Numerical Study on Different Series Modes of Jet Fan in a Longitudinal Tunnel Ventilation System
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-09-29
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Efficient ventilation systems will contribute to maintaining air quality in the tunnel.
In order to improve ventilation performance in normal traffic condition, the 3D tunnel models were established according to the original design for the tunnel located in central plains of China.
Based on the commercial CFD software Fluent 6.3 and k - ε turbulence model, numerical simulations were carried out to study the patterns of jet flow and the optimization of fan combinations.
It is found that the axial velocity profile obtained from numerical simulation agrees quite well with turbulent free jet theory although there is a little difference on the magnitude.
The comparison of four combination modes under the condition of operating four fans indicates that the ventilation effectiveness is affected mainly by both the interval of adjacent groups of fans and the combination modes of operational fans.
According to the simulation results, a novel combination mode which consists of a group double paralleled fans and two groups single fan is designed.
The novel combination mode is regarded as the optimum combination mode with respect to maximizing air velocity in the tunnel.
Compared to the traditional combination modes, it will increase the air velocity by 5.7%.
American Psychological Association (APA)
Pei, Guihong& Pan, Jie. 2014. Numerical Study on Different Series Modes of Jet Fan in a Longitudinal Tunnel Ventilation System. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1044075
Modern Language Association (MLA)
Pei, Guihong& Pan, Jie. Numerical Study on Different Series Modes of Jet Fan in a Longitudinal Tunnel Ventilation System. Mathematical Problems in Engineering No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1044075
American Medical Association (AMA)
Pei, Guihong& Pan, Jie. Numerical Study on Different Series Modes of Jet Fan in a Longitudinal Tunnel Ventilation System. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1044075
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1044075