Results 91 to 100 of about 8,471 (240)

Form and function of anguilliform swimming

Biological Reviews, Volume 99, Issue 6, Page 2190-2210, December 2024.
ABSTRACT Anguilliform swimmers are long and narrow animals that propel themselves by undulating their bodies. Observations in nature and recent investigations suggest that anguilliform swimming is highly efficient. However, understanding the underlying reasons for the efficiency of this type of locomotion requires interdisciplinary studies spanning ...
Vincent Stin, Ramiro Godoy‐Diana, Xavier Bonnet, Anthony Herrel   +3 more
wiley   +1 more source

Experimental Study on the Friction Drag Reduction of Superhydrophobic Surfaces in Closed Channel Flow

Journal of Applied Fluid Mechanics, 2019
Due to the importance of copper and its alloys in marine applications, the main objective of this research is to provide a simple, effective and low cost manufacturing approach to fabricate a superhydrophobic riblet copper surface with high drag ...
M. Monfared, M. A. Alidoostan, B. Saranjam   +2 more
doaj  

Passive laminar flow control of crossflow vorticity [PDF]

A passive laminar flow crossflow vorticity control system includes an aerodynamic or hydrodynamic surface having geometric perturbations. The perturbations include peaks and valleys having a predetermined spacing and aligned approximately in a streamline
Holmes, Bruce J.
core   +1 more source

Wind Tunnel Tests of a Thick Wind Turbine Airfoil

Wind Energy, Volume 27, Issue 10, Page 994-1010, October 2024.
ABSTRACT This article reports about a wind‐tunnel experiment carried out in the ONERA F2 low‐speed wind tunnel on a model of the DU 97‐W‐300Mod airfoil designed for wind turbine application. The wind tunnel, the airfoil model, and experimental techniques used are presented, with special emphasis on the data processing and corrections required to derive
Sylvain Mouton, Alois Peter Schaffarczyk, Nando Timmer   +2 more
wiley   +1 more source

Riblets for aircraft skin-friction reduction [PDF]

Energy conservation and aerodynamic efficiency are the driving forces behind research into methods to reduce turbulent skin friction drag on aircraft fuselages.
Walsh, Michael J.
core   +1 more source

Examination of the wall law based on determining virtual origins over riblets in a turbulent boundary layer

Nihon Kikai Gakkai ronbunshu
Experimental investigations in a wind tunnel facility have been made over riblets and smooth surfaces at moderate Reynolds numbers under zero pressure gradient.
Takuto NONOMIYA, Monami SASAMORI, Shinsuke MOCHIZUKI   +2 more
doaj   +1 more source

Wall turbulence control [PDF]

A variety of wall turbulence control devices which were experimentally investigated are discussed; these include devices for burst control, alteration of outer flow structures, large eddy substitution, increased heat transfer efficiency, and reduction of
Balasubramanian, R., Beeler, George B., Goodman, Wesley L., Lindemann, A. Margrethe, Mcginley, Catherine B., Wilkinson, Stephen P.   +5 more
core   +1 more source

Femtosecond Laser-induced Crystallization of Amorphous Sb2Te3 film and Coherent Phonon Spectroscopy Characterization and Optical Injection of Electron Spins

, 2011
A femtosecond laser-irradiated crystallizing technique is tried to convert amorphous Sb2Te3 film into crystalline film. Sensitive coherent phonon spectroscopy (CPS) is used to monitor the crystallization of amorphous Sb2Te3 film at the original ...
Chen, Ke, Gan, Fuxi, Huang, Huan, Lai, Tianshu, Li, Simian, Wang, Wenfang, Wang, Yang, Wu, Yiqun, Yao, Dao-Xin, Zhu, Weiling   +9 more
core   +1 more source

Polymer/riblet combination for hydrodynamic skin friction reduction [PDF]

A process is disclosed for reducing skin friction and inhibiting the effects of liquid turbulence in a system involving the flow of a liquid along the surface of a body, e.g., a marine vehicle. This process includes injecting a drag reducing polymer into
Bushnell, Dennis M., Reed, Jason C.
core   +1 more source

Excitonic properties of strained wurtzite and zinc-blende GaN/Al(x)Ga(1-x)N quantum dots

, 2003
We investigate exciton states theoretically in strained GaN/AlN quantum dots with wurtzite (WZ) and zinc-blende (ZB) crystal structures, as well as strained WZ GaN/AlGaN quantum dots.
Alexander A. Balandin, Borsella E., Dang L. S., Fonoberov V. A., Pokatilov E. P., Ramval P., Ramval P., Simon J., Vladimir A. Fonoberov   +8 more
core   +1 more source