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Showing 1 to 10 of 10 for “"tunnel design"”.
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Back-analysis methods for optimal tunnel design
… behavioral trends of the work. Especially in tunnels, this is of paramount importance when the contractual arrangements allow an adaptive tunnel support design during construction such as the NATM approach. Utilization of measurements can reveal important aspects of the ground-support …
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A análise elasto-plástica de túneis pelo método dos elementos finitos
… and stresses in soil and rock masses, and in tunnel supporting elements. Basic characteristics of other tunnel design methods have also been discussed. At the sarne time, emphasis was given to the study of plasticity concepts and stress-strain behavior of soils. Drucker-Prager's model has been …
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An experimental investigation of unsteady separation shock wave motion in a plume-induced, separated flowfield
… flowfields were created in a blowdown-type wind tunnel designed specifically to produce PIBLS in a planar, two-stream, supersonic flow. In this unique wind tunnel, separation of the freestream boundary layer upstream of the base plane was accomplished by utilizing an angle-induced separation …
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The behavioural responses of stoats (Mustela erminea) to trapping tunnels
… control (Department of Conservation, 2000). Tunnels are used in almost all aspects of monitoring and control associated with stoats, yet few studies have investigated the influence of tunnel design on stoats' behavioural responses to them, or the effect on capture rate (Dilks et al.,1996; …
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Design and flow characterization of an indraft supersonic wind tunnel for scramjet testing
… the Colorado State University supersonic wind tunnel design, manufacture, assembly, and validation. The overarching goal of this research is to develop a ground testing platform for studying airbreathing hypersonic propulsion systems. Problems of interest include design of isolators, fuel …
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Rigorous Design of a Compact, Low-Speed, Open-Loop Wind Tunnel
Currently available literature regarding the design of fluid flow systems tend to focus on the specific system without providing a general guideline for how to address the design problem. This thesis focuses on developing such a general approach which is applied to the design of a wind tunnel meant …
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On the Characteristics of Fires in Tunnels
Important phenomena related to tunnel fires are presented including both experimental and theoretical work. The main focus is on the large-scale fire tests performed in 2003, in the Runehamar tunnel in Norway. During these tests heat release rate (HRR), temperatures, gas concentrations (O2, CO2, …
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The Design and Construction of a 20" x 20" Mach 2.0 Blowdown Wind Tunnel to Characterize the Lift and Drag of Irregularly Shaped Fragments
A supersonic wind tunnel, with a 20" x 20'" test section cross sectional area, was designed and constructed at the Techsburg Wind Tunnel Facility in order to determine the lift and drag on irregularly shaped fragments in supersonic flow. Prior to beginning the wind tunnel design process, a blowdown …
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Structural behaviour of concrete segmental lining tunnels: towards design optimisation
The deployment of engineering models and design methods divorced from the effect that mechanised shield tunnelling with tunnel boring machines (TBMs) has on concrete segmental linings (CSLs) can lead to either material waste or structural damage within the tunnel design life. Most research to date …
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Wind tunnel test section design active flow control implementation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms