Publications related to Convective instability

Comments on origins of enhanced piezoelectric properties in ferroelectrics

This review discusses recent advances in understanding origins of large piezoelectric properties in some ferroelectric materials. In particular, it addresses the role of polarization rotation and monoclinic phases. It is suggested that the polarization rot ...

2009

Influence of El Nino-Southern Oscillation on the interannual variability of tropospheric ozone in the nothern midlatitudes

Isabelle Bey, Sylvia Generoso, Symeon Koumoutsaris

We use the GEOS-Chem model to interpret long-term measurements of tropospheric

{O}_{3}

and CO and to investigate the factors that contribute to their interannual variation (IAV) during the period from 1987 to 2005 with a focus on the northern mid-latitu ...

2008

Interannual variability in tropospheric ozone and its precursors

Symeon Koumoutsaris

Tropospheric ozone (O3) is a harmful pollutant and an increasingly important green-house gas. Tropospheric O3 distributions are determined by complex and non-linear interactions between photochemistry and transport processes. The first objective of this th ...

EPFL2008

Dynamic models for the subgrid-scale mixing of reactants in atmospheric turbulent reacting flows

Fernando Porté Agel

The effects of the subgrid scales on chemical transformations in large-eddy simulations of the convective atmospheric boundary layer (CBL) are investigated. Dynamic similarity subgrid-scale models are formulated and used to calculate the subgrid-scale cova ...

2008

Analysis of radioactivity releases in the MEGAPIE reference accident

Konstantin Mikityuk

A computer model for the MEGAwatt Pilot Target Experiment (MEGAPIE) was developed, verified and applied to the analysis of the reference accident, resulting from the hypothetical loss of a Pb–Bi inventory and subsequent cooling down of the target with free ...

2008

The Effect of Filter Dimension on the Subgrid-Scale Stress, Heat Flux, and Tensor Alignments in the Atmospheric Surface Layer

Marc Parlange, Charles Vivant Ignacio Meneveau, Chad Higgins

In field experiments designed to study subgrid-scale parameterizations for large eddy simulation, the flow field is often measured and then filtered in two-dimensional planes. This two-dimensional filtering serves as a surrogate for three-dimensional filte ...

2007

Concentration profiles of particles settling in the neutral and stratified atmospheric boundary layer

Marc Parlange, Charles Vivant Ignacio Meneveau

An expression for the vertical equilibrium concentration profile of heavy particles, including the effects of canopy on the eddy diffusivity as well as corrections for atmospheric stability, is proposed. This expression is validated against measurements of ...

2007

Large-eddy simulation of a diurnal cycle of the atmospheric boundary layer: Atmospheric stability and scaling issues

Marc Parlange, Charles Vivant Ignacio Meneveau, Vineet Kumar

A simulation of a diurnal cycle of atmospheric boundary layer (ABL) flow over a homogeneous terrain is performed using large-eddy simulation (LES) with the Lagrangian scale-dependent dynamic subgrid-scale model. The surface boundary condition is derived fr ...

American Geophysical Union2006

Numerical study of dynamic Smagorinsky models in large-eddy simulation of the atmospheric boundary layer: Validation in stable and unstable conditions

Marc Parlange, Charles Vivant Ignacio Meneveau, Vineet Kumar

Large-eddy simulation (LES) of atmospheric boundary layer (ABL) flow is performed over a homogeneous surface with different heat flux forcings. The goal is to test the performance of dynamic subgrid-scale models in a numerical framework and to compare the ...

2006

Dynamic subgrid-scale models for momentum and scalar fluxes in large-eddy simulations of neutrally stratified atmospheric boundary layers over heterogeneous terrain

Fernando Porté Agel

The accuracy of large-eddy simulations (LESs) of the atmospheric boundary layer (ABL) over complex terrain relies on the ability of the subgrid-scale (SGS) models to capture the effect of subgrid turbulent fluxes on the resolved fields of velocity and scal ...

2006

Convective instability

Graph Chatbot

Chat with Graph Search

Comments on origins of enhanced piezoelectric properties in ferroelectrics

Influence of El Nino-Southern Oscillation on the interannual variability of tropospheric ozone in the nothern midlatitudes

Interannual variability in tropospheric ozone and its precursors

Dynamic models for the subgrid-scale mixing of reactants in atmospheric turbulent reacting flows

Analysis of radioactivity releases in the MEGAPIE reference accident

The Effect of Filter Dimension on the Subgrid-Scale Stress, Heat Flux, and Tensor Alignments in the Atmospheric Surface Layer

Concentration profiles of particles settling in the neutral and stratified atmospheric boundary layer

Large-eddy simulation of a diurnal cycle of the atmospheric boundary layer: Atmospheric stability and scaling issues

Numerical study of dynamic Smagorinsky models in large-eddy simulation of the atmospheric boundary layer: Validation in stable and unstable conditions

Dynamic subgrid-scale models for momentum and scalar fluxes in large-eddy simulations of neutrally stratified atmospheric boundary layers over heterogeneous terrain

Comments on origins of enhanced piezoelectric properties in ferroelectrics

Analysis of radioactivity releases in the MEGAPIE reference accident

The Effect of Filter Dimension on the Subgrid-Scale Stress, Heat Flux, and Tensor Alignments in the Atmospheric Surface Layer

Influence of El Nino-Southern Oscillation on the interannual variability of tropospheric ozone in the nothern midlatitudes

Dynamic subgrid-scale models for momentum and scalar fluxes in large-eddy simulations of neutrally stratified atmospheric boundary layers over heterogeneous terrain

Large-eddy simulation of a diurnal cycle of the atmospheric boundary layer: Atmospheric stability and scaling issues

Numerical study of dynamic Smagorinsky models in large-eddy simulation of the atmospheric boundary layer: Validation in stable and unstable conditions

Interannual variability in tropospheric ozone and its precursors

Concentration profiles of particles settling in the neutral and stratified atmospheric boundary layer

Dynamic models for the subgrid-scale mixing of reactants in atmospheric turbulent reacting flows