CFD Benchmark Tests for Indoor Environmental Problems: Part 2 Cross-Ventilation Airflows and Floor Heating Systems

Authors

  • Kazuhide Ito Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Kiao Inthavong Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Takashi Kurabuchi Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Toshikatsu Ueda Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Tomoyuki Endo Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Toshiaki Omori Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Hiroki Ono Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Shinsuke Kato Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Koji Sakai Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Yoshihide Suwa Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Hiroshi Matsumoto Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Hajime Yoshino Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Weirong Zhang Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
  • Jiyuan Tu Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

DOI:

https://doi.org/10.15377/2409-9821.2015.02.01.2

Keywords:

Indoor environment, Computational Fluid Dynamics, Benchmark test, Cross-ventilation airflows, floor heating systems.

Abstract

Commercial Computational Fluid Dynamics (CFD) software is practically applied in indoor environmental design recent years but the prediction accuracy of CFD simulation depends on the understanding for the fundamentals of fluid dynamics and the setting of appropriate boundary and numerical conditions as well. Additionally, deeper understanding to a specific problem regarding indoor environment is also requested. The series of this study aimed to provide with the practical information such as prediction accuracy and problematic areas related to CFD applications in indoor environment, air conditioning and ventilation, then performed benchmark tests and reported the results. In this Part 2, benchmark test results for cross-ventilation airflows and floor heating systems were introduced.The highest reproducibility of the predicted results compared with the wind tunnel results occurred when the Z0-type wall function was used as the floor-surface boundary condition and the SST k–ω for the turbulence model in case of cross-ventilation flow and SST k–ω model showed also the closest matching results with experiment in case of natural convection in a room with floor heating.

Author Biographies

Kazuhide Ito, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Kiao Inthavong, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Takashi Kurabuchi, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Toshikatsu Ueda, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Tomoyuki Endo, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Toshiaki Omori, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Hiroki Ono, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Shinsuke Kato, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Koji Sakai, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Yoshihide Suwa, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Hiroshi Matsumoto, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Hajime Yoshino, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Weirong Zhang, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

Jiyuan Tu, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

Interdisciplinary Graduate School of Engineering Science

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Published

2015-07-04

How to Cite

1.
Kazuhide Ito, Kiao Inthavong, Takashi Kurabuchi, Toshikatsu Ueda, Tomoyuki Endo, Toshiaki Omori, Hiroki Ono, Shinsuke Kato, Koji Sakai, Yoshihide Suwa, Hiroshi Matsumoto, Hajime Yoshino, Weirong Zhang, Jiyuan Tu. CFD Benchmark Tests for Indoor Environmental Problems: Part 2 Cross-Ventilation Airflows and Floor Heating Systems. Int. J. Archit. Eng. Technol. [Internet]. 2015Jul.4 [cited 2021Sep.25];2(1):23-49. Available from: https://www.avantipublishers.com/jms/index.php/ijaet/article/view/204

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