Study of Radiative and Turbulent Processes in the Stable Boundary Layer under Weak Wind Conditions

Convergence to Lévy stable processes under some weak dependence conditions

For a strictly stationary sequence of random vectors in R we study convergence of partial sums processes to a Lévy stable process in the Skorohod space with J1-topology. We identify necessary and sufficient conditions for such convergence and provide sufficient conditions when the stationary sequence is strongly mixing.

Wind Tunnel Tests on Horn-Shaped Membrane Roof Under the Turbulent Boundary Layer

Turbulence Structure of the Atmospheric Boundary Layer in Stable Conditions

Data from SABLES98 experimental campaign have been used in order to study the influence of stability (from weak to strong stratification) on the flux-profile relationships for momentum and heat: φm and φh. Standard instrumentation, 14 thermocouples and 3 sonic anemometers at three levels (5.8, 13.5 and 32 m) were available from 10 to 28 September 1998 and calculations are done in order to extra...

Stable Manifolds under Very Weak Hyperbolicity Conditions

We present an argument for proving the existence of local stable and unstable manifolds in a general abstract setting and under very weak hyperbolicity conditions.

Weak Dirichlet Boundary Conditions for Wall-Bounded Turbulent Flows

In turbulence applications, strongly imposed no-slip conditions often lead to inaccurate mean flow quantities for coarse boundary-layer meshes. To circumvent this shortcoming, weakly imposed Dirichlet boundary conditions for fluid dynamics were recently introduced in [4]. In the present work, we propose a modification of the original weak boundary condition formulation that consistently incorpo...