Effectiveness of cluster-based inductive ventilation system in railway tunnels: Case study using full-scale experiment and fire dynamic simulation

Yuan, Shasha; Sun, Xuan; Liu, Songtao; Li, Yinqing; Du, Peng

doi:10.1016/j.csite.2022.102045

Cited by 3 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Common methods for predicting smoke propagation paths in buildings include numerical simulations and experimental studies. The full-scale fire simulation is the most accurate method for obtaining the smoke transmission path [8]. However, this requires high site requirements and is time-consuming and costly [9].…”

Section: Introductionmentioning

confidence: 99%

A Prediction Model for Smoke Spread Path in High Rise Building Fires Based on Graph Theory

Zhao

Zhu

2023

Fire

View full text Add to dashboard Cite

To satisfy the demand for rapid prediction of smoke transmission paths in high-rise building fires, a graph-based model was developed. The model represents a high-rise building as a Directed Acyclic Graph (DAG) grid model and employs computer simulation to determine the smoke transmission path and generate prediction results. The results were compared with those from similar simulations and were found to be consistent, indicating the feasibility and objective nature of the prediction results. Compared to other methods, this model has a shorter modeling time and can quickly provide prediction results. Furthermore, it can be applied to buildings of any structure, thus serving as a reference for smoke control design in high-rise building fire protection systems, particularly in cases involving complex internal structures.

show abstract

Section: Introductionmentioning

confidence: 99%

A Prediction Model for Smoke Spread Path in High Rise Building Fires Based on Graph Theory

Zhao

Zhu

2023

Fire

View full text Add to dashboard Cite

show abstract

“…Several FDS models with a focus on ventilation issues in tunnels are evaluated within the verification and validation procedures and given in the FDS Technical Reference Guide (Volumes 2 and 3) [18,19], acknowledging the possibility of obtaining reliable and accurate results. Furthermore, many examples of the FDS model implementation in the design and performance assessment of ventilation and air conditioning systems, optimization of tunnel ventilation and other areas have been published in academic journals or presented at scientific conferences [20][21][22]. The relatively limited adoption of FDS in tunnel applications is largely due to the requirement of a rectilinear mesh whereas other CFD modules may support unstructured grids to better reflect the actual tunnel structure.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Numerical Methods Regarding the Backflow Investigation in Tunnels of Zentrum am Berg

Patsekha

Wei

Galler

2022

Berg Huettenmaenn Monatsh

View full text Add to dashboard Cite

The efficiency of tunnel ventilation systems is commonly evaluated through numerical modelling. In this survey, two CFD models were developed by means of Fire Dynamic Simulator and Ansys Fluent software. The simulation results were used to assess the model performance in studying the backflow distribution in a real tunnel. A full-scale experiment to evaluate the ventilation conditions in the western railway tunnel was carried out in Zentrum am Berg. The velocity values were obtained for 90 examined points located at 10 cross-sections along a 100-meter tunnel part. The results showed good agreement in velocity variation trends from field measurements and those predicted by numerical models. At cross-sections more distant from the fan outlets, the FDS and Fluent models overestimated the flow velocities to a different extent. The simulated backflow development corresponds well to the observed three specified regions (initial, transitional, and developed) with distinctive flow structures. The FDS calculations confirmed the registered spontaneous changes in flow direction at points with a prevailed flow direction in the vicinity of the jet fans. Despite some discrepancies in results, the comparative analysis of two numerical models showed their applicability in the backflow investigation.

show abstract

Understanding fire combustion characteristics and available safe egress time in underground metro trains: A simulation approach

Zhang,

Yao,

Xing

et al. 2024

Chaos, Solitons & Fractals

View full text Add to dashboard Cite

Effectiveness of cluster-based inductive ventilation system in railway tunnels: Case study using full-scale experiment and fire dynamic simulation

Cited by 3 publications

References 11 publications

A Prediction Model for Smoke Spread Path in High Rise Building Fires Based on Graph Theory

A Prediction Model for Smoke Spread Path in High Rise Building Fires Based on Graph Theory

Comparative Analysis of Numerical Methods Regarding the Backflow Investigation in Tunnels of Zentrum am Berg

Understanding fire combustion characteristics and available safe egress time in underground metro trains: A simulation approach

Contact Info

Product

Resources

About