Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Marcus Oliver Letzel"'
Publikováno v:
Meteorologische Zeitschrift, Vol 21, Iss 6, Pp 575-589 (2012)
Hong Kong is one of the most densely built-up and populated cities in the world. An adequate air ventilation at pedestrian level would ease the thermal stress in its humid subtropical climate, but the high-density city severely reduces the natural ve
Externí odkaz:
https://doaj.org/article/34379cd795a448aeab3087b091552eed
Autor:
Marius Keck, Matthias Sühring, Siegfried Raasch, Björn Maronga, Marcus Oliver Letzel, Micha Gryschka, Rieke Heinze, Fabian Hoffmann, Klaus Ketelsen, Farah Kanani-Sühring
Publikováno v:
Geoscientific Model Development, Vol 8, Iss 8, Pp 2515-2551 (2015)
Geoscientific Model Development Discussions 8 (2015), Nr. 2, S. 1539-1637
Geoscientific Model Development Discussions 8 (2015), Nr. 2, S. 1539-1637
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). PALM is a Fortran 95-based 5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93815f3027120fe9eeb28c6a4478470c
http://www.geosci-model-dev.net/8/2515/2015/gmd-8-2515-2015.pdf
http://www.geosci-model-dev.net/8/2515/2015/gmd-8-2515-2015.pdf
Publikováno v:
Meteorologische Zeitschrift, Vol 21, Iss 6, Pp 575-589 (2012)
Hong Kong is one of the most densely built-up and populated cities in the world. An adequate air ventilation at pedestrian level would ease the thermal stress in its humid subtropical climate, but the high-density city severely reduces the natural ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::358d20e43a51b474fdc0b0a2883d11b8
https://doaj.org/article/34379cd795a448aeab3087b091552eed
https://doaj.org/article/34379cd795a448aeab3087b091552eed
Publikováno v:
Journal of Applied Meteorology and Climatology. 51:829-841
Thermal effects on turbulent flow and dispersion in and above an idealized street canyon with a street aspect ratio of 1 are numerically investigated using the parallelized large-eddy simulation model (“PALM”). Each of upwind building wall, stree
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cc59c1415c0776269a6ce1eee07f896
https://doi.org/10.1175/jamc-d-11-0180.1
https://doi.org/10.1175/jamc-d-11-0180.1
Publikováno v:
Journal of Physics: Conference Series. 1037:072020
A new industrial methodology for CFD-based site assessment is presented. It is based on a steady state two equation RANS model and includes the effect of Coriolis force, forests and buoyancy in the equations for turbulence. The computational results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ed6462e6743640a53f46dd232d524b9
https://doi.org/10.1088/1742-6596/1037/7/072020
https://doi.org/10.1088/1742-6596/1037/7/072020
Publikováno v:
Atmospheric Environment. 42:8770-8784
Urban turbulence characteristics are investigated at street canyon and neighbourhood scale. Three high resolution urban large-eddy simulation (LES) studies are performed using the urban version of the parallelized LES model PALM. Validation shows tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19bc029453ac4c6f80928d183ea89f25
https://doi.org/10.1016/j.atmosenv.2008.08.001
https://doi.org/10.1016/j.atmosenv.2008.08.001
Publikováno v:
Boundary-Layer Meteorology. 123:77-98
A large-eddy simulation (LES) study is presented that investigates the spatial variability of temporal eddy covariance fluxes and the systematic underestimation of representative fluxes linked to them. It extends a prior numerical study by performing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::897c9cdc82db6f7198cf83d110a7c640
https://doi.org/10.1007/s10546-006-9133-x
https://doi.org/10.1007/s10546-006-9133-x
Publikováno v:
Boundary-Layer Meteorology. 110:381-404
The spatial representativeness of heat fluxes on the basis of single-tower measurements, and the mechanism of the so-called energy imbalance problem, are investigated through numerical experiments using large-eddy simulation (LES). LES experiments ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d70b3c18a445977a831682603fdc07fe
https://doi.org/10.1023/b:boun.0000007225.45548.7a
https://doi.org/10.1023/b:boun.0000007225.45548.7a
Autor:
Marcus Oliver Letzel, Siegfried Raasch
Publikováno v:
Journal of the Atmospheric Sciences. 60:2328-2341
Mesoscale circulations induced by differential boundary layer heating due to surface inhomogeneities on scales of 5 km and more can significantly change the average properties and the structure of the convective boundary layer (CBL) as well as trigge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58316f87621d713a61bdc926248b5187
https://doi.org/10.1175/1520-0469(2003)060<2328:lesoti>2.0.co
https://doi.org/10.1175/1520-0469(2003)060<2328:lesoti>2.0.co
Publikováno v:
PROCEEDINGS OF HYDRAULIC ENGINEERING. 47:37-42
The so-called energy imbalance problem is investigated through numerical experiments using Large Eddy Simulation (LES). LES experiments are done for daytime atmospheric boundary layers over a flat surface with inhomogeneous heat flux. The heat flux i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a9de82088ab5327f6c672a03efd5990
https://doi.org/10.2208/prohe.47.37
https://doi.org/10.2208/prohe.47.37