Circular Free Jets: CFD Simulations with Various Turbulence Models and Their Comparison with Theoretical Solutions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU131293" target="_blank" >RIV/00216305:26110/19:PU131293 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1757-899X/471/6/062045" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/471/6/062045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/471/6/062045" target="_blank" >10.1088/1757-899X/471/6/062045</a>

Result language

angličtina

Original language name

Circular Free Jets: CFD Simulations with Various Turbulence Models and Their Comparison with Theoretical Solutions

Original language description

The theory of turbulent free jet is fundamental for the design of comfort ventilation, as free jets frequently occur in mixing and personalized ventilation systems and their characteristics strongly influence the air quality in the breathing zone of an occupant. The aim of this research is to provide recommendations that help researchers and practitioners improve the accuracy and reliability of their computational models of ventilation systems involving circular free jets. To accomplish this, a review of existing theoretical calculation models is performed, and these models are subsequently investigated by computational fluid dynamics. The theoretical solutions of free jets are compared with CFD simulations using various turbulent models such as the standard k-epsilon model, the k-epsilon realizable model, the standard k-omega model, the shear stress transport (SST) k-omega model, and the Reynolds stress model (RSM). The simulated models are represented by profiles of the centreline velocity for a free jet emanating from a round nozzle, because such presentation of the data proved to be particularly helpful for the comparison of the turbulence models. The k-omega SST turbulence closure scheme with standard coefficients produced results of the centreline velocity closest to the average of theoretical solutions investigated, whereas the discrepancy between the simulations and the theoretical models was about 60 % with the k-epsilon standard turbulence model.

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/LO1408" target="_blank" >LO1408: AdMaS UP – Advanced Building Materials, Structures and Technologies</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

WMCAUS 2018

ISBN

—

ISSN

1757-899X

e-ISSN

—

Number of pages

8

Pages from-to

1-8

Publisher name

IOP Publishing Ltd

Place of publication

Bristol United Kingdom

Event location

Praha

Event date

Jun 18, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000465811802096