This paper investigates the characteristics of wall pressure fluctuations in naturally developing boundary layer flows on axisymmetric bodies experimentally. The axisymmetric body has a modified ellipsoidal blunt nose. Flush-mounted microphones are used to measure the wall pressure fluctuations in the boundary layer flow over the body. The measurements are performed in a low noise wind tunnel. ...

This paper presents the use of SoftEther in supporting networking education. SoftEther is a tool to create a tunnel-based Virtual Private Network (VPN). Unlike Layer 2 tunneling protocol (L2TP) or Point to Point Tunneling Protocol (PPTP), SoftEther uses an upper layer protocol (Secured Socket Layer) to emulate a lower layer interface (Ethernet). This scheme is more flexible and easier to config...

Discrete roughness boundary layer transition results on a Shuttle Orbiter model in the NASA Langley Research Center 20-Inch Mach 6 Air Tunnel have been reanalyzed with new boundary layer calculations to provide consistency for comparison to other published results. The experimental results were previously obtained utilizing the phosphor thermography system to monitor the status of the boundary ...

To investigate the deformation and stability of rock surrounding a tunnel excavated through layered rock, three-dimensional numerical simulation was conducted to compare analyze right line YD2K100+560–630 two-stage docking cross-section Yuelongmen Tunnel using ubiquitous joint model. Based on 3-D simulations, following conclusions were drawn: (1) The excavation construction entrance side signif...

By sealing the portal at one end of tunnel and changing transverse location linear fire source in tunnel, hot smoke layer, longitudinal temperature distribution maximum were investigated. It is found that flame will bend under influence curved ceiling layer be thicker when approaches to side wall. The variation law heat release rate analyzed by considering limiting effect wall thermal feedback....

Lin & Pauley [2] studied unsteady boundary-layer separation from an Eppler 387 airfoil at low Reynolds number numerically and compared their results with wind tunnel measurements. They found unsteady large-scale structure might control the lowReynolds-number separation bubble reattachment with smallscale turbulence playing a secondary role [4]. Drela [5], Drela & Giles[6] used a fully coupled n...