Results 41 to 50 of about 980,176 (374)

Criterios para el inicio de la convección y la formación de estructuras coherentes sobre Camagüey, Cuba Criteria for the onset of convection and the formation of coherent structures over Camaguey, Cuba

Revista Brasileira de Meteorologia, 2011
São apresentados os resultados de uma investigação sobre o processo de convecção de Rayleigh - Bénard partindo do cálculo dos números adimensionais de Rayleigh (Ra) e de Richardson (Ri), com o objetivo de encontrar critérios que sejam representativos do ...
Nivian Quintana Rodríguez, Maibys Sierra Lorenzo, Mario Carnesoltas Calvo   +2 more
doaj   +1 more source

Onset of thermal convection in a horizontal layer of granular gas

, 2002
The Navier-Stokes granular hydrodynamics is employed for determining the threshold of thermal convection in an infinite horizontal layer of granular gas.
Baruch Meerson, E. Bodenschatz, E. Khain, E. Livne, E. Livne, E.A. Spiegel, E.L. Grossman, Evgeniy Khain, J. Talbot, J. Talbot, J.J. Brey, J.J. Brey, J.T. Jenkins, M. Argentina, M. Gitterman, M.C. Cross, M.S. Gitterman, M.S. Gitterman, P. Carlès, P. Sunthar, R. Ramìrez, R.D. Wildman, S.E. Esipov, X. He, X. He   +24 more
core   +1 more source

Role of defects in the onset of wall-induced granular convection [PDF]

, 2015
We investigate the onset of the wall-induced convection in vertically vibrated granular matter by means of experiments and two-dimensional computer simulations.
Fortini, Andrea, Huang, Kai
core   +2 more sources

Plumes in stellar convection zones [PDF]

, 1999
All numerical simulations of compressible convection reveal the presence of strong downwards directed flows. Thanks to helioseismology, such plumes have now been detected also at the top of the solar convection zone, on super- granular scales.
Adrian, Blöcker, Brandenburg, Brown, Brummell, Cattaneo, D'Silva, Freytag, Hurlburt, Hurlburt, Kosovichev, Kumar, Kumar, Lo, Morton, Muthsam, Nordlund, Rieutord, Roxburgh, Schmitt, Singh, Spruit, Stein, Stein, Tobias, Toomre, Townsend, Turner, Zahn, Zahn   +29 more
core   +3 more sources

A review on regional convection‐permitting climate modeling: Demonstrations, prospects, and challenges

Reviews of Geophysics, 2015
Regional climate modeling using convection‐permitting models (CPMs; horizontal grid spacing 10 km). CPMs no longer rely on convection parameterization schemes, which had been identified as a major source of errors and uncertainties in LSMs.
A. Prein, W. Langhans, G. Fosser, A. Ferrone, N. Ban, K. Goergen, Michael Keller, M. Tölle, O. Gutjahr, F. Feser, E. Brisson, S. Kollet, J. Schmidli, N. V. van Lipzig, R. Leung   +14 more
semanticscholar   +1 more source

Heat transfer and large scale dynamics in turbulent Rayleigh-Bénard convection [PDF]

, 2008
The progress in our understanding of several aspects of turbulent Rayleigh-Benard convection is reviewed. The focus is on the question of how the Nusselt number and the Reynolds number depend on the Rayleigh number Ra and the Prandtl number Pr, and on ...
G. Ahlers, S. Grossmann, D. Lohse
semanticscholar   +1 more source

convection initiation

Journal of Applied Research in Geographical Sciences
The structure of deep moist convection can be influenced by various factors, including wind shear, available potential energy of convection, relative humidity, and vertical distribution of these variables. Among these factors, wind shear plays a more significant role in the creation of convection.
Zahra Ghassabi, Hoshang Ghaemi, Ebrahim Mirzaei   +2 more
openaire   +2 more sources

Multiple Equilibria in a Single-Column Model of the Tropical Atmosphere

, 2007
A single-column model run under the weak temperature gradient approximation, a parameterization of large-scale dynamics appropriate for the tropical atmosphere, is shown to have multiple stable equilibria.
A. H. Sobel, Bergman, Biasutti, Bretherton, Derbyshire, G. Bellon, J. Bacmeister, Khouider, Kuang, Kuang, Mapes, Neelin, Neggers, Nilsson, Raymond, Raymond, Rennó, Sobel, Sobel, Wang, Zeng, Zhang   +21 more
core   +1 more source

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

Advanced Engineering Materials, EarlyView.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan, Manjusri Misra, Alexander Bardelcik, Stefano Gregori, Amar K. Mohanty   +4 more
wiley   +1 more source

Double-diffusive convection in a rotating cylindrical annulus with conical caps [PDF]

, 2011
Double-diffusive convection driven by both thermal and compositional buoyancy in a rotating cylindrical annulus with conical caps is considered with the aim to establish whether a small fraction of compositional buoyancy added to the thermal buoyancy (or
Simitev, R. D.
core   +3 more sources