Schlieren flow visualization methods are an important part of high speed wind tunnel testing, being a fast and reliable method of graphically presenting complex dynamic phenomena that occur in high subsonic, transonic and supersonic regimes. Images can be processed and effects of configuration changes ...
Flow visualization is used for getting a quick qualitative overview of the flow around objects such as vehicles or airplanes in large wind tunnels.
airfoil modelV211.7In the present study, aerodynamic characteristics of the double wedge airfoil model were investigated in a transonic flow by using the shock tube as an intermittent wind tunnel. The driver and driven gases of the shock tube are dry air. The airfoil model of double wedge has...
In this study, Schlieren visualization and computational analysis of shock wave structures in ramjet/scramjet inlet/isolator models in supersonic flow have been performed. Experiments were performed in the supersonic wind tunnel at the Trisonic Research Laboratory in Istanbul Technical University. The ...
Oil film visualization is used in wind tunnels to visualize valuable information regarding laminar or turbulent boundary layer, transition, separated flow regions etc. of tested model. Some additives (pigments) are added in oil and then coated on the surface, when the wind tunnel is turned on, ...
A series of flow visualization are carried out to observe the flow pattern around and inside the cross-ventilated building, providing useful information about the transient nature of the CV at different sheltering conditions. The crossing airflow rate is also measured against different wind angles. ...
Flow VisualizationStratified FlowSmoke-Wire MethodWind TunnelWe demonstrated the evolution of grid turbulence under the action of a stable, linear, temperature gradient with smoke-wire method. The experiment was carried out in a large, open circuit, low speed wind tunnel 0.91×0.91 m 2 and 9.14 ...
The concept of Moving Surface Boundary-layer Control (MSBC), as applied to a family of two- dimensional airfoils, is investigated through a wind tunnel test-program complemented by numerical studies and flow visualization. The moving sur... ...
wind tunnels/ smoke-wire methodflow visualizationlow-speed wind-tunnel studiesduration timefine metal powderoil/ A4780 Measurement instrumentation and techniques for fluid dynamicsOne of the serious drawbacks of the smoke-wire method, which is a simple but very useful means of flow visualization in ...
Visualization of the vortex system in the wake of a fighter jet wind tunnel model at\(u_{\infty } =\)5m/s. The accumulated particle tracks correspond to a sliding time window of 20s. Local flow speeds are color-coded Full size image ...