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Extended Rankine-Betz Theory for Design of Tunnel Ventilation Systems

Pelz, Peter F. ; Saul, Sebastian ; Doberstein, Christopher (2022)
Extended Rankine-Betz Theory for Design of Tunnel Ventilation Systems.
International Conference on Fan Noise, Aerodynamics, Applications and Systems. Darmstadt, Germany (18.-20.04.2018)
doi: 10.26083/tuprints-00021353
Conference or Workshop Item, Secondary publication, Publisher's Version

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Item Type: Conference or Workshop Item
Type of entry: Secondary publication
Title: Extended Rankine-Betz Theory for Design of Tunnel Ventilation Systems
Language: English
Date: 2022
Place of Publication: Darmstadt
Book Title: FAN 2018 - Proceedings of the International Conference on Fan Noise, Aerodynamics, Applications and Systems : 18. - 20. April 2018
Collation: 11 Seiten
Event Title: International Conference on Fan Noise, Aerodynamics, Applications and Systems
Event Location: Darmstadt, Germany
Event Dates: 18.-20.04.2018
DOI: 10.26083/tuprints-00021353
Corresponding Links:
Origin: Secondary publication service
Abstract:

Today, the system design of tunnel ventilation systems including jet fans neglects the stream tube contraction being covered by the Rankine-Betz theory. The presented system design tool extends in a truly physical manner the current method. The influence of the stream tube contraction is discussed and compared to the common but simplified design method by Meidinger dated back to 1964. In addition, the traffic is treated as a peristaltic flow at high Reynolds number and friction losses are modeled with common approaches. The new model allows analysis of several extreme situations, like normal traffic flow, traffic jam and fire in a tunnel. With the help of the new tool, tunnel design parameters (the number of jet fan units and the cross section ratio of jet fans and tunnel) and the operating conditions (velocity ratio of jet fan velocity and tunnel velocity) are predictable.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-213530
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Institute for Fluid Systems (FST) (since 01.10.2006)
Date Deposited: 13 May 2022 13:49
Last Modified: 03 Apr 2023 11:28
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21353
PPN: 495522244
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