Results 1 to 10 of about 1,073 (72)

A thick aerodynamic profile with regions of negative lift slope and possible implications on profiles for wind turbine blades

Wind Energy, Volume 24, Issue 2, Page 162-173, February 2021., 2021
Abstract In the high pressure wind tunnel (HochDruckkanal Goettingen [HDG]) of Deutsch–Niederländische Windkanäle—German–Dutch Wind Tunnels (DNW) a 47% thick airfoil‐like symmetrical profile was investigated at a high (3 to 12 million) Reynolds number. As an unusual feature, a negative lift slope dcL/dα < 0 close to zero lift has been re‐observed under
Alois Peter Schaffarczyk, Chuichi Arakawa   +1 more
wiley   +1 more source

Weak Solutions and Optimal Control of Hemivariational Evolutionary Navier‐Stokes Equations under Rauch Condition

Journal of Function Spaces, Volume 2020, Issue 1, 2020., 2020
In this paper, we consider the evolutionary Navier‐Stokes equations subject to the nonslip boundary condition together with a Clarke subdifferential relation between the dynamic pressure and the normal component of the velocity. Under the Rauch condition, we use the Galerkin approximation method and a weak precompactness criterion to ensure the ...
Hicham Mahdioui, Sultana Ben Aadi, Khalid Akhlil, Yuanfang Ru   +3 more
wiley   +1 more source

Hydromechanics of low-Reynolds-number flow. Part 4. Translation of spheroids [PDF]

, 1976
The problem of a uniform transverse flow past a prolate spheroid of arbitrary aspect ratio at low Reynolds numbers has been analysed by the method of matched asymptotic expansions. The solution is found to depend on two Reynolds numbers, one based on the
Chwang, Allen T., Wu, Theodore Y.
core   +1 more source

Simple Viscous Flows: from Boundary Layers to the Renormalization Group [PDF]

, 2007
The seemingly simple problem of determining the drag on a body moving through a very viscous fluid has, for over 150 years, been a source of theoretical confusion, mathematical paradoxes, and experimental artifacts, primarily arising from the complex ...
Allen, H. S., Arnold, H. D., Barenblatt, G. I., Bender, C. M., Bohlin, T., Bricmont, J., Chen, L., Chen, L., Chester, W., Eaves, L., Faxén, H., Goldenfeld, N. D., Happel, J., Hinch, E. J., John Veysey, Kadanoff, L. P., Kaplun, S., Kaplun, S., Kaplun, S., Lagerstrom, P. A., Lamb, H., Lamb, H., Lan, C., Landau, L., Liebster, H., Liebster, H., Linke, W., Lord Rayleigh, Moise, I., Nigel Goldenfeld, Noether, F., Oono, Y., Oseen, C. W., Oseen, C. W., Schmiedel, J., Shanks, D., Stokes, G. G., Stuckelberg, E., Tomotika, S., Tritton, D., Tritton, D. J., Van Dyke, M., Whitehead, A. N., Wieselsberger, C., Wieselsberger, C., Williams, W. E., Wilson, K., Wilson, K., Woodruff, S. L.   +48 more
core   +2 more sources

The leading effect of fluid inertia on the motion of rigid bodies at low Reynolds number [PDF]

, 2004
We investigate the influence of fluid inertia on the motion of a finite assemblage of solid spherical particles in slowly changing uniform flow at small Reynolds number, Re, and moderate Strouhal number, Sl. We show that the first effect of fluid inertia
Lavrenteva, O. M., Leshansky, A. M., Nir, A.   +2 more
core   +1 more source

The hydrodynamic force on a rigid particle undergoing arbitrary time-dependent motion at small Reynolds number [PDF]

, 1993
The hydrodynamic force acting on a rigid spherical particle translating with arbitrary time-dependent motion in a time-dependent flowing fluid is calculated to O(Re) for small but finite values of the Reynolds number, Re, based on the particle's slip ...
Brady, John F., Lovalenti, Phillip M.
core   +1 more source

Transport of flexible chiral objects in a uniform shear flow [PDF]

, 2012
The transport of slightly deformable chiral objects in a uniform shear flow is investigated. Depending on the equilibrium configuration one finds up to four different asymptotic states that can be distinguished by a lateral drift velocity of their center
de Gennes P G, Dhont J K G, Gert-Ludwig Ingold, Jones E, Miles R E, Peter Hänggi, Peter Talkner, Radhakrishnan K Hindmarsh A C   +7 more
core   +2 more sources

“The joy that engineers and mathematicians have come together.”1

, 2020
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 100, Issue 2, February 2020.
Reinhard Siegmund‐Schultze
wiley   +1 more source

Singularity methods for magnetohydrodynamics

International Journal of Mathematics and Mathematical Sciences, Volume 9, Issue 1, Page 111-122, 1986., 1986
Singular solutions for linearized MHD equations based on Oseen approximations have been obtained such as Oseenslet. Oseenrotlet, mass source, etc. By suitably distributing these singular solutions along the axes of symmetry of an axially symmetric bodies, we derive the approximate values for the velocity fields, the force and the momentum for the case ...
A. D. Alawneh, N. T. Shawagfeh
wiley   +1 more source

WCSPH viscosity diffusion processes in vortex flows [PDF]

, 2012
The aim of this paper is to clarify the role played by the most commonly used viscous terms in simulating viscous laminar flows using the weakly compressible approach in the context of smooth particle hydrodynamics (WCSPH). To achieve this, Takeda et al.
González Gutierrez, Leo Miguel, Macia Lang, Fabricio, Souto Iglesias, Antonio, Sánchez Sánchez, Juan Miguel   +3 more
core   +2 more sources