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pro vyhledávání: '"T. Zemach"'
Publikováno v:
European Journal of Mechanics - B/Fluids. 97:12-27
Autor:
T. Sokolov, T. Zemach
Publikováno v:
Topical Problems of Fluid Mechanics 2023.
We consider the propagation of gravity currents (GC), through an array of vertical obstacles, called vegetation, along channels of power-law cross-section (CS) shapes. We formulate a model and solve it numerically. Special attention is given to the s
Autor:
Marius Ungarish, T. Zemach
Publikováno v:
European Journal of Mechanics - B/Fluids. 89:83-92
We investigate by theoretical means the motion of a gravity current (GC) released from a lock into an ambient fluid in a horizontal channel of non-rectangular cross-section area (CSA) like triangle, trapezoid or semicircle. The lock contains an inter
Autor:
T. Zemach
Publikováno v:
Environmental Fluid Mechanics. 21:503-517
We consider an inertial (large Reynolds number) gravity current (GC) released from a lock of length $$x_0$$ and height $$h_0$$ into an ambient fluid of height $$Hh_0$$ which propagates along a channel with permeable floor and/or walls. The cross sect
Autor:
T. Zemach
Publikováno v:
European Journal of Mechanics - B/Fluids. 86:210-215
Consider the propagation of a gravity current (GC) sustained by a source of a fluid of density ρ c and constant volume rate Q into an ambient fluid of height H and density ρ a over a permeable bed. The porous layer of a given length Δ x p is locat
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Autor:
T. Zemach, Marius Ungarish
Publikováno v:
European Journal of Mechanics - B/Fluids. 84:122-128
We consider a high-Reynolds-number Boussinesq gravity current propagating in a channel above a permeable horizontal boundary. The current (of reduced gravity g ′ ) is released from a rectangular lock (of length x 0 and height h 0 ), and after an ad
Autor:
T. Zemach, M. Ungarish
Publikováno v:
European Journal of Mechanics - B/Fluids. 97:111
Autor:
T. Zemach
Publikováno v:
European Journal of Mechanics - B/Fluids. 74:312-319
We consider a high-Reynolds particle-driven gravity current (GC) propagating in channel above a horizontal boundary. The bottom and the top of the channel are at z = 0 , H and its cross-section is given by − f ( z ) ≤ y ≤ f ( z ) for 0 ≤ z
Autor:
T. Zemach, Marius Ungarish
Publikováno v:
Journal of Fluid Mechanics. 903
Consider the propagation of a gravity current (GC) released from a lock of length and height into an ambient fluid of height and density . The lock contains a layer of thickness of density overlaid by a layer of thickness and density , where and . As