Airflow pattern and performance analysis of diffuse ceiling ventilation in an office room using cfd study

Chen Zhang; Qingyan Chen; Per K. Heiselberg; Michal Z. Pomianowski

Airflow pattern and performance analysis of diffuse ceiling ventilation in an office room using cfd study

Chen Zhang, Qingyan Chen, Per K. Heiselberg, Michal Z. Pomianowski

Department of Building Environment and Energy Engineering

Research output: Unpublished conference presentation (presented paper, abstract, poster) › Conference presentation (not published in journal/proceeding/book) › Academic research › peer-review

3 Citations (Scopus)

Abstract

Diffuse ceiling ventilation uses perforations in the suspended ceiling to deliver air into the occupied zone. Due to the complex geometry of the diffuser, it is not possible to build an exact geometrical model in CFD simulation. Two numerical models are proposed in this study, one is a simplified geometrical model and the other is a porous media model. The numerical models are validated by the full-scale experimental studies in a climate chamber. The results indicate that porous media model performed better on predicting air flow characteristic below diffuse ceiling and air velocity near the floor. However, the simplified geometrical model shows superior performance on calculating the diffuse ceiling surface temperature.

Original language	English
Pages	925-932
Number of pages	8
Publication status	Published - 2015
Event	14th Conference of International Building Performance Simulation Association, BS 2015 - Hyderabad, India Duration: 7 Dec 2015 → 9 Dec 2015

Conference

Conference	14th Conference of International Building Performance Simulation Association, BS 2015
Country/Territory	India
City	Hyderabad
Period	7/12/15 → 9/12/15

ASJC Scopus subject areas

Computer Science Applications
Architecture
Modelling and Simulation
Building and Construction

Cite this

@conference{4b280a0d5f604293b37e7cd41af6b989,

title = "Airflow pattern and performance analysis of diffuse ceiling ventilation in an office room using cfd study",

abstract = "Diffuse ceiling ventilation uses perforations in the suspended ceiling to deliver air into the occupied zone. Due to the complex geometry of the diffuser, it is not possible to build an exact geometrical model in CFD simulation. Two numerical models are proposed in this study, one is a simplified geometrical model and the other is a porous media model. The numerical models are validated by the full-scale experimental studies in a climate chamber. The results indicate that porous media model performed better on predicting air flow characteristic below diffuse ceiling and air velocity near the floor. However, the simplified geometrical model shows superior performance on calculating the diffuse ceiling surface temperature.",

author = "Chen Zhang and Qingyan Chen and Heiselberg, {Per K.} and Pomianowski, {Michal Z.}",

year = "2015",

language = "English",

pages = "925--932",

note = "14th Conference of International Building Performance Simulation Association, BS 2015 ; Conference date: 07-12-2015 Through 09-12-2015",

}

Airflow pattern and performance analysis of diffuse ceiling ventilation in an office room using cfd study. / Zhang, Chen; Chen, Qingyan; Heiselberg, Per K. et al.
2015. 925-932 Paper presented at 14th Conference of International Building Performance Simulation Association, BS 2015, Hyderabad, India.

Research output: Unpublished conference presentation (presented paper, abstract, poster) › Conference presentation (not published in journal/proceeding/book) › Academic research › peer-review

TY - CONF

T1 - Airflow pattern and performance analysis of diffuse ceiling ventilation in an office room using cfd study

AU - Zhang, Chen

AU - Chen, Qingyan

AU - Heiselberg, Per K.

AU - Pomianowski, Michal Z.

PY - 2015

Y1 - 2015

N2 - Diffuse ceiling ventilation uses perforations in the suspended ceiling to deliver air into the occupied zone. Due to the complex geometry of the diffuser, it is not possible to build an exact geometrical model in CFD simulation. Two numerical models are proposed in this study, one is a simplified geometrical model and the other is a porous media model. The numerical models are validated by the full-scale experimental studies in a climate chamber. The results indicate that porous media model performed better on predicting air flow characteristic below diffuse ceiling and air velocity near the floor. However, the simplified geometrical model shows superior performance on calculating the diffuse ceiling surface temperature.

AB - Diffuse ceiling ventilation uses perforations in the suspended ceiling to deliver air into the occupied zone. Due to the complex geometry of the diffuser, it is not possible to build an exact geometrical model in CFD simulation. Two numerical models are proposed in this study, one is a simplified geometrical model and the other is a porous media model. The numerical models are validated by the full-scale experimental studies in a climate chamber. The results indicate that porous media model performed better on predicting air flow characteristic below diffuse ceiling and air velocity near the floor. However, the simplified geometrical model shows superior performance on calculating the diffuse ceiling surface temperature.

UR - http://www.scopus.com/inward/record.url?scp=84976359388&partnerID=8YFLogxK

M3 - Conference presentation (not published in journal/proceeding/book)

AN - SCOPUS:84976359388

SP - 925

EP - 932

T2 - 14th Conference of International Building Performance Simulation Association, BS 2015

Y2 - 7 December 2015 through 9 December 2015

ER -

Airflow pattern and performance analysis of diffuse ceiling ventilation in an office room using cfd study

Abstract

Conference

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this