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Ahmad Nourbakhsh
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Journal Articles

Numerical Investigation of the Pressure-Time Method Considering Pipe With Variable Cross Section

Simindokht Saemi, Mehrdad Raisee, Michel J. Cervantes, Ahmad Nourbakhsh
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2018, 140(10): 101401.
Paper No: FE-17-1320
https://doi.org/10.1115/1.4040718
Published Online: August 6, 2018
View Article titled, Numerical Investigation of the Pressure-Time Method Considering Pipe With Variable Cross Section
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Topics: Flow (Dynamics), Pipes, Pressure, Turbulence, Simulation, Valves, Friction, Shear stress
Journal Articles

Numerical Investigation of Back Vane Design and Its Impact on Pump Performance

Farzam Mortazavi, Alireza Riasi, Ahmad Nourbakhsh
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2017, 139(12): 121104.
Paper No: FE-17-1196
https://doi.org/10.1115/1.4037281
Published Online: September 1, 2017
View Article titled, Numerical Investigation of Back Vane Design and Its Impact on Pump Performance
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Topics: Design, Flow (Dynamics), Impellers, Pumps, Thrust, Clearances (Engineering), Computational fluid dynamics
Journal Articles

The Effects of Inflow Uncertainties on the Characteristics of Developing Turbulent Flow in Rectangular Pipe and Asymmetric Diffuser

Saeed Salehi, Mehrdad Raisee, Michel J. Cervantes, Ahmad Nourbakhsh
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2017, 139(4): 041402.
Paper No: FE-16-1151
https://doi.org/10.1115/1.4035302
Published Online: February 20, 2017
View Article titled, The Effects of Inflow Uncertainties on the Characteristics of Developing Turbulent Flow in Rectangular Pipe and Asymmetric Diffuser
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Topics: Chaos, Diffusers, Inflow, Polynomials, Turbulence, Uncertainty, Computational fluid dynamics, Flow (Dynamics), Computation, Uncertainty quantification
Journal Articles

Effects of Volute Curvature on Performance of a Low Specific-Speed Centrifugal Pump at Design and Off-Design Conditions

Hamed Alemi, Seyyed Ahmad Nourbakhsh, Mehrdad Raisee, Amir Farhad Najafi
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. April 2015, 137(4): 041009.
Paper No: TURBO-13-1266
https://doi.org/10.1115/1.4028766
Published Online: April 1, 2015
View Article titled, Effects of Volute Curvature on Performance of a Low Specific-Speed Centrifugal Pump at Design and Off-Design Conditions
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Topics: Design, Pumps, Shapes, Turbulence, Diffusers, Flow (Dynamics), Centrifugal pumps, Geometry
Proceedings Papers

Hydrodynamic Design of the Volute of a Centrifugal Pump Using CFD

Rouhollah Torabi, S. Ahmad Nourbakhsh
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 423-427, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-06077
https://doi.org/10.1115/AJK2011-06077
View Paper titled, Hydrodynamic Design of the Volute of a Centrifugal Pump Using CFD
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Topics: Centrifugal pumps, Computational fluid dynamics, Design, Geometry, Design methodology, Pressure, Pumps, Shapes, Viscous flow
Proceedings Papers

Influence of Surge Tank and Relief Valve on Transient Flow Behaviour in Hydropower Stations

Alireza Riasi, Ahmad Nourbakhsh
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 1971-1977, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-07034
https://doi.org/10.1115/AJK2011-07034
View Paper titled, Influence of Surge Tank and Relief Valve on Transient Flow Behaviour in Hydropower Stations
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Topics: Hydroelectric power stations, Relief valves, Surges, Unsteady flow, Power stations, Pressure, Boundary-value problems, Control systems, Friction, Governors
Proceedings Papers

Modeling of Electroosmotic Nanoflows With Overlapped Double Layer

Reza Nosrati, Mehrdad Raisee, Ahmad Nourbakhsh
Proc. ASME. ICNMM2011, ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2, 265-276, June 19–22, 2011
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2011-58087
https://doi.org/10.1115/ICNMM2011-58087
View Paper titled, Modeling of Electroosmotic Nanoflows With Overlapped Double Layer
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Topics: Approximation, Electroosmosis, Finite volume methods, Flow (Dynamics), Modeling, Nanoscale phenomena, Transport phenomena
Journal Articles

Unsteady Velocity Profiles in Laminar and Turbulent Water Hammer Flows

Alireza Riasi, Ahmad Nourbakhsh, Mehrdad Raisee
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. December 2009, 131(12): 121202.
https://doi.org/10.1115/1.4000557
Published Online: November 19, 2009
View Article titled, Unsteady Velocity Profiles in Laminar and Turbulent Water Hammer Flows
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Topics: Flow (Dynamics), Pipes, Turbulence, Water hammer, Pipe flow
Journal Articles

Efficiency Improvement of Centrifugal Reverse Pumps

Shahram Derakhshan, Bijan Mohammadi, Ahmad Nourbakhsh
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. February 2009, 131(2): 021103.
https://doi.org/10.1115/1.3059700
Published Online: January 15, 2009
View Article titled, Efficiency Improvement of Centrifugal Reverse Pumps
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Topics: Blades, Impellers, Optimization, Pumps, Shapes, Turbines, Flow (Dynamics)
Proceedings Papers

Computer-Aided Analysis of Free Transverse-Vibration of Stepped Beams

Kazem Abhary, Ahmad Nourbakhsh
Proc. ASME. IDETC-CIE2002, Volume 2: 28th Design Automation Conference, 175-180, September 29–October 2, 2002
Publisher: American Society of Mechanical Engineers
Paper No: DETC2002/DAC-34054
https://doi.org/10.1115/DETC2002/DAC-34054
View Paper titled, Computer-Aided Analysis of Free Transverse-Vibration of Stepped Beams
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Topics: Computer-aided engineering, Vibration, Arches, Algorithms, Boundary-value problems, Shear (Mechanics)