Details
| Original language | English |
|---|---|
| Title of host publication | Springer Proceedings in Complexity |
| Pages | 287-292 |
| Number of pages | 6 |
| ISBN (electronic) | 978-3-319-57645-9 |
| Publication status | Published - 2018 |
Publication series
| Name | Springer Proceedings in Complexity |
|---|---|
| ISSN (Print) | 2213-8684 |
| ISSN (electronic) | 2213-8692 |
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.
Keywords
- Atmospheric boundary layer, Large-eddy simulation, Model nesting, Turbulence, Urban air quality, Urban climate
ASJC Scopus subject areas
- Mathematics(all)
- Applied Mathematics
- Mathematics(all)
- Modelling and Simulation
- Computer Science(all)
- Computer Science Applications
Sustainable Development Goals
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Springer Proceedings in Complexity. 2018. p. 287-292 (Springer Proceedings in Complexity).
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - Nested multi-scale system in the PALM large-eddy simulation model
AU - Hellsten, Antti
AU - Ketelsen, Klaus
AU - Barmpas, Fotios
AU - Tsegas, Giorgios
AU - Moussiopoulos, Nicolas
AU - Raasch, Siegfried
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
KW - Atmospheric boundary layer
KW - Large-eddy simulation
KW - Model nesting
KW - Turbulence
KW - Urban air quality
KW - Urban climate
UR - http://www.scopus.com/inward/record.url?scp=85060442080&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-57645-9_45
DO - 10.1007/978-3-319-57645-9_45
M3 - Contribution to book/anthology
AN - SCOPUS:85060442080
SN - 978-3-319-57644-2
T3 - Springer Proceedings in Complexity
SP - 287
EP - 292
BT - Springer Proceedings in Complexity
ER -