Performance of LES on non-uniform grids in a ventilated generic enclosure

Jo Hendrik Thysen; Twan van Hooff; Bert Blocken; Gert Jan van Heijst

Performance of LES on non-uniform grids in a ventilated generic enclosure

Jo Hendrik Thysen^*, Twan van Hooff, Bert Blocken, Gert Jan van Heijst

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Computational grids constructed for Reynolds-averaged Navier-Stokes simulations typically contain non-uniform, stretched grid cells. For large eddy simulations (LES), however, the computational cells should be cubic (i.e. uniform) which usually results in grids containing many more cells compared to non-uniform grids. The aim of this study is to analyse whether LES performed on non-uniform grids can yield reliable predictions of indoor ventilation flows. It is shown that with non-uniform grids and a relatively low number of computational cells reliable airflow predictions can be obtained in this case. However, additional research is needed for the development of guidelines on the use of LES for indoor airflows.

Original language	English
Title of host publication	15th International Conference on Indoor Air Quality and Climate (INDOOR AIR 2018)
Publisher	International Society of Indoor Air Quality and Climate
Pages	267-268
Number of pages	2
Volume	1
ISBN (Electronic)	9781713826514
Publication status	Published - 2018
Event	15th Conference of the International Society of Indoor Air Quality and Climate 2018 - Philadelphia, United States Duration: 22 Jul 2018 → 27 Jul 2018

Conference

Conference	15th Conference of the International Society of Indoor Air Quality and Climate 2018
Abbreviated title	INDOOR AIR 2018
Country/Territory	United States
City	Philadelphia
Period	22/07/18 → 27/07/18

Keywords

CFD
Forced mixing ventilation
Generic enclosure
Indoor airflow
Large eddy simulation

ASJC Scopus subject areas

Pollution

Cite this

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title = "Performance of LES on non-uniform grids in a ventilated generic enclosure",

abstract = "Computational grids constructed for Reynolds-averaged Navier-Stokes simulations typically contain non-uniform, stretched grid cells. For large eddy simulations (LES), however, the computational cells should be cubic (i.e. uniform) which usually results in grids containing many more cells compared to non-uniform grids. The aim of this study is to analyse whether LES performed on non-uniform grids can yield reliable predictions of indoor ventilation flows. It is shown that with non-uniform grids and a relatively low number of computational cells reliable airflow predictions can be obtained in this case. However, additional research is needed for the development of guidelines on the use of LES for indoor airflows.",

keywords = "CFD, Forced mixing ventilation, Generic enclosure, Indoor airflow, Large eddy simulation",

author = "Thysen, {Jo Hendrik} and {van Hooff}, Twan and Bert Blocken and {van Heijst}, {Gert Jan}",

note = "Publisher Copyright: {\textcopyright} 2018 15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018. All rights reserved.; 15th Conference of the International Society of Indoor Air Quality and Climate 2018, INDOOR AIR 2018 ; Conference date: 22-07-2018 Through 27-07-2018",

year = "2018",

language = "English",

volume = "1",

pages = "267--268",

booktitle = "15th International Conference on Indoor Air Quality and Climate (INDOOR AIR 2018)",

publisher = "International Society of Indoor Air Quality and Climate",

}

Thysen, JH, van Hooff, T, Blocken, B & van Heijst, GJ 2018, Performance of LES on non-uniform grids in a ventilated generic enclosure. in 15th International Conference on Indoor Air Quality and Climate (INDOOR AIR 2018). vol. 1, International Society of Indoor Air Quality and Climate, pp. 267-268, 15th Conference of the International Society of Indoor Air Quality and Climate 2018, Philadelphia, Pennsylvania, United States, 22/07/18.

Performance of LES on non-uniform grids in a ventilated generic enclosure. / Thysen, Jo Hendrik; van Hooff, Twan; Blocken, Bert et al.
15th International Conference on Indoor Air Quality and Climate (INDOOR AIR 2018). Vol. 1 International Society of Indoor Air Quality and Climate, 2018. p. 267-268.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Performance of LES on non-uniform grids in a ventilated generic enclosure

AU - Thysen, Jo Hendrik

AU - van Hooff, Twan

AU - Blocken, Bert

AU - van Heijst, Gert Jan

PY - 2018

Y1 - 2018

N2 - Computational grids constructed for Reynolds-averaged Navier-Stokes simulations typically contain non-uniform, stretched grid cells. For large eddy simulations (LES), however, the computational cells should be cubic (i.e. uniform) which usually results in grids containing many more cells compared to non-uniform grids. The aim of this study is to analyse whether LES performed on non-uniform grids can yield reliable predictions of indoor ventilation flows. It is shown that with non-uniform grids and a relatively low number of computational cells reliable airflow predictions can be obtained in this case. However, additional research is needed for the development of guidelines on the use of LES for indoor airflows.

AB - Computational grids constructed for Reynolds-averaged Navier-Stokes simulations typically contain non-uniform, stretched grid cells. For large eddy simulations (LES), however, the computational cells should be cubic (i.e. uniform) which usually results in grids containing many more cells compared to non-uniform grids. The aim of this study is to analyse whether LES performed on non-uniform grids can yield reliable predictions of indoor ventilation flows. It is shown that with non-uniform grids and a relatively low number of computational cells reliable airflow predictions can be obtained in this case. However, additional research is needed for the development of guidelines on the use of LES for indoor airflows.

KW - CFD

KW - Forced mixing ventilation

KW - Generic enclosure

KW - Indoor airflow

KW - Large eddy simulation

UR - http://www.scopus.com/inward/record.url?scp=85105679064&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85105679064

VL - 1

SP - 267

EP - 268

BT - 15th International Conference on Indoor Air Quality and Climate (INDOOR AIR 2018)

PB - International Society of Indoor Air Quality and Climate

T2 - 15th Conference of the International Society of Indoor Air Quality and Climate 2018

Y2 - 22 July 2018 through 27 July 2018

ER -

Performance of LES on non-uniform grids in a ventilated generic enclosure

Abstract

Conference

Keywords

ASJC Scopus subject areas

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