Results 101 to 110 of about 2,751,374 (249)

Numerical study on drag and lift coefficients of a marine riser at high Reynolds number using COMSOL multiphysics

open access: diamond, 2020
M Faizal Ahmad   +3 more
openalex   +1 more source

Parameterization scheme of the sea surface drag coefficient considering the influence of wave states and sea spray stress

open access: yesFrontiers in Marine Science
The drag coefficient of the sea surface is crucial for the exchange of momentum between the ocean and atmosphere. The wave state significantly influences the variability of the drag coefficient.
Zeqi Zhao   +5 more
doaj   +1 more source

Possibilities for drag reduction by boundary layer control [PDF]

open access: yes
The mechanics of laminar boundary layer transition are reviewed. Drag possibilities for boundary layer control are analyzed using assumed conditions of transition Reynolds number, inlet loss, number of slots, blower efficiency, and duct losses.
Naiman, I.
core   +1 more source

Determination of skin friction on a rotating sphere in magnetic levitation

open access: yesRevista Brasileira de Ensino de Física
A simple and inexpensive experimental procedure is proposed to investigate the skin friction caused by air in a rotating sphere. A device using a magnetic field keeps the sphere levitating.
C. Cena, L.F.S. Guizado, J.V.B. Ferreira
doaj   +1 more source

Wave drag as the objective function in transonic fighter wing optimization [PDF]

open access: yes
The original computational method for determining wave drag in a three dimensional transonic analysis method was replaced by a wave drag formula based on the loss in momentum across an isentropic shock.
Phillips, P. S.
core   +1 more source

Influence of base modifications on in-flight base drag in the presence of jet exhaust for Mach numbers from 0.7 to 1.5 [PDF]

open access: yes
The use of external modifications in the base region to reduce the base drag of a blunt-base body in the presence of jet engine exhaust was investigated in flight.
Powers, Sheryll Goecke
core   +1 more source

Modification to the shading routine in the HREC orbital drag coefficient computer program Final report [PDF]

open access: yes
Shading and pre-shading techniques for modified orbital drag coefficient computer ...
Chrietzberg, J. Y.   +2 more
core   +1 more source

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