Our lab is equipped with state-of-the-art diagnostic tools and setups, and equipment for turbulent boundary layer and cavitation research.
Instrumentation includes:
- Multi-channel pressure scanner; PCB sensors for dynamic pressure measurements over a wide range of frequencies up to 250 kHz; Setra Pressure Sensors for subatmospheric conditions.
- High-speed/high-resolution imaging techniques (Stereo PIV system; Schlieren and shadowgraphy).
Transitional and turbulent boundary layers research setups:
- New open-return modular wind tunnel, with variable speed (up to 50 m/s, 0.05%) and an interchangeable test section (0.6 x 0.6 m^2) , with flexible optical access for laser-based flow diagnostics. The tunnel’s versatility allows modifying and replacing any part of the tunnel to explore and develop new ideas.
- Closed-loop wind tunnel (Wind Tunnel 15) with modular test section (0.5 x 0.5 m^2) in a variable-speed (up to 50 m/s), low-turbulence (0.1%). The test sections are designed to be flexible in their use, allowing work on several projects in parallel.
- In addition, our lab has access to the facilities of the Technion Wind Tunnel Complex of the Faculty of Aerospace Engineering, which allows us to conduct wind tunnel studies at a wide range of flow conditions.
Cavitation and bubble dynamics research setups:
The lab possesses state-of-the-art cavitation and bubble dynamics setups that are used to understand complex cavitation mechanisms involving bubble dynamics in multi-component liquids.
- A vacuum-driven-blowdown CD-nozzle setup.
- High-pressure radial flow setup of a thin lubricating film between two overlying disks.
In all setups (such as the two examples above), high-speed imaging is obtained in conjunction with the following measurements: flow rate and dissolved gas content measurements; dynamical (unsteady) pressure measurements to fully quantify the spatial-temporal behavior of cavitation collapse events and traveling shock front magnitudes; and time-mean pressure profiles will be obtained using a static pressure transducer capable of measuring sub-atmospheric pressure conditions. These measurements provide a full characterization of the cavitation behavior that would be used to improve our understanding of the bubble dynamics of non-spherical cavities and bubbly shock emission generation and evolution mechanisms in multi-component cavitating liquids.
