez, Auwais Ahmed

Proc. ASME. IMECE2016, Volume 1: Advances in Aerospace Technology, V001T03A027, November 11–17, 2016

Paper No: IMECE2016-66703

DOI: https://doi.org/10.1115/IMECE2016-66703

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Topics: Flow (Dynamics), Turbines, Rotors, Stators, Blades, Nozzle guide vanes, Wakes, Cascades (Fluid dynamics), Fluid dynamics, Physics

Proceedings Papers

Thermal Modeling and Design Analysis of a Hybrid Microdevice for Continuous-Flow PCR Using One Heater

Usama Bin Perwez, Imran Aziz, Imran Akhtar, Tahir Zaidi

Proc. ASME. IMECE2016, Volume 10: Micro- and Nano-Systems Engineering and Packaging, V010T13A038, November 11–17, 2016

Paper No: IMECE2016-65594

DOI: https://doi.org/10.1115/IMECE2016-65594

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Topics: Design, Flow (Dynamics), Modeling, Microfluidics, Alloys, Temperature distribution, Biomedicine, Boundary-value problems, Chain, Food products

Proceedings Papers

Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils

Muhammad Saif Ullah Khalid, Imran Akhtar

Proc. ASME. IMECE2016, Volume 4A: Dynamics, Vibration, and Control, V04AT05A043, November 11–17, 2016

Paper No: IMECE2016-66859

DOI: https://doi.org/10.1115/IMECE2016-66859

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Topics: Airfoils, Lift (Fluid dynamics), Computer simulation, Damping, Aerodynamics, Attractors, Computational fluid dynamics, Emission spectroscopy, Excitation, Flow (Dynamics)

Proceedings Papers

Nonlinear Characterization of Heart Rate Variability in Normal Sinus Rhythm, Atrial Fibrillation and Congestive Heart Failure

Syed Hassan Zaidi, Imran Akhtar, Syed Imran Majeed, Tahir Zaidi, Muhammad Saif Ullah Khalid

Proc. ASME. IMECE2016, Volume 3: Biomedical and Biotechnology Engineering, V003T04A061, November 11–17, 2016

Paper No: IMECE2016-66836

DOI: https://doi.org/10.1115/IMECE2016-66836

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Topics: Heart failure, Cardiovascular system, Dynamics (Mechanics), Physiology, Time series, Algorithms, Risk

Journal Articles

Reduced-Order Modeling of Torque on a Vertical-Axis Wind Turbine at Varying Tip Speed Ratios

Muhammad Saif Ullah Khalid, Tariq Rabbani, Imran Akhtar, Naveed Durrani, M. Salman Siddiqui

J. Comput. Nonlinear Dynam. July 2015, 10(4): 041012.

Paper No: CND-14-1055

DOI: https://doi.org/10.1115/1.4028064

Published Online: July 1, 2015

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Topics: Torque, Turbines, Vertical axis wind turbines, Computational fluid dynamics

Proceedings Papers

Effect of Varying Diameter of Dental Implants During Placements in Compromised Bony Ridges at Different Insertion Torques: A Finite Element Study

Imran Aziz, Waleed A. Khan, Faisal Moeen, Imran Akhtar, Wasim Tarar

Proc. ASME. IMECE2014, Volume 3: Biomedical and Biotechnology Engineering, V003T03A020, November 14–20, 2014

Paper No: IMECE2014-38388

DOI: https://doi.org/10.1115/IMECE2014-38388

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Topics: Finite element analysis, Bone, Torque, Stress, Deformation, Manufacturing, Anisotropy, Elastic analysis, Modeling, Stress analysis (Engineering)

Proceedings Papers

Pumping Speed Measurement of the Rotary Vane Vacuum Pump by Using Numerical and Experimental Approaches

M. Nadeem Azam, M. Umar, M. Maqsood, Imran Akhtar, Imran Aziz

Proc. ASME. IMECE2014, Volume 7: Fluids Engineering Systems and Technologies, V007T09A104, November 14–20, 2014

Paper No: IMECE2014-38412

DOI: https://doi.org/10.1115/IMECE2014-38412

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Topics: Experimental methods, Vacuum pumps, Computational fluid dynamics, Pumps, Computer-aided design, Engineering simulation, Flow (Dynamics), Internal flow, Knudsen number, Modeling

Proceedings Papers

Numerical Study to Analyze the Effects of Hot/Cold Aisle Configurations on Heat Transfer Phenomenon in a Data Center

Kamran Nazir, Naveed Durrani, Imran Akhtar, M. Saif Ullah Khalid

Proc. ASME. IMECE2013, Volume 8B: Heat Transfer and Thermal Engineering, V08BT09A030, November 15–21, 2013

Paper No: IMECE2013-64457

DOI: https://doi.org/10.1115/IMECE2013-64457

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Topics: Data centers, Heat transfer

Proceedings Papers

Vibratory Stress Suppression in Turbine Blades Subjected to Aerodynamic Loading

Imran Aziz, Wasim Tarar, Imran Akhtar, M. Nadeem Azam

Proc. ASME. IMECE2013, Volume 14: Vibration, Acoustics and Wave Propagation, V014T15A017, November 15–21, 2013

Paper No: IMECE2013-63724

DOI: https://doi.org/10.1115/IMECE2013-63724

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Topics: Coatings, Stress, Turbine blades

Proceedings Papers

Numerical Study to Quantify the Effects of Struts and Central Hub on the Performance of a Three Dimensional Vertical Axis Wind Turbine Using Sliding Mesh

M. Salman Siddiqui, Naveed Durrani, Imran Akhtar

Proc. ASME. POWER2013, Volume 2: Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues; Simple and Combined Cycles; Advanced Energy Systems and Renewables (Wind, Solar and Geothermal); Energy Water Nexus; Thermal Hydraulics and CFD; Nuclear Plant Design, Licensing and Construction; Performance Testing and Performance Test Codes, V002T09A020, July 29–August 1, 2013

Paper No: POWER2013-98300

DOI: https://doi.org/10.1115/POWER2013-98300

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Topics: Vertical axis wind turbines, Blades, Computational fluid dynamics, Manufacturing, Cities, Computer simulation, Computer software, Drag (Fluid dynamics), Roofs, Torque

Proceedings Papers

Characteristics of Flow Past a Symmetric Airfoil at Low Reynolds Number: A Nonlinear Perspective

M. Saif Ullah Khalid, Imran Akhtar

Proc. ASME. IMECE2012, Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 167-175, November 9–15, 2012

Paper No: IMECE2012-87389

DOI: https://doi.org/10.1115/IMECE2012-87389

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Topics: Airfoils, Flow (Dynamics), Reynolds number, Aerodynamics, Chaos, Fluid-dynamic forces, Bifurcation, Computer simulation, Drag (Fluid dynamics), Emission spectroscopy

Proceedings Papers

GPU-Based Simulations to Analyze the Effect of Heat Source in Mixed Convection

Nabeel A. Qazi, Imran Akhtar, M. Saif Ullah Khalid

Proc. ASME. IMECE2012, Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 361-371, November 9–15, 2012

Paper No: IMECE2012-85850

DOI: https://doi.org/10.1115/IMECE2012-85850

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Topics: Engineering simulation, Graphics processing units, Heat, Mixed convection, Simulation, Cavities, Thermofluids, Computation, Computer programming languages, Computer simulation

Journal Articles

A New Closure Strategy for Proper Orthogonal Decomposition Reduced-Order Models

Imran Akhtar, Zhu Wang, Jeff Borggaard, Traian Iliescu

J. Comput. Nonlinear Dynam. July 2012, 7(3): 034503.

DOI: https://doi.org/10.1115/1.4005928

Published Online: April 4, 2012

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Topics: Eddies (Fluid dynamics), Modeling, Principal component analysis, Viscosity, Jacobian matrices, Turbulence

Journal Articles

Model Based Control of Laminar Wake Using Fluidic Actuation

Imran Akhtar, Ali H. Nayfeh

J. Comput. Nonlinear Dynam. October 2010, 5(4): 041015.

DOI: https://doi.org/10.1115/1.4002085

Published Online: August 20, 2010

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Topics: Actuators, Computational fluid dynamics, Cylinders, Design, Flow (Dynamics), Pole placement, Simulation, Suction, Wakes, Pressure

Journal citation

NARROW

Nusselt Number Dependence on Aspect Ratio and Rayleigh Number: A Numerical Study of Rayleigh-Benard Instability

Numerical Analysis to Study the Effect of Control Temperature Location Inside a Datacenter

Computational Modeling of Inertial Effects on Electromechanics of the Heart

Micropower Generation Using Cross-Flow Instabilities: A Review of the Literature and Its Implications

Experimental and Numerical Investigation of Vibration Damping Using a Thin Layer Coating

Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils

Three Dimensional Flow Investigation in One and a Half Stage Axial Turbine

Thermal Modeling and Design Analysis of a Hybrid Microdevice for Continuous-Flow PCR Using One Heater

Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils

Nonlinear Characterization of Heart Rate Variability in Normal Sinus Rhythm, Atrial Fibrillation and Congestive Heart Failure

Reduced-Order Modeling of Torque on a Vertical-Axis Wind Turbine at Varying Tip Speed Ratios

Effect of Varying Diameter of Dental Implants During Placements in Compromised Bony Ridges at Different Insertion Torques: A Finite Element Study

Pumping Speed Measurement of the Rotary Vane Vacuum Pump by Using Numerical and Experimental Approaches

Numerical Study to Analyze the Effects of Hot/Cold Aisle Configurations on Heat Transfer Phenomenon in a Data Center

Vibratory Stress Suppression in Turbine Blades Subjected to Aerodynamic Loading

Numerical Study to Quantify the Effects of Struts and Central Hub on the Performance of a Three Dimensional Vertical Axis Wind Turbine Using Sliding Mesh

Characteristics of Flow Past a Symmetric Airfoil at Low Reynolds Number: A Nonlinear Perspective

GPU-Based Simulations to Analyze the Effect of Heat Source in Mixed Convection

A New Closure Strategy for Proper Orthogonal Decomposition Reduced-Order Models

Model Based Control of Laminar Wake Using Fluidic Actuation

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