Author: Nader Samir Berchane
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The pressure distributions and forces presented in a thesis by Hossain [1] for a centrifugal pump illustrated a somewhat complex inter-relationship between various geometric and operating parameters of the pump studied. The pump had an open faced impeller of 33.65 cm diameter with 5 blades of backswept design. It was felt that the best way to resolve some of the questions related to Hossain's results was to determine the fluid velocity field inside the pump. Thus the flow field through the impeller passages was measured using a 1-D Laser Doppler Velocimetry (LDV) system. The LDV was used to measure the radial and tangential velocity components as well as the turbulence intensities over the region accessible through the two optical windows in the front of the pump housing. Five axial planes were investigated by recording measurements along two radial lines at azimuthal angles of 45 0 and 315 0 (with respect to the horizontal axis of the pump) for design operating conditions. A once per revolution signal was used to supply the LDV system with a reference for the rotor position. It was found out that a leakage flow existed near the front wall of the impeller at z/h = 0.11, which was generated by the pressure difference between the impeller exit and inlet. It was also concluded that the velocity field was not fully two-dimensional in nature. This was believed to be a result of the 90 0 turn that the fluid endures as it enters the impeller inlet from the suction pipe.
Experimental Evaluation of the Flow Field Inside an Open Faced Impeller
Author: Nader Samir Berchane
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The pressure distributions and forces presented in a thesis by Hossain [1] for a centrifugal pump illustrated a somewhat complex inter-relationship between various geometric and operating parameters of the pump studied. The pump had an open faced impeller of 33.65 cm diameter with 5 blades of backswept design. It was felt that the best way to resolve some of the questions related to Hossain's results was to determine the fluid velocity field inside the pump. Thus the flow field through the impeller passages was measured using a 1-D Laser Doppler Velocimetry (LDV) system. The LDV was used to measure the radial and tangential velocity components as well as the turbulence intensities over the region accessible through the two optical windows in the front of the pump housing. Five axial planes were investigated by recording measurements along two radial lines at azimuthal angles of 45 0 and 315 0 (with respect to the horizontal axis of the pump) for design operating conditions. A once per revolution signal was used to supply the LDV system with a reference for the rotor position. It was found out that a leakage flow existed near the front wall of the impeller at z/h = 0.11, which was generated by the pressure difference between the impeller exit and inlet. It was also concluded that the velocity field was not fully two-dimensional in nature. This was believed to be a result of the 90 0 turn that the fluid endures as it enters the impeller inlet from the suction pipe.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The pressure distributions and forces presented in a thesis by Hossain [1] for a centrifugal pump illustrated a somewhat complex inter-relationship between various geometric and operating parameters of the pump studied. The pump had an open faced impeller of 33.65 cm diameter with 5 blades of backswept design. It was felt that the best way to resolve some of the questions related to Hossain's results was to determine the fluid velocity field inside the pump. Thus the flow field through the impeller passages was measured using a 1-D Laser Doppler Velocimetry (LDV) system. The LDV was used to measure the radial and tangential velocity components as well as the turbulence intensities over the region accessible through the two optical windows in the front of the pump housing. Five axial planes were investigated by recording measurements along two radial lines at azimuthal angles of 45 0 and 315 0 (with respect to the horizontal axis of the pump) for design operating conditions. A once per revolution signal was used to supply the LDV system with a reference for the rotor position. It was found out that a leakage flow existed near the front wall of the impeller at z/h = 0.11, which was generated by the pressure difference between the impeller exit and inlet. It was also concluded that the velocity field was not fully two-dimensional in nature. This was believed to be a result of the 90 0 turn that the fluid endures as it enters the impeller inlet from the suction pipe.
Proceedings of the ASME Fluids Engineering Division Summer Meeting
Author: American Society of Mechanical Engineers. Fluids Engineering Division. Summer Meeting
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 828
Book Description
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 828
Book Description
Experimental Investigations of Flow Fields in Vessel Agitated by Pitched Blade Impeller
Author: Kanlaya Kunathip
Publisher:
ISBN:
Category : Impellers
Languages : en
Pages : 141
Book Description
Publisher:
ISBN:
Category : Impellers
Languages : en
Pages : 141
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 488
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 488
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Applied Mechanics Reviews
Design, Simulation and Optimization of Hydraulic Machinery
Author: Ling Zhou
Publisher: Frontiers Media SA
ISBN: 2889765695
Category : Technology & Engineering
Languages : en
Pages : 299
Book Description
Publisher: Frontiers Media SA
ISBN: 2889765695
Category : Technology & Engineering
Languages : en
Pages : 299
Book Description
NASA SP.
Journal of Fluids Engineering
Hydrodynamics of Pumps
Author: Christopher E. Brennen
Publisher: Cambridge University Press
ISBN: 1139497278
Category : Technology & Engineering
Languages : en
Pages : 287
Book Description
Hydrodynamics of Pumps is a reference for pump experts and a textbook for advanced students. It examines the fluid dynamics of liquid turbomachines, particularly pumps, focusing on special problems and design issues associated with the flow of liquid through a rotating machine. There are two characteristics of a liquid that lead to problems and cause a significantly different set of concerns than those in gas turbines. These are the potential for cavitation and the high density of liquids, which enhances the possibility of damaging, unsteady flows and forces. The book begins with an introduction to the subject, including cavitation, unsteady flows and turbomachinery, basic pump design and performance principles. Chapter topics include flow features, cavitation parameters and inception, bubble dynamics, cavitation effects on pump performance, and unsteady flows and vibration in pumps - discussed in the three final chapters. The book is richly illustrated and includes many practical examples.
Publisher: Cambridge University Press
ISBN: 1139497278
Category : Technology & Engineering
Languages : en
Pages : 287
Book Description
Hydrodynamics of Pumps is a reference for pump experts and a textbook for advanced students. It examines the fluid dynamics of liquid turbomachines, particularly pumps, focusing on special problems and design issues associated with the flow of liquid through a rotating machine. There are two characteristics of a liquid that lead to problems and cause a significantly different set of concerns than those in gas turbines. These are the potential for cavitation and the high density of liquids, which enhances the possibility of damaging, unsteady flows and forces. The book begins with an introduction to the subject, including cavitation, unsteady flows and turbomachinery, basic pump design and performance principles. Chapter topics include flow features, cavitation parameters and inception, bubble dynamics, cavitation effects on pump performance, and unsteady flows and vibration in pumps - discussed in the three final chapters. The book is richly illustrated and includes many practical examples.
Innovating the Future Through Manufacturing
Author: Vivekanandu Shanmuganathan
Publisher: Alpha Science Int'l Ltd.
ISBN: 9788173196805
Category : Business & Economics
Languages : en
Pages : 1038
Book Description
Attempts to provide a holistic view of the changing scenario and current research trends in manufacturing. This volume can provide the necessary information to all researchers, professionals and beginners alike in introducing innovating manufacturing practices and furthering research on newer and improved manufacturing technologies.
Publisher: Alpha Science Int'l Ltd.
ISBN: 9788173196805
Category : Business & Economics
Languages : en
Pages : 1038
Book Description
Attempts to provide a holistic view of the changing scenario and current research trends in manufacturing. This volume can provide the necessary information to all researchers, professionals and beginners alike in introducing innovating manufacturing practices and furthering research on newer and improved manufacturing technologies.