Nested multi-scale system in the PALM large-eddy simulation model

verfasst von

Antti Hellsten, Klaus Ketelsen, Fotios Barmpas, Giorgios Tsegas, Nicolas Moussiopoulos, Siegfried Raasch

Abstract

Large-Eddy Simulation (LES) of atmospheric boundary layer (ABL) is becoming an important research method for urban air-quality studies. Until very recently, it was impossible to include detailed structures, such as buildings in ABL LES. Nowadays, it is possible, but such LES is still limited to a relatively small areas because typically about 1 m resolution is required. However, for several reasons an ABL LES domain should cover a large area leading to huge computational task. A means to overcome this is to concentrate resolution to the primary area of interest by means of model nesting. The idea of nesting is to simultaneously run a series of two or more LES in domains with different sizes and resolutions. In this work, two-way nesting is implemented in the parallelized LES model PALM. The nesting system is tested for several test cases including a convective boundary layer with zero mean wind, several neutral boundary layers over both flat terrain and terrain with an array of obstacles.

Organisationseinheit(en)

Institut für Meteorologie und Klimatologie

Externe Organisation(en)

Finnish Meteorological Institute
Aristotle University of Thessaloniki (A.U.Th.)

Typ

Beitrag in Buch/Sammelwerk

Seiten

287-292

Anzahl der Seiten

6

Publikationsdatum

2018

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Angewandte Mathematik, Modellierung und Simulation, Angewandte Informatik

Ziele für nachhaltige Entwicklung

SDG 11 – Nachhaltige Städte und Gemeinschaften, SDG 13 – Klimaschutzmaßnahmen

Elektronische Version(en)

https://doi.org/10.1007/978-3-319-57645-9_45 (Zugang: Geschlossen)