Road tunnel ventilation performance model testing system

A tunnel ventilation and tunnel model technology, which is applied in the field of model testing, can solve the problems of inability to effectively analyze the influence of traffic wind, slow driving speed, and test error of wind speed increase, so as to ensure multi-function and test accuracy, strong development versatility, The effect of improving reliability
CN103196649AInactive Publication Date: 2013-07-10TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2013-07-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a road tunnel ventilation performance model testing system. The road tunnel ventilation performance model testing system comprises a tunnel model, a traffic wind simulation system, a jet flow wind simulation system and a data test system. The traffic wind simulation system comprises a simulation dynamic model car and a car operation control system. The car operation control system comprises an annular guide rail model and a voltage controlled power source. The annular guide rail model is provided with two opposite straight line road sections and two opposite arc road sections, and road faces of the two arc road sections are inclined faces with lower inner sides and high outer sides. The voltage controlled power source comprises two groups, one group supplies power to the straight line road sections, in a tunnel, of the annular guide rail model, and the other group supplies power to the straight line road sections, paved outside the tunnel, of the annular guide rail model. The simulation dynamic model car operates on the annular guide rail model and gets power from the guide rail when passing through the two opposite straight line road sections. The road tunnel ventilation performance model testing system can form traffic wind which is stable and capable of guaranteeing that air flow can enter a self-model area, and has the advantages of being multifunctional and strong in development generality.
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Description

technical field

[0001] The invention relates to a model test technology, in particular to a road tunnel ventilation performance model test system. Background technique

[0002] The road tunnel ventilation performance model test system is an important means to study the aerodynamic problems in the road tunnel. It can qualitatively or quantitatively analyze the air flow characteristics in the tunnel, at the opening and at the vent. Considering the instability of natural wind, the air flow characteristics of road tunnels are studied by using model tests, mainly considering the influence of traffic wind formed by vehicle movement and fan boost pressure.

[0003] According to the requirements of the traffic wind test, the construction of the model tunnel needs to meet the Reynolds model law (Re), combined with the Strouhal number (Sr) to convert the flow field from the model space to the prototype space. After the model tunnel is scaled down, the tunnel wind speed required to me...

Claims

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