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Browsing by Subject "Boundary layer flow"

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Analysis of pressure-strain and pressure gradient-scalar covariances in cloud-topped boundary layers: A large-eddy simulation study

Heinze, Rieke; Mironov, Dmitrii; Raasch, Siegfried (Hoboken, NJ : Blackwell Publishing Ltd, 2016)

A detailed analysis of the pressure-scrambling terms (i.e., the pressure-strain and pressure gradient-scalar covariances) in the Reynolds-stress and scalar-flux budgets for cloud-topped boundary layers (CTBLs) is performed ...
The Effect of Surface Heterogeneity on the Structure Parameters of Temperature and Specific Humidity: A Large-Eddy Simulation Case Study for the LITFASS-2003 Experiment

Maronga, Björn; Hartogensis, Oscar K.; Raasch, Siegfried; Beyrich, Frank (Berlin : Kluwer Academic Publishers, 2014)

We conduct a high-resolution large-eddy simulation (LES) case study in order to investigate the effects of surface heterogeneity on the (local) structure parameters of potential temperature CT 2 and specific humidity Cq 2 ...
Effects of unstable stratification on ventilation in Hong Kong

Gronemeier, Tobias; Raasch, Siegfried; Ng, Edward (Basel : MDPI AG, 2017)

Ventilation in cities is crucial for thewell being of their inhabitants. Therefore, local governments require air ventilation assessments (AVAs) prior to the construction of new buildings. In a standard AVA, however, only ...
From gigawatt to multi-gigawatt wind farms: wake effects, energy budgets and inertial gravity waves investigated by large-eddy simulations

Maas, Oliver (Göttingen : Copernicus Publications, 2023)

The size of newly installed offshore wind farms increases rapidly. Planned offshore wind farm clusters have a rated capacity of several gigawatts and a length of up to 100 km. The flow through and around wind farms of this ...
Heterogeneity-Induced Heat-Flux Patterns in the Convective Boundary Layer: Can they be Detected from Observations and is There a Blending Height? - A Large-Eddy Simulation Study for the LITFASS-2003 Experiment

Sühring, Matthias; Raasch, Siegfried (Heidelberg : Springer Verlag, 2013)

An understanding of how the convective boundary layer (CBL) is mixed under heterogeneous surface forcing is crucial for the interpretation of area-averaged turbulence measurements. To determine the height and degree to ...
Large eddy simulation using the general circulation model ICON

Dipankar, Anurag; Stevens, Björn; Heinze, Rieke; Moseley, Christopher; Zängl, Günther; Giorgetta, Marco; Brdar, Slavko (Hoboken : Blackwell Publishing Ltd, 2015)

ICON (ICOsahedral Nonhydrostatic) is a unified modeling system for global numerical weather prediction (NWP) and climate studies. Validation of its dynamical core against a test suite for numerical weather forecasting has ...
Large-Eddy Simulations of Surface Heterogeneity Effects on the Convective Boundary Layer During the LITFASS-2003 Experiment

Maronga, Björn; Raasch, Siegfried (Heidelberg : Springer Verlag, 2013)

We investigate the impact of observed surface heterogeneities during the LITFASS-2003 experiment on the convective boundary layer (CBL). Large-eddy simulations (LES), driven by observed near-surface sensible and latent ...
Local convection and turbulence in the Amazonia using Large Eddy Simulation model

Neves, Theomar; Fisch, Gilberto; Raasch, Siegfried (Basel : MDPI AG, 2018)

Using a high resolution model of Large Eddies Simulation (LES), named PALM from PArallel LES Model, a set of simulations were performed to understand how turbulence and convection behave in a pasture and forest sites in ...
On the Effect of Surface Heat-Flux Heterogeneities on the Mixed-Layer-Top Entrainment

Sühring, Matthias; Maronga, Björn; Herbort, Florian; Raasch, Siegfried (Berlin : Kluwer Academic Publishers, 2014)

We used a set of large-eddy simulations to investigate the effect of one-dimensional stripe-like surface heat-flux heterogeneities on mixed-layer top entrainment. The profiles of sensible heat flux and the temporal evolution ...
Scaling the Decay of Turbulence Kinetic Energy in the Free-Convective Boundary Layer

El Guernaoui, Omar; Reuder, Joachim; Esau, Igor; Wolf, Tobias; Maronga, Björn (Dordrecht : Springer Netherland, 2019)

We investigate the scaling for decaying turbulence kinetic energy (TKE) in the free-convective boundary layer, from the time the surface heat flux starts decaying, until a few hours after it has vanished. We conduct a set ...

Now showing items 1-10 of 10

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Browsing by Subject "Boundary layer flow"

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