1-20 of 24
Imran Akhtar
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87897
https://doi.org/10.1115/FEDSM2022-87897
View Paper titled, Nusselt Number Dependence on Aspect Ratio and Rayleigh Number: A Numerical Study of Rayleigh-Benard Instability
Open the PDF for Nusselt Number Dependence on Aspect Ratio and Rayleigh Number: A Numerical Study of Rayleigh-Benard Instability in another window
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
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87885
https://doi.org/10.1115/FEDSM2022-87885
View Paper titled, Numerical Analysis to Study the Effect of Control Temperature Location Inside a Datacenter
Open the PDF for Numerical Analysis to Study the Effect of Control Temperature Location Inside a Datacenter in another window
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
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. October 2019, 14(10): 101006.
Paper No: CND-18-1441
https://doi.org/10.1115/1.4043891
Published Online: September 9, 2019
View Article titled, Computational Modeling of Inertial Effects on Electromechanics of the Heart
Open the PDF for Computational Modeling of Inertial Effects on Electromechanics of the Heart in another window
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
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Review Articles
J. Vib. Acoust. June 2019, 141(3): 030801.
Paper No: VIB-18-1199
https://doi.org/10.1115/1.4042521
Published Online: February 13, 2019
View Article titled, Micropower Generation Using Cross-Flow Instabilities: A Review of the Literature and Its Implications
Open the PDF for Micropower Generation Using Cross-Flow Instabilities: A Review of the Literature and Its Implications in another window
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
Publisher: American Society of Mechanical Engineers
Paper No: POWER-ICOPE2017-3723
https://doi.org/10.1115/POWER-ICOPE2017-3723
View Paper titled, Experimental and Numerical Investigation of Vibration Damping Using a Thin Layer Coating
Open the PDF for Experimental and Numerical Investigation of Vibration Damping Using a Thin Layer Coating in another window
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
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. September 2017, 12(5): 051019.
Paper No: CND-16-1603
https://doi.org/10.1115/1.4036346
Published Online: May 17, 2017
View Article titled, Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils
Open the PDF for Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils in another window
Topics: Airfoils, Computational fluid dynamics, Lift (Fluid dynamics)
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-65594
https://doi.org/10.1115/IMECE2016-65594
View Paper titled, Thermal Modeling and Design Analysis of a Hybrid Microdevice for Continuous-Flow PCR Using One Heater
Open the PDF for Thermal Modeling and Design Analysis of a Hybrid Microdevice for Continuous-Flow PCR Using One Heater in another window
Topics: Design, Flow (Dynamics), Modeling, Microfluidics, Alloys, Temperature distribution, Biomedicine, Boundary-value problems, Chain, Food products
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-66703
https://doi.org/10.1115/IMECE2016-66703
View Paper titled, Three Dimensional Flow Investigation in One and a Half Stage Axial Turbine
Open the PDF for Three Dimensional Flow Investigation in One and a Half Stage Axial Turbine in another window
Topics: Flow (Dynamics), Turbines, Rotors, Stators, Blades, Nozzle guide vanes, Wakes, Cascades (Fluid dynamics), Fluid dynamics, Physics
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-66836
https://doi.org/10.1115/IMECE2016-66836
View Paper titled, Nonlinear Characterization of Heart Rate Variability in Normal Sinus Rhythm, Atrial Fibrillation and Congestive Heart Failure
Open the PDF for Nonlinear Characterization of Heart Rate Variability in Normal Sinus Rhythm, Atrial Fibrillation and Congestive Heart Failure in another window
Topics: Heart failure, Cardiovascular system, Dynamics (Mechanics), Physiology, Time series, Algorithms, Risk
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-66859
https://doi.org/10.1115/IMECE2016-66859
View Paper titled, Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils
Open the PDF for Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils in another window
Topics: Airfoils, Lift (Fluid dynamics), Computer simulation, Damping, Aerodynamics, Attractors, Computational fluid dynamics, Emission spectroscopy, Excitation, Flow (Dynamics)
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
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. July 2015, 10(4): 041012.
Paper No: CND-14-1055
https://doi.org/10.1115/1.4028064
Published Online: July 1, 2015
View Article titled, Reduced-Order Modeling of Torque on a Vertical-Axis Wind Turbine at Varying Tip Speed Ratios
Open the PDF for Reduced-Order Modeling of Torque on a Vertical-Axis Wind Turbine at Varying Tip Speed Ratios in another window
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-38388
https://doi.org/10.1115/IMECE2014-38388
View Paper titled, Effect of Varying Diameter of Dental Implants During Placements in Compromised Bony Ridges at Different Insertion Torques: A Finite Element Study
Open the PDF for Effect of Varying Diameter of Dental Implants During Placements in Compromised Bony Ridges at Different Insertion Torques: A Finite Element Study in another window
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-38412
https://doi.org/10.1115/IMECE2014-38412
View Paper titled, Pumping Speed Measurement of the Rotary Vane Vacuum Pump by Using Numerical and Experimental Approaches
Open the PDF for Pumping Speed Measurement of the Rotary Vane Vacuum Pump by Using Numerical and Experimental Approaches in another window
Topics: Experimental methods, Vacuum pumps, Computational fluid dynamics, Pumps, Computer-aided design, Engineering simulation, Flow (Dynamics), Internal flow, Knudsen number, Modeling
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-63724
https://doi.org/10.1115/IMECE2013-63724
View Paper titled, Vibratory Stress Suppression in Turbine Blades Subjected to Aerodynamic Loading
Open the PDF for Vibratory Stress Suppression in Turbine Blades Subjected to Aerodynamic Loading in another window
Topics: Coatings, Stress, Turbine blades
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-64457
https://doi.org/10.1115/IMECE2013-64457
View Paper titled, Numerical Study to Analyze the Effects of Hot/Cold Aisle Configurations on Heat Transfer Phenomenon in a Data Center
Open the PDF for Numerical Study to Analyze the Effects of Hot/Cold Aisle Configurations on Heat Transfer Phenomenon in a Data Center in another window
Topics: Data centers, Heat transfer
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
Publisher: American Society of Mechanical Engineers
Paper No: POWER2013-98300
https://doi.org/10.1115/POWER2013-98300
View Paper titled, 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
Open the PDF for 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 in another window
Topics: Vertical axis wind turbines, Blades, Computational fluid dynamics, Manufacturing, Cities, Computer simulation, Computer software, Drag (Fluid dynamics), Roofs, Torque
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-85850
https://doi.org/10.1115/IMECE2012-85850
View Paper titled, GPU-Based Simulations to Analyze the Effect of Heat Source in Mixed Convection
Open the PDF for GPU-Based Simulations to Analyze the Effect of Heat Source in Mixed Convection in another window
Topics: Engineering simulation, Graphics processing units, Heat, Mixed convection, Simulation, Cavities, Thermofluids, Computation, Computer programming languages, Computer simulation
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
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-87389
https://doi.org/10.1115/IMECE2012-87389
View Paper titled, Characteristics of Flow Past a Symmetric Airfoil at Low Reynolds Number: A Nonlinear Perspective
Open the PDF for Characteristics of Flow Past a Symmetric Airfoil at Low Reynolds Number: A Nonlinear Perspective in another window
Topics: Airfoils, Flow (Dynamics), Reynolds number, Aerodynamics, Chaos, Fluid-dynamic forces, Bifurcation, Computer simulation, Drag (Fluid dynamics), Emission spectroscopy
Journal Articles

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

Imran Akhtar, Zhu Wang, Jeff Borggaard, Traian Iliescu
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Technical Briefs
J. Comput. Nonlinear Dynam. July 2012, 7(3): 034503.
https://doi.org/10.1115/1.4005928
Published Online: April 4, 2012
View Article titled, A New Closure Strategy for Proper Orthogonal Decomposition Reduced-Order Models
Open the PDF for A New Closure Strategy for Proper Orthogonal Decomposition Reduced-Order Models in another window
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
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research Papers
J. Comput. Nonlinear Dynam. October 2010, 5(4): 041015.
https://doi.org/10.1115/1.4002085
Published Online: August 20, 2010
View Article titled, Model Based Control of Laminar Wake Using Fluidic Actuation
Open the PDF for Model Based Control of Laminar Wake Using Fluidic Actuation in another window
Topics: Actuators, Computational fluid dynamics, Cylinders, Design, Flow (Dynamics), Pole placement, Simulation, Suction, Wakes, Pressure