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Photo Gallery of Fluid Visualization


 

(a). Over the upper surface of the airfoil

 

 (b). Over the lower surface of the airfoil

Glaze ice accretion process over a NACA0012 airfoil with airflow speed V=35m/s, T=-8°C, α = 5.0 deg. (Waldman & Hu, 2014)

 


 

              (a). airflow velocity V=15m/s                                       (b). airflow velocity V=20m/s                                                  (c). airflow velocity V=25m/s

Surface water rivulet/film flow over a NACA0012 airfoil pertinent to aircraft icing phenomena  (Zhang & Hu et al. 2013)

 


 

The wake vortices and turbulent flow structures behind a conventional Single-Rotor Wind Turbine (SRWT)

The wake vortices and turbulent flow structures behind a Co-rotating Dual-Rotor Wind Turbine (Co-DRWT)

The wake vortices and turbulent flow structures behind a Counter-rotating Dual-Rotor Wind Turbine (Counter-DRWT)

(Copyright © Zhenyu Wang, Ahmed Ozbay Wei Tian and Hui Hu @ Iowa State University, 2014)

PIV Measurements of Wind Turbine Wake (Hu et al. 2012)

 


         

        (a).  MTT raw image                                        (b). temperature fields derived from the image

Molecular Tagging  Thermometry (MTT) with adjustable sensitivity 

 


 

                      

      (a). image of 0.5 ms after the laser pulse                                               (b).  image of  5 ms later          

                                (c). MTV&T results derived from the MTV&T image pair

Molecular Tagging  Velocity and Thermometry (MTV&T) measurements 

 


 

        (a). total concentration                              (b).  molecularly-unmixed fraction                        (c). molecularly-unmixed fraction

Instantaneous quantification of molecular mixing in gaseous jet  flow 

 


 

                   

            (a). t = t0                                                    (b). t = t0+0.1s                

Vortex structures downstream a lobed nozzle/mixer 

 

 


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