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Browsing by Subject "large-eddy simulation"

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Advances in urban ventilation assessments using large-eddy simulation

Gronemeier, Tobias (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021)

Today, the majority of the world's population lives in city areas. This renders the urban climate to be the most impacting local climate to the global society. To understand and improve the urban climate, local governments ...
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 ...
Comparison of conventional lagrangian stochastic footprint models against les driven footprint estimates

Markkanen, T.; Steinfeld, Gerald; Kljun, N.; Raasch, Siegfried; Foken, T. (Göttingen : Copernicus GmbH, 2009)

In this study we introduce a comparison method for footprint model results by evaluating the performance of conventional Lagrangian stochastic (LS) footprint models that use parameterised flow field characteristics with ...
Development of a new urban climate model based on the model PALM – Project overview, planned work, and first achievements

Maronga, Björn; Gross, Günther; Raasch, Siegfried; Banzhaf, Sabine; Forkel, Renate; Heldens, Wieke; Kanani-Sühring, Farah; Matzarakis, Andreas; Mauder, Matthias; Pavlik, Dirk; Pfafferott, Jens; Schubert, Sebastian; Seckmeyer, Gunther; Sieker, Heiko; Winderlich, Kristina (Stuttgart : E. Schweizerbart Science Publishers, 2019)

In this article we outline the model development planned within the joint project Model-based city planning and application in climate change (MOSAIK). The MOSAIK project is funded by the German Federal Ministry of Education ...
Grobstruktursimulationen zur Untersuchung des Einflusses von Landoberflächenheterogenitäten auf die Struktur der konvektiven Grenzschicht sowie Analyse der Repräsentativität von Turbulenzmessungen

Sühring, Matthias (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2014)

[no abstract]
High resolution large-eddy simulation of turbulent flow around buildings

Letzel, Marcus Oliver (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2007)

[no abstract]
High-resolution large-eddy simulation studies of the turbulent structure of the convective boundary layer over homogeneous and heterogeneous terrain and implications for the interpretation of scintillometer data

Maronga, Björn (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2013)

[no abstract]
High-resolution large-eddy simulations of scalar transport in forest-edge flows and implications for the interpretation of in-situ micrometeorological measurements

Kanani-Sühring, Farah (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2015)

[no abstract]
Investigation of droplet dynamics in a convective cloud using a Lagrangian cloud model

Lee, Junghwa; Noh, Yign; Raasch, Siegfried; Riechelmann, Theres; Wang, Lian-Ping (Heidelberg : Springer, 2014)

A precipitating convective cloud is simulated successfully using the Lagrangian cloud model, in which the flow field is simulated by large eddy simulation and the droplets are treated as Lagrangian particles, and the results ...
Large-eddy simulation of a 15 GW wind farm: Flow effects, energy budgets and comparison with wake models

Maas, Oliver (Lausanne : Frontiers Media, 2023)

Planned offshore wind farm clusters have a rated capacity of more than 10 GW. The layout optimization and yield estimation of wind farms is often performed with computationally inexpensive, analytical wake models. As recent ...
Large-Eddy simulation of nocturnal radiation fog: Advances in microphysical representation and process-level evaluation

Schwenkel, Johannes (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)

Fog is characterized by the presence of liquid or solid water particles in the vicinity of Earth’s surface, that leads to a reduction in visibility to less than 1 km. This reduced visibility poses a significant threat ...
Large-eddy simulations over Germany using ICON: a comprehensive evaluation

Heinze, Rieke; Dipankar, Anurag; Henken, Cintia Carbajal; Moseley, Christopher; Sourdeval, Odran; Trömel, Silke; Xie, Xinxin; Adamidis, Panos; Ament, Felix; Baars, Holger; Barthlott, Christian; Behrendt, Andreas; Blahak, Ulrich; Bley, Sebastian; Brdar, Slavko; Brueck, Matthias; Crewell, Susanne; Deneke, Hartwig; Di Girolamo, Paolo; Evaristo, Raquel; Fischer, Jürgen; Frank, Christopher; Friederichs, Petra; Göcke, Tobias; Gorges, Ksenia; Hande, Luke; Hanke, Moritz; Hansen, Akio; Hege, Hans-Christian; Hoose, Corinna; Jahns, Thomas; Kalthoff, Norbert; Klocke, Daniel; Kneifel, Stefan; Knippertz, Peter; Kuhn, Alexander; Laar, Thriza van; Macke, Andreas; Maurer, Vera; Mayer, Bernhard; Meyer, Catrin I.; Muppa, Shravan K.; Neggers, Roeland A.J.; Orlandi, Emiliano; Pantillon, Florian; Pospichal, Bernhard; Röber, Niklas; Scheck, Leonhard; Seifert, Axel; Seifert, Patric; Senf, Fabian; Siligam, Pavan; Simmer, Clemens; Steinke, Sandra; Stevens, Björn; Wapler, Kathrin; Weniger, Michael; Wulfmeyer, Volker; Zängl, Günther; Zhang, Dan; Quaas, Johannes (Chichester : John Wiley and Sons Ltd, 2017)

Large-eddy simulations (LES) with the new ICOsahedral Non-hydrostatic atmosphere model (ICON) covering Germany are evaluated for four days in spring 2013 using observational data from various sources. Reference simulations ...
On the effect of nocturnal radiation fog on the development of the daytime convective boundary layer: A large-eddy simulation study

Schwenkel, Johannes; Maronga, Björn (Weinheim [u.a.] : Wiley, 2022)

The potential effect of failing to predict nocturnal deep radiation fog on the development of the daytime convective boundary layer (CBL) is studied using large-eddy simulations. Typical spring and autumn conditions for ...
The Parallelized Large-Eddy Simulation Model (PALM) version 4.0 for atmospheric and oceanic flows: model formulation, recent developments, and future perspectives

Maronga, Björn; Gryschka, Micha; Heinze, Rieke; Hoffmann, Fabian; Kanani-Sühring, Farah; Keck, Marius; Ketelsen, K.; Letzel, M.O.; Sühring, Matthias; Raasch, Siegfried (Göttingen : Copernicus, 2015-02-19)

In this paper we present the current version of the Parallelized Large-Eddy Simulation Model (PALM) whose core has been developed at the Institute of Meteorology and Climatology at Leibniz Universität Hannover (Germany). ...
Second-moment budgets in cloud topped boundary layers: A large-eddy simulation study

Heinze, Rieke; Mironov, Dmitrii; Raasch, Siegfried (Hoboken : Wiley Periodicals, 2015)

A detailed analysis of second-order moment budgets for cloud topped boundary layers (CTBLs) is performed using high-resolution large-eddy simulation (LES). Two CTBLs are simulated—one with trade wind shallow cumuli, and ...
Toward Large-Eddy Simulations of Dust Devils of Observed Intensity: Effects of Grid Spacing, Background Wind, and Surface Heterogeneities

Giersch, S.; Brast, M.; Hoffmann, F.; Raasch, S. (Hoboken, NJ : Blackwell Publishing Ltd, 2019)

Dust devils are convective vortices with a vertical axis of rotation made visible by lifted soil particles. Currently, there is great uncertainty about the extent to which dust devils contribute to the atmospheric aerosol ...
Towards a Better Representation of Fog Microphysics in Large-Eddy Simulations Based on an Embedded Lagrangian Cloud Model

Schwenkel, Johannes; Maronga, Björn (Basel : MDPI, 2020)

The development of radiation fog is influenced by multiple physical processes such as radiative cooling and heating, turbulent mixing, and microphysics, which interact on different spatial and temporal scales with one ...
Untersuchung der Evolution von Konvektionsstrukturen bei Kaltluftausbrüchen mit Hilfe eines parallelisierten Grobstrukturmodells

Schröter, Michael (Hannover : Universität, 2003)

[no abstract]
Untersuchungen zur Entwicklung von Rollenkonvektion in Kaltluftausbrüchen mittels Grobstruktursimulationen

Gryschka, Micha (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2010)

[no abstract]

Now showing items 1-19 of 19

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Browsing by Subject "large-eddy simulation"

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