Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Fundamental principle of the technique with details of the heated structure (left) and cooling curves for various free stream velocities at a fixed streamwise position (right) Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Detailed view of the experimental setup with heated measurement area (gray) and points for reference measurements marked by a cross (left). Exemplary wall shear stress measurements for tripped and untripped flow (right). Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Area ratio over wall shear stress for various Reynolds numbers and laminar and turbulent flow conditions (left). Mean deviation from the reference measurements for laminar and turbulent flow conditions (right). Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Corrected laminar data and resulting mean wall shear stress deviations (left). Spatial deviation of the shear stress values from the reference measurements for two free stream velocities (right). Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Setup for the visualization experiments with heatable areas (left) and flow topology of the flow around a wall mounted cylinder (right) Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Visualization of the horseshoe vortex system (left). Comparison of infrared visualization and surface hotwire measurements (right). Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Visualization of the cylinder top (left) and visualization of the cylinder circumference (right) Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Sketch of a thermal tuft in two and three dimensions (left) and experimental setup for the thermal tuft sensor (right) Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Infrared images of the temperature field around the sensor for four different heat flux values and a skin friction of τw = 0.7 N/m2 Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Infrared Based Wall Shear Stress Measurement Techniques J. Thermal Sci. Eng. Appl. 2011;3(3): doi: / Infrared images of the temperature field around the sensor for two different shear stress values and a heat flux of q = 0.25 W/mm2 (left). Calibration curves and shear stress angle for various heat flux values (right). Figure Legend: