Results 1 to 10 of about 400,459 (144)

Numerical simulation of supersonic gap flow. [PDF]

open access: yesPLoS ONE, 2015
Various gaps in the surface of the supersonic aircraft have a significant effect on airflows. In order to predict the effects of attack angle, Mach number and width-to-depth ratio of gap on the local aerodynamic heating environment of supersonic flow ...
Xu Jing   +3 more
doaj   +5 more sources

Transitional vortices in wide-gap spherical annulus flow [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We develop a semianalytic formulation suitable for solving the Navier‐Stokes equations governing the induced steady, axially symmetric motion of an incompressible viscous fluid confined in a wide gap between two differentially rotating concentric spheres.
E. O. Ifidon
doaj   +2 more sources

NUMERICAL SIMULATIONS OF GAP FLOW ABOVE ROTATING DISK

open access: yesTASK Quarterly, 2015
A rotating disk can be considered a basic configuration for the investigations of the impact of various conditions on the flow through the clearance between the shrouded turbine blade and the casing.
FILIP WASILCZUK   +2 more
doaj   +2 more sources

Influences of Gap Flow on Air Resistance Acting on a Large Container Ship

open access: yesJournal of Marine Science and Engineering, 2023
In terms of speed lost and fuel consumed, wind loads are considered one of the main factors for large ship design, especially for container ships. Alongside water resistance, air resistance in strong wind conditions has a significant impact on the fuel ...
Van Trieu Nguyen   +4 more
doaj   +1 more source

Experimental study of controlling tip clearance flow in a pump-jet propulsor

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectiveThis paper aims to suppress the adverse effects of tip clearance flow on the hydrodynamic performance and unsteady excitation force of a pump-jet propulsor. MethodAs for the pre-swirl stator pump-jet propulsor, an annular flexible seal structure
Ruilin HAN   +5 more
doaj   +1 more source

A climatology of wintertime low-level jets in Nares Strait

open access: yesPolar Research, 2021
Intense, southward low-level winds are common in Nares Strait, between Ellesmere Island and northern Greenland. The steep topography along Nares Strait leads to channelling effects, resulting in an along-strait flow.
Svenja H.E. Kohnemann   +1 more
doaj   +1 more source

Unstable inner cylinder whirl of concentric double rotating cylinder system

open access: yesMechanical Engineering Journal, 2022
This research investigated unstable inner cylinder whirl in a double rotating cylinder system in which the axis of the inner cylinder is supported elastically in the radial direction and the axis of the outer cylinder is fixed.
Fumitaka YOSHIZUMI, Masanori IRITANI
doaj   +1 more source

Hydrodynamic performance of a rim-driven thruster improved with gap geometry adjustment

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
The hubless rim-driven thruster (RDT) has become increasingly interesting for ship propulsion. Gap flow has been proven as the main feature of RDT that cannot be simply neglected.
Jianfeng Lin   +4 more
doaj   +1 more source

Unstable outer cylinder whirl of concentric double rotating cylinder system

open access: yesMechanical Engineering Journal, 2023
This research investigates unstable outer cylinder whirl in a double rotating cylinder system, with both co- and counter-rotation, in which the axis of the outer cylinder is supported elastically in the radial direction and the axis of the inner cylinder
Fumitaka YOSHIZUMI, Masanori IRITANI
doaj   +1 more source

Numerical Study of the Microflow Characteristics in a V-ball Valve

open access: yesMicromachines, 2021
V-ball valves are widely applied in many process industries to regulate fluid flow, and they have advantages of good approximately equal percentage flow characteristics and easy maintenance.
Zhi-xin Gao   +5 more
doaj   +1 more source

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