... a significant influence over thrust force generation and propulsion efficiency of the airfoil. e-mail:  masruddin@iitg.ac.in e-mail:  s.m.hazarika@iitg.ac.in fluid dynamics wake pattern pitching airfoil unsteady flow Most of the living species such as birds and insects flap their wings...

... α c , relative to Newtonian fluids. For the unsteady flow, the lift coefficient versus time curve exhibits oscillatory behavior, and this has been used to delineate the flow regime as steady or unsteady flow. For unsteady flow regimes, both the amplitude of the lift coefficient and the Strouhal...

...Fan Zhang; Ke Chen; Desmond Appiah; Shouqi Yuan; Kofi Asamoah Adu-Poku; Feng Hong To investigate the unsteady flow characteristics in side channel pumps, the vortex structures and their evolutions in the impeller and side channel flow passages have been comprehensively studied. Systematically...

... [6] Jia , X. Q. , Zhu , Z. C. , Yu , X. L. , and Zhang , Y. L. , 2019 , “ Internal Unsteady Flow Characteristics of Centrifugal Pump Based on Entropy Generation Rate and Vibration Energy ,” Proc. Inst. Mech. Eng., Part E , 233 ( 3 ), pp. 456 – 473 . 10.1177...

...: A Classification of Flows and Exact Solutions , Cambridge University Press , Cambridge, UK . unsteady flow porous moving surface heat transfer asymptotic solutions Unsteady boundary layer flow is one of the most active research areas in practical fluid mechanics owing to its direct...

... to water turbines for small hydro power. Therefore, in this study, a Weis-Fogh-type water turbine is proposed. Using an advanced vortex method [ 10 , 11 ], which is especially effective in calculating unsteady flow fields around irregular moving objects, its unsteady flow fields and dynamic...

... in the vortex rotor induced vortices is also added to those fluid particles. centrifugal vortex pump coherent structures rotor fluid interaction unsteady flow CFD One way of improving the characteristics of centrifugal pumps is by adding a vortex rotor to the centrifugal rotor by which energy...

... and subvalleys can be found. The effects of unsteady flow in the side chambers on the entire passage flow cannot be neglected for accurately predicting the inner flow of the pump. The results of unsteady pressure fluctuation magnitude can be used to guide the optimum design of the single-blade pump to decrease...

... solution of Reynolds averaged Navier–Stokes (RANS) equations with k-ε turbulence model and good agreement was achieved. New experimental data can be useful for scientific community to validate numerical models. 08 07 2011 15 05 2012 09 08 2012 09 08 2012 dam-break unsteady flow...

... computational fluid dynamics unsteady flow compressible flow SI-engine simulation The usual pulsating flow in the exhaust gas of an automotive power train system causes an unsteady flow at the inlet to the turbocharger turbine. In a four cylinder four stroke engine, the pulse frequency varies...

... 06 2012 25 06 2012 dynamic stall unsteady flow synthetic jet spectral analysis A schematic diagram of the experimental rig is shown in Fig. 2 . Sinusoidal oscillation of the wing about its quarter-chord was achieved using a motor and metal disc-conrod system connected...

... fluid oscillations orifices (mechanical) pipe flow turbulence unsteady flow flow measurement measurement-integrated simulation turbulence model Visualizing the state of plant or engine pipelines is very important in order to ensure safe operation and to diagnose faults. The methods...

... 04 2009 18 09 2009 flow instability flow simulation hydraulic turbines turbulence vortices Kaplan turbine turbulent flow simulation unsteady flow pressure fluctuation prediction Zhang ( 1 ) pointed out that the physical origin of the spontaneous unsteady flow under...

... aerodynamics transportation DES side wind vehicle aerodynamics flow structures unsteady flow A bus in motion experiences different aerodynamic forces and moments. These aerodynamic forces and moments are large when the bus is subjected to a side wind. The natural side wind has a transient...

... flow instability propulsion ships vortices aerodynamics channel flow diffusion drag computational fluid dynamics vortex method propulsion mechanism unsteady flow Subscripts 0 boundary surface b object bs object surface c convective...