Výsledky vyhledávání

0585235 - ÚI DATA Vědecká data      2024
Geletič, Jan - Bauerová, P. - Belda, M. - Bureš, Martin - Eben, Kryštof - Fuka, V. - Karel, J. - Keder, J. - Krč, Pavel - Jareš, R. - Patiño, W. - Radović, J. - Resler, Jaroslav - Řezníček, Hynek - Šindelářová, A. - Vlček, O.

Scenarios simulations of Prague (D05).

Popis: Basic information
This dataset contains simulation results for the so-called Holešovičky domain, an area in the city of Prague, Czech Republic, expected to undergo major traffic infrastructure changes in the near future. Three scenarios were modelled: current infrastructure with traffic intensity projections for 2023 (C1), future outlook with a finished part of city inner ring-road in 2030 (C2) and effect of finishing the northern part of the Prague outer ring-road (C3), which will decrease heavy traffic in the domain. Note that all scenarios have slightly different landcover (trees, buildings, bridges, tunnels etc.), so there could be small areas containing NA values in the maps and GIS files. All times are in UTC (local time, CEST is UTC +02:00).

For more detailed description of the experiments see the TURBAN project website at https://www.project-turban.eu/.

General organisation
Each scenario has two folders; post-processed results from the PALM model as averaged ASCII files that can be viewed in many GIS applications (output-gis) and maps in the PNG format (output-png). Each variable was averaged from original 10min values to 1, 3 and 24-hour averages. The C1 scenario was used as a baseline. In addition to that, also differences for all variables were calculated for the scenarios C2 and C3. In total, the C1 scenario has 3 subfolders with absolute values (prefix abs), the scenarios C2 and C3 have 6 (3 with absolute values and 3 with differences; prefix diff).

Modelled variables
Each subfolder includes 7 subfolders with variables. Variable bio_mrt is the Mean Radiant Temperature (MRT), bio_pet is the Physiological Equivalent Temperature (PET), bio_utci is the Universal Thermal Climate Index (UTCI), kc_PM10_02m is the concentration of PM10 at 2m above ground, theta_2m is the potential temperature at 2m above ground, tsurf is the surface temperature and wspeed_10m is the wind speed at 10m above ground.

File nomenclature
Each file (PRJ or ASC, PNG) has the same nomenclature. An example (bio_utci_abs-01h_20190724_1200-1300.png) could be parsed as: variable name (bio_utci), processed output (abs-01h), date (20190724) and averaged period (1200-1300). So, the result is a map with hourly averaged UTCI for 24 Jul 2019 between 12:00 and 13:00 UTC.

Important note
During the processing phase a few potentially important problems were identified and need to be analysed in detail. One of them are extremely overestimated concentrations due to stable conditions from boundary condition inputs. In certain situations it can happen that the best regional meteorological model can provide inappropriate input conditions for some episode. This needs to be checked in detail before any following interpretation.
Klíčová slova: air quality * thermal comfort * micro-scale * CFD modeling * cities
Obor OECD: Meteorology and atmospheric sciences
Trvalý link: https://hdl.handle.net/11104/0353007
Vkladatel: admin
Datum publikování: 17.4.2024
 

0583369 - ÚT 2024 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Fürst, J. - Musil, Josef - Šimurda, David
Investigation of Transonic Flow through Linear Cascade with Single Blade Incidence Angle Offset.
Proceedings of Topical Problems of Fluid Mechanics 2022. Prague: Institute of Thermomechanics AS CR, 2022 - (Šimurda, D.; Bodnár, T.), s. 51-58. ISBN 978-80-87012-77-2. ISSN 2336-5781.
[Topical Problems of Fluid Mechanics 2022. Prague (CZ), 16.02.2022-18.02.2022]
Grant CEP: GA ČR(CZ) GA20-11537S
Institucionální podpora: RVO:61388998
Klíčová slova: compressor cascade * flutter * CFD * finite volumes * experimental validation * transonic
Obor OECD: Applied mechanics
http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2022/08-TPFM2022.pdf
Trvalý link: https://hdl.handle.net/11104/0351900

0579736 - ÚT 2024 PL eng A - Abstrakt
Studeník, Ondřej - Isoz, Martin
Utilizing virtual mesh to enable fully resolved CFD-DEM simulations of coarse-grained slurries comprising non-spherical particles.
15th Multiphase Workshop & Summer School. Gdaňsk, 2023. s. 10.
[Multiphase Workshop & Summer School /15./. 13.06.2023-15.06.2023, Gdaňsk]
Institucionální podpora: RVO:61388998
Klíčová slova: DEM * CFD * OpenFOAM
Obor OECD: Applied mathematics
Trvalý link: https://hdl.handle.net/11104/0349342

0579285 - ÚT 2024 IT eng A - Abstrakt
Kubíčková, Lucie - Isoz, Martin
Coarse mesh Reynolds averaged simulation with hybrid fictitious domain-immersed boundary method.
18th OpenFOAM Workshop 2023. Vol. Book of unedited abstracts. Itálie, 2023 - (Guerrero, J.; Pralits, J.)
[OpenFOAM Workshop /18./. 11.07.2023-14.07.2023, Genoa]
Institucionální podpora: RVO:61388998
Klíčová slova: RAS * wall functions * HFDIB * CFD * OpenFOAM
Obor OECD: Applied mathematics
https://figshare.com/articles/book/18th_OpenFOAM_Workshop_2023_Book_of_unedited_abstracts/24081426
Trvalý link: https://hdl.handle.net/11104/0350009

0579000 - ÚT 2024 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Studeník, Ondřej - Kotouč Šourek, M. - Isoz, Martin
Improving computational efficiency of contact solution in fully resolved CFD-DEM simulations with arbitrarily-shaped solids.
SNA'23 Seminar on Numerical Analysis. Ostrava: Institute of Geonics of the CAS, 2023 - (Starý, J.; Sysala, S.; Sysalová, D.), s. 65-69. ISBN 978-80-86407-85-2.
[Seminar on Numerical Analysis. Ostrava (CZ), 23.01.2023-27.01.2023]
Institucionální podpora: RVO:61388998
Klíčová slova: CFD * DEM * virtual mesh
Obor OECD: Applied mathematics
https://www.ugn.cas.cz/event/2023/sna/files/sna23-sbornik.pdf
Trvalý link: https://hdl.handle.net/11104/0350974