Results 21 to 30 of about 182,384 (314)

Natural convection and the evolution of a reactive porous medium [PDF]

, 2011
We describe a mathematical model of buoyancy-driven flow and solute transport in a saturated porous medium, the porosity and permeability of which evolve through precipitation and dissolution as a mineral is lost or gained from the pore fluid. Imposing a
DAVID PRITCHARD, LINDSEY T. RITCHIE, Ritchie, Lindsey Thomson, Pritchard, David   +3 more
core   +1 more source

Soil moisture, wind speed and depth hoar formation in the Arctic snowpack

Journal of Glaciology, 2018
Basal depth hoar that forms in Arctic snowpacks often has a low thermal conductivity, strongly contributing to the snowpack thermal insulance and impacting the permafrost thermal regime. At Ward Hunt Island (Canadian high Arctic, 83°05′N, 74°07′W) almost
FLORENT DOMINE, MARIA BELKE-BREA, DENIS SARRAZIN, LAURENT ARNAUD, MATHIEU BARRERE, MATHILDE POIRIER   +5 more
doaj   +1 more source

Granular Convection in Microgravity [PDF]

Physical Review Letters, 2013
We investigate the role of gravity on convection in a dense granular shear flow. Using a microgravity modified Taylor-Couette shear cell under the conditions of parabolic flight microgravity, we demonstrate experimentally that secondary, convective-like flows in a sheared granular material are close to zero in microgravity and enhanced under high ...
Murdoch, N., Rozitis, B., Nordstrom, K., Green, S. F., Michel, P., de Lophem, T.-L., Losert, W.   +6 more
openaire   +6 more sources

Thermal vibrational convection in near-critical fluids. Part 1. Non-uniform heating [PDF]

, 2006
A theoretical model describing the response of a single-phase near-critical fluid to small-amplitude, high-frequency translational vibrations is developed on the basis of the multiple-scale and averaging methods.
Vorobev, Anatoliy, Lyubimov, Dimitry, Mojtabi, Abdelkader, Zappoli, Bernard, Lyubimova, T., Vorobev, A., Lyubimov, D., Lyubimova, Tanya, Mojtabi, A., Zappoli, B.   +9 more
core   +1 more source

CUTLASS/IMAGE observations of high latitude convection features during substorms [PDF]

, 1997
International audienceThe CUTLASS Finland HF radar has been operational since February 1995. The radar frequently observes backscatter during the midnight sector from a latitude range 70?75° geographic, latitudes often associated with the polar cap ...
T.K Yeoman, T. K. Yeoman, H Lühr, H. Lühr (7615595), Lühr, H., H. Lühr, Yeoman, T. K., Yeoman, T.K., T. K. Yeoman (7601525)   +8 more
core   +1 more source

Thermal vibrational convection in near-critical fluids. Part 2. Weakly non-uniform heating [PDF]

, 2006
The governing equations and effective boundary conditions to describe thermal vibrational convection in a near-critical fluid are derived with the help of the multiple-scale method and averaging procedure. In contrast to Part 1, this paper focuses on the
Vorobev, Anatoliy, Lyubimov, Dimitry, Mojtabi, Abdelkader, Zappoli, Bernard, Lyubimova, T., Vorobev, A., Lyubimov, D., Lyubimova, Tanya, Mojtabi, A., Zappoli, B.   +9 more
core   +1 more source

Investigating the initiation and propagation processes of convection in heavy precipitation over the western Sichuan Basin

Atmospheric and Oceanic Science Letters, 2017
Heavy precipitation events occur often over the western Sichuan Basin in summer, near the transition zone between the Sichuan Basin and the steep terrain of the Tibetan Plateau. One such event — a heavy precipitation process that occurred on 18–20 August
Qin LI, Shuai YANG, Xiao-Peng CUI, Shou-Ting GAO   +3 more
doaj   +1 more source

Large-scale adaptive mantle convection simulation [PDF]

A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency
Wilcox, Lucas C., Gurnis, Michael, Ghattas, Omar, Burstedde, Carsten, Tan, Eh, Alisic, Laura, Stadler, Georg   +6 more
core   +1 more source

Three-dimensional spatially localized binary-fluid convection in a porous medium [PDF]

, 2013
Three-dimensional convection in a binary mixture in a porous medium heated from below is studied. For negative separation ratios steady spatially localized convection patterns are expected.
Bergeon, Alain, Knobloch, Edgar, Lo Jacono, David   +2 more
core   +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