Different Boundary Conditions For LES Solver PALM 6.0 Used for ABL in Tunnel Experiment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985807%3A_____%2F23%3A00571279" target="_blank" >RIV/67985807:_____/23:00571279 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378297:_____/23:00571279 RIV/68407700:21220/23:00366182

Výsledek na webu

<a href="https://panm21.math.cas.cz/sbornik/PANM21_sbornik.pdf" target="_blank" >https://panm21.math.cas.cz/sbornik/PANM21_sbornik.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21136/panm.2022.19" target="_blank" >10.21136/panm.2022.19</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Different Boundary Conditions For LES Solver PALM 6.0 Used for ABL in Tunnel Experiment

Popis výsledku v původním jazyce

We tried to reproduce results measured in the wind tunnel experiment with a CFD simulation provided by numerical model PALM. A realistic buildings layout from the Prague-Dejvice quarter has been chosen as a testing domain because solid validation campaign for PALM simulation of Atmospheric Boundary Layer (ABL) over this quarter was documented in the past. The question of input data needed for such simulation and capability of the model to capture correctly the inlet profile and its turbulence structure provided by the wind-tunnel is discussed in the study The PALM dynamical core contains a solver for the Navier-Stokes equations. By default, the model uses the Large Eddy Simulation (LES) approach in which the bulk of the turbulent motions is explicitly resolved. It is well validated tool for simulations of the complex air-flow within the real urban canopy and also within its reduced scale provided by wind tunnel experiments. However the computed flow field between the testing buildings did not correspond well to the measured wind velocity in some points. Different setting of the inlet boundary condition was tested but none of them gave completely developed turbulent flow generated by vortex generators and castellated barrier wall place at the entrance of the aerodynamic section of the wind tunnel.

Název v anglickém jazyce

Different Boundary Conditions For LES Solver PALM 6.0 Used for ABL in Tunnel Experiment

Popis výsledku anglicky

We tried to reproduce results measured in the wind tunnel experiment with a CFD simulation provided by numerical model PALM. A realistic buildings layout from the Prague-Dejvice quarter has been chosen as a testing domain because solid validation campaign for PALM simulation of Atmospheric Boundary Layer (ABL) over this quarter was documented in the past. The question of input data needed for such simulation and capability of the model to capture correctly the inlet profile and its turbulence structure provided by the wind-tunnel is discussed in the study The PALM dynamical core contains a solver for the Navier-Stokes equations. By default, the model uses the Large Eddy Simulation (LES) approach in which the bulk of the turbulent motions is explicitly resolved. It is well validated tool for simulations of the complex air-flow within the real urban canopy and also within its reduced scale provided by wind tunnel experiments. However the computed flow field between the testing buildings did not correspond well to the measured wind velocity in some points. Different setting of the inlet boundary condition was tested but none of them gave completely developed turbulent flow generated by vortex generators and castellated barrier wall place at the entrance of the aerodynamic section of the wind tunnel.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/GA22-08786S" target="_blank" >GA22-08786S: Přenos tepla v mezních vrstvách při povrchu obvodových plášťů budov a jeho vliv na energetickou náročnost objektů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Programs and Algorithms of Numerical Mathematics 21

ISBN

978-80-85823-73-8

ISSN

—

e-ISSN

—

Počet stran výsledku

10

Strana od-do

209-218

Název nakladatele

Institute of Mathematics CAS

Místo vydání

Prague

Místo konání akce

Jablonec nad Nisou

Datum konání akce

19. 6. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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