Large-scale water loops

GW Pipe

The GW Pipe is a 0.25 m diameter, D, water pipe to study turbulent wall-bounded flows.  It is about 180 D long to enable a fully developed high-Reynolds number flow.  This facility, currently under construction, will be used for validating and improving turbulence models and other fundamental turbulence-related studies.

GW Tunnel

The GW Tunnel uses materials that are refractive index matched to the working fluid.  The index matching enables to study near wall phenomena and fluid-structure interactions in complex geometries.   The tunnel has a 0.6 m square cross section.  This facility was originally at the US DOE Idaho National Laboratory and is now under reconstruction following significant upgrades (https://gwtoday.gwu.edu/new-facilities-will-bring-turbulence-down-earth).

TCF: Turbulent Channel Facility

The Turbulent Channel Facility is a medium size channel facility (20 mm height, 10:1 aspect ratio, and 200 h in length).  The Channel can operate to a friction Reynolds number of 5,000. Its main application is the calibration of laser diagnostic used to probe turbulent flows.

15 cm Flume

Test section is 0.15 m square and 0.9 m long. The test section is UV transparent for MTV and PIV deployment.