Dynamic evolutions of traffic wind influenced by ambient wind for urban road tunnel with shafts
نویسندگان
چکیده
Urban road tunnels with shafts have been applied in some cities China. Field measurements of Mofan Road Tunnel show that ambient wind is widespread and its influence on the ventilation efficiency shaft unclear. In this paper, physical model a three-lane 210 m (length) *12 (width) *6 (height) tunnel studied, three vehicles each lane speed 60 km/h. Three-dimensional CFD simulations long double carried out by Fluent 6.3.26. Momentum equation k-ε turbulence are used for simulation analysis dynamic grid technology to simulate driving. It found has great flow field shaft. Number Ri defined as ratio horizontal inertia force vertical force, revealing conversion force.
منابع مشابه
Thermally stratifying a wind tunnel for buoyancy influenced flows
A novel method of heating wind tunnel flows to strong thermal stratifications is described. Variable electric heating is employed to create user-selectable temperature profiles in steady, uniform mean flow. Linear temperature gradients of up to 200~ (V/iisfil~i frequencies of 2.5 rad s1) can be sustained. The performance of the facility is discussed in the context of continuouslystratified grid...
متن کاملOn-road and wind-tunnel measurement of motorcycle helmet noise.
The noise source mechanisms involved in motorcycling include various aerodynamic sources and engine noise. The problem of noise source identification requires extensive data acquisition of a type and level that have not previously been applied. Data acquisition on track and on road are problematic due to rider safety constraints and the portability of appropriate instrumentation. One way to add...
متن کاملWind tunnel measurements of pollutant turbulent fluxes in urban intersections
Wind tunnel experiments have been carried out at the EnFlo laboratory to measure mean and turbulent tracer fluxes in geometries of real street canyon intersections. The work was part of the major DAPPLE project, focussing on the area surrounding the intersection between Marylebone Road and Gloucester Place in Central London, UK. Understanding flow and dispersion in urban streets is a very impor...
متن کاملSpace charge generated by wind tunnel fires
Ž . Plume clouds resulting from wildland fires pyrocumulus sometimes produce lightning discharges to ground. These discharges were found to carry positive charge to ground exclusively in several cases. Emission of space charge was observed from woody materials burned in the presence of an external electric field. Measurements done in a large wind tunnel for this study confirm and extend measure...
متن کاملEstimation of Unsteady Aerodynamic Models from Dynamic Wind Tunnel Data
Demanding aerodynamic modelling requirements for military and civilian aircraft have motivated researchers to improve computational and experimental techniques and to pursue closer collaboration in these areas. Model identification and validation techniques are key components for this research. This paper presents mathematical model structures and identification techniques that have been used s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: E3S web of conferences
سال: 2022
ISSN: ['2555-0403', '2267-1242']
DOI: https://doi.org/10.1051/e3sconf/202235602014