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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. (Publisher's Version)
In: FAN 2018 - Proceedings of the International Conference on Fan Noise, Aerodynamics, Applications and Systems : 18. - 20. April 2018,
Darmstadt, International Conference on Fan Noise, Aerodynamics, Applications and Systems, Darmstadt, Germany, 18.-20.04.2018, DOI: 10.26083/tuprints-00021353,
[Conference or Workshop Item]

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Item Type: Conference or Workshop Item
Origin: Secondary publication service
Status: Publisher's Version
Title: Extended Rankine-Betz Theory for Design of Tunnel Ventilation Systems
Language: English
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.

Book Title: FAN 2018 - Proceedings of the International Conference on Fan Noise, Aerodynamics, Applications and Systems : 18. - 20. April 2018
Place of Publication: Darmstadt
Collation: 11 Seiten
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 16 Department of Mechanical Engineering > Institute for Fluid Systems (FST)
Event Title: International Conference on Fan Noise, Aerodynamics, Applications and Systems
Event Location: Darmstadt, Germany
Event Dates: 18.-20.04.2018
Date Deposited: 13 May 2022 13:49
Last Modified: 13 May 2022 13:49
DOI: 10.26083/tuprints-00021353
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-213530
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21353
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