Results 241 to 250 of about 32,232 (297)

Magnesium Administration in Preslaughter Drinking Water Reduces Spinal Fractures in Pigs during Stunning. [PDF]

ACS Omega
Gabriel RVC, Filho WSF, de Sousa AVG, Degane GG, do Amaral AB, Guimarães EC, Bueno JPR, Antunes RC.   +7 more
europepmc   +1 more source

Real-time rotational speed control and EEDI reduction research of rotor sail via high-Re aerodynamics and power Rose graph. [PDF]

Sci Rep
Lin H, Sun C, Li J, Li X.
europepmc   +1 more source

Turbulence model study for aerodynamic analysis of the leading edge tubercle wing for low Reynolds number flows. [PDF]

Heliyon
Ali I, Hussain T, Unar IN, Kumar L, Ahad IU.   +4 more
europepmc   +1 more source

Interrogating a single light-driven rotary molecular motor with force

Duwez A, Ledent M, Gisbert Y, Sluysmans D, Astumian R, Feringa B.   +5 more
europepmc   +1 more source

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Influence of Rotation on Dynamic Stall

Journal of the American Helicopter Society, 2013
A computational investigation of the effect of rotation on two-dimensional (2D) deep dynamic stall has been undertaken, showing that the effect of rotation is to reduce the severity of the pitching moment peak and cause earlier reattachment of the flow. A generic single blade rotor geometry was investigated, which had a pitching oscillation around the
Gardner, Anthony Donald, Richter, Kai
openaire   +3 more sources

Modeling for control of rotating stall

Automatica, 1994
Abstract An analytical model for control of rotating stall has been obtained from the basic fluid equations describing the process at inception. The model describes rotating stall as a traveling wave packet, sensed—in spatial components—via the Fourier decomposition of measurements obtained from a circumferential array of evenly distributed sensors ...
James D. Paduano, Lena S. Valavani, A. H. Epstein, Edward M. Greitzer, G. R. Guenette   +4 more
openaire   +1 more source

A theory for rotating stall in contra-rotating fans

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2020
This paper reports on a theory of rotating stall in contra-rotating fans and compressors. The theory is developed from Moore’s theory. A second-order hysteresis is used in the current study for the pressure rise of the counter-rotating rows. This enables the model to predict the transient behavior of the stall cell.
Hossein Khaleghi, Mohammad Javad Shahriyari, Martin Heinrich   +2 more
openaire   +1 more source

High performance computing of compressor rotating stall and stall control

Integrated Computer-Aided Engineering, 2009
The performance of gas turbine engines is limited by compressor stall. Stall control technologies developed recently have demonstrated the effectiveness of steady tip injection to increase the stable operating range of high-speed axial and centrifugal compressors.
Jen-Ping Chen, Robert S. Webster, Michael D. Hathaway, Gregory P. Herrick, Gary J. Skoch   +4 more
openaire   +1 more source

STABILITY ANALYSIS AND CONTROL OF ROTATING STALL

IFAC Proceedings Volumes, 1992
Issues of stability and control of rotating stall in axial flow compressor dynamics are considered. A stationary bifurcation analysis of compression system near the stall point is obtained, which shows that the stability of system can be predicted from either of two mathematical models of system, regarding the choice of state variables.
Der-Cherng Liaw, E.H. Abed
openaire   +1 more source

Criteria for Spike Initiated Rotating Stall

Volume 6: Turbo Expo 2005, Parts A and B, 2005
A computational study to define the phenomena that lead to the onset of short length-scale (spike) rotating stall disturbances has been carried out. Unsteady simulations show there are two conditions necessary for the formation of spike disturbances, both of which are linked to the tip clearance flow. One is that the interface between the tip clearance
Huu Duc Vo, Choon S. Tan, Edward M. Greitzer   +2 more
openaire   +2 more sources