CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions

Sumei Liu; Wuxuan Pan; Xiaorui Lin; Ke Qing; Weizhen Zhang; Zhengwei Long; Qingyan Chen

CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions

Sumei Liu, Wuxuan Pan, Xiaorui Lin, Ke Qing, Weizhen Zhang, Zhengwei Long, Qingyan Chen

Department of Building Environment and Energy Engineering

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

Natural ventilation in buildings can improve indoor air quality and thermal comfort in summer and can reduce the use of air-conditioning. Traditionally the inflow boundary conditions for calculating natural ventilation used weather data from a meteorological station that is often in suburb. The hourly wind velocity from the meteorological station may lead to some errors due to discretized data on hourly basis. This investigation proposed a correlation method to modify the hourly wind velocity from the meteorological station into minutely data by using measured data on the rooftop of a building interested. A CFD simulation using unsteady RNG k-ϵ model was performed to calculate simultaneously the outdoor wind velocity and the crossventilation rate through an apartment in the building. The computed results of outdoor wind velocity and indoor ventilation rate were compared with the experimental data. The results showed that the CFD simulations with the unsteady RNG k-e model and the modified inflow boundary conditions could accurately calculate the outdoor wind velocity variations and indoor natural ventilation rate.

Original language	English
Title of host publication	16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019
Editors	Vincenzo Corrado, Enrico Fabrizio, Andrea Gasparella, Francesco Patuzzi
Publisher	International Building Performance Simulation Association
Pages	3794-3801
Number of pages	8
ISBN (Electronic)	9781713809418
Publication status	Published - 2019
Event	16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019 - Rome, Italy Duration: 2 Sept 2019 → 4 Sept 2019

Publication series

Name	Building Simulation Conference Proceedings
Volume	6
ISSN (Print)	2522-2708

Conference

Conference	16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019
Country/Territory	Italy
City	Rome
Period	2/09/19 → 4/09/19

ASJC Scopus subject areas

Building and Construction
Architecture
Modelling and Simulation
Computer Science Applications

Cite this

Liu, S., Pan, W., Lin, X., Qing, K., Zhang, W., Long, Z., & Chen, Q. (2019). CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions. In V. Corrado, E. Fabrizio, A. Gasparella, & F. Patuzzi (Eds.), 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019 (pp. 3794-3801). (Building Simulation Conference Proceedings; Vol. 6). International Building Performance Simulation Association.

Liu, Sumei ; Pan, Wuxuan ; Lin, Xiaorui et al. / CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions. 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019. editor / Vincenzo Corrado ; Enrico Fabrizio ; Andrea Gasparella ; Francesco Patuzzi. International Building Performance Simulation Association, 2019. pp. 3794-3801 (Building Simulation Conference Proceedings).

@inproceedings{967d8a5b75f34181b94c39e78d45071d,

title = "CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions",

abstract = "Natural ventilation in buildings can improve indoor air quality and thermal comfort in summer and can reduce the use of air-conditioning. Traditionally the inflow boundary conditions for calculating natural ventilation used weather data from a meteorological station that is often in suburb. The hourly wind velocity from the meteorological station may lead to some errors due to discretized data on hourly basis. This investigation proposed a correlation method to modify the hourly wind velocity from the meteorological station into minutely data by using measured data on the rooftop of a building interested. A CFD simulation using unsteady RNG k-ϵ model was performed to calculate simultaneously the outdoor wind velocity and the crossventilation rate through an apartment in the building. The computed results of outdoor wind velocity and indoor ventilation rate were compared with the experimental data. The results showed that the CFD simulations with the unsteady RNG k-e model and the modified inflow boundary conditions could accurately calculate the outdoor wind velocity variations and indoor natural ventilation rate.",

author = "Sumei Liu and Wuxuan Pan and Xiaorui Lin and Ke Qing and Weizhen Zhang and Zhengwei Long and Qingyan Chen",

note = "Funding Information: The research presented in this paper was partially supported by the National Key R&D Program from the Ministry of Science and Technology, China, on {"}Green Buildings and Building Industrialization{"} through Grant No. 2016YFC0700500 and by the National Natural Science Foundation of China through Grant No. 51678395. Publisher Copyright: {\textcopyright} (2019) by International Building Performance Simulation Association (IBPSA) All rights reserved.; 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019 ; Conference date: 02-09-2019 Through 04-09-2019",

year = "2019",

language = "English",

series = "Building Simulation Conference Proceedings",

publisher = "International Building Performance Simulation Association",

pages = "3794--3801",

editor = "Vincenzo Corrado and Enrico Fabrizio and Andrea Gasparella and Francesco Patuzzi",

booktitle = "16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019",

}

Liu, S, Pan, W, Lin, X, Qing, K, Zhang, W, Long, Z & Chen, Q 2019, CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions. in V Corrado, E Fabrizio, A Gasparella & F Patuzzi (eds), 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019. Building Simulation Conference Proceedings, vol. 6, International Building Performance Simulation Association, pp. 3794-3801, 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019, Rome, Italy, 2/09/19.

CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions. / Liu, Sumei; Pan, Wuxuan; Lin, Xiaorui et al.
16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019. ed. / Vincenzo Corrado; Enrico Fabrizio; Andrea Gasparella; Francesco Patuzzi. International Building Performance Simulation Association, 2019. p. 3794-3801 (Building Simulation Conference Proceedings; Vol. 6).

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions

AU - Liu, Sumei

AU - Pan, Wuxuan

AU - Lin, Xiaorui

AU - Qing, Ke

AU - Zhang, Weizhen

AU - Long, Zhengwei

AU - Chen, Qingyan

N1 - Funding Information: The research presented in this paper was partially supported by the National Key R&D Program from the Ministry of Science and Technology, China, on "Green Buildings and Building Industrialization" through Grant No. 2016YFC0700500 and by the National Natural Science Foundation of China through Grant No. 51678395. Publisher Copyright: © (2019) by International Building Performance Simulation Association (IBPSA) All rights reserved.

PY - 2019

Y1 - 2019

N2 - Natural ventilation in buildings can improve indoor air quality and thermal comfort in summer and can reduce the use of air-conditioning. Traditionally the inflow boundary conditions for calculating natural ventilation used weather data from a meteorological station that is often in suburb. The hourly wind velocity from the meteorological station may lead to some errors due to discretized data on hourly basis. This investigation proposed a correlation method to modify the hourly wind velocity from the meteorological station into minutely data by using measured data on the rooftop of a building interested. A CFD simulation using unsteady RNG k-ϵ model was performed to calculate simultaneously the outdoor wind velocity and the crossventilation rate through an apartment in the building. The computed results of outdoor wind velocity and indoor ventilation rate were compared with the experimental data. The results showed that the CFD simulations with the unsteady RNG k-e model and the modified inflow boundary conditions could accurately calculate the outdoor wind velocity variations and indoor natural ventilation rate.

AB - Natural ventilation in buildings can improve indoor air quality and thermal comfort in summer and can reduce the use of air-conditioning. Traditionally the inflow boundary conditions for calculating natural ventilation used weather data from a meteorological station that is often in suburb. The hourly wind velocity from the meteorological station may lead to some errors due to discretized data on hourly basis. This investigation proposed a correlation method to modify the hourly wind velocity from the meteorological station into minutely data by using measured data on the rooftop of a building interested. A CFD simulation using unsteady RNG k-ϵ model was performed to calculate simultaneously the outdoor wind velocity and the crossventilation rate through an apartment in the building. The computed results of outdoor wind velocity and indoor ventilation rate were compared with the experimental data. The results showed that the CFD simulations with the unsteady RNG k-e model and the modified inflow boundary conditions could accurately calculate the outdoor wind velocity variations and indoor natural ventilation rate.

UR - http://www.scopus.com/inward/record.url?scp=85107442081&partnerID=8YFLogxK

M3 - Conference article published in proceeding or book

AN - SCOPUS:85107442081

T3 - Building Simulation Conference Proceedings

SP - 3794

EP - 3801

BT - 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019

A2 - Corrado, Vincenzo

A2 - Fabrizio, Enrico

A2 - Gasparella, Andrea

A2 - Patuzzi, Francesco

PB - International Building Performance Simulation Association

T2 - 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019

Y2 - 2 September 2019 through 4 September 2019

ER -

Liu S, Pan W, Lin X, Qing K, Zhang W, Long Z et al. CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions. In Corrado V, Fabrizio E, Gasparella A, Patuzzi F, editors, 16th International Conference of the International Building Performance Simulation Association, Building Simulation 2019. International Building Performance Simulation Association. 2019. p. 3794-3801. (Building Simulation Conference Proceedings).

CFD simulations of cross natural ventilation through an apartment with modified inflow boundary conditions

Abstract

Publication series

Conference

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this