Eulerian-Lagrangian model for traffic dynamics and its impact on operational ventilation of road tunnel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F03%3APU42039" target="_blank" >RIV/00216305:26210/03:PU42039 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Eulerian-Lagrangian model for traffic dynamics and its impact on operational ventilation of road tunnel

Popis výsledku v původním jazyce

The contribution deals with a computational Eulerian-Lagrangian model that simulates movement of cars inside a road tunnel and its impact on operational ventilation. The model simulates moving cars as a discrete objects that "fly" through the tunnel. Theobjects are treated with Lagrangian momentum equation and their velocity is solved along their trajectories that are determined by the shape of the roadway. The ambient air is solved with a commercial CFD code StarCD. Due to drag force, the cars virtuallly change their velocity, but this latter is continuously re-set to its original value. Momentum equation for continuous phase contains an additional source term that results from the net efflux of momentum of cars when they enter and leave a particularcontrol volume of the solution domain. The model [1] can simulate cars moving with different speed and traffic rate in individual traffic lanes. As a result we obtain flow rate generated by moving vehicles as a function of traffic speed

Název v anglickém jazyce

Eulerian-Lagrangian model for traffic dynamics and its impact on operational ventilation of road tunnel

Popis výsledku anglicky

The contribution deals with a computational Eulerian-Lagrangian model that simulates movement of cars inside a road tunnel and its impact on operational ventilation. The model simulates moving cars as a discrete objects that "fly" through the tunnel. Theobjects are treated with Lagrangian momentum equation and their velocity is solved along their trajectories that are determined by the shape of the roadway. The ambient air is solved with a commercial CFD code StarCD. Due to drag force, the cars virtuallly change their velocity, but this latter is continuously re-set to its original value. Momentum equation for continuous phase contains an additional source term that results from the net efflux of momentum of cars when they enter and leave a particularcontrol volume of the solution domain. The model [1] can simulate cars moving with different speed and traffic rate in individual traffic lanes. As a result we obtain flow rate generated by moving vehicles as a function of traffic speed

Druh

D - Stať ve sborníku

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název statě ve sborníku

Aerodynamics & Ventilation of Vehicle Tunnels

ISBN

855980479

ISSN

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e-ISSN

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Počet stran výsledku

15

Strana od-do

877-891

Název nakladatele

NEUVEDEN

Místo vydání

Luzern

Místo konání akce

Luzern

Datum konání akce

7. 7. 2003

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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