Differential Infrared Thermography for Unsteady Boundary-Layer Transition Measurements

AIAA Journal ◽  
2014 ◽  
Vol 52 (9) ◽  
pp. 2090-2093 ◽  
Author(s):  
Markus Raffel ◽  
Christoph B. Merz
Keyword(s):  
Boundary Layer ◽  
Infrared Thermography ◽  
Boundary Layer Transition ◽  
Unsteady Boundary Layer ◽  
Layer Transition

Advanced infrared thermography data analysis for unsteady boundary layer transition detection

2019 ◽  
Vol 31 (1) ◽  
pp. 015301 ◽  
Author(s):  
C Mertens ◽  
C C Wolf ◽  
A D Gardner ◽  
F F J Schrijer ◽  
B W van Oudheusden
Keyword(s):  
Boundary Layer ◽  
Data Analysis ◽  
Infrared Thermography ◽  
Boundary Layer Transition ◽  
Unsteady Boundary Layer ◽  
Layer Transition

Optimization of differential infrared thermography for unsteady boundary layer transition measurement

2019 ◽  
Vol 60 (1) ◽  
Author(s):  
C. Christian Wolf ◽  
Christoph Mertens ◽  
Anthony D. Gardner ◽  
Christoph Dollinger ◽  
Andreas Fischer
Keyword(s):  
Boundary Layer ◽  
Infrared Thermography ◽  
Boundary Layer Transition ◽  
Unsteady Boundary Layer ◽  
Layer Transition

Infrared thermography of hypersonic boundary layer transition induced by isolated roughness elements

2021 ◽  
Author(s):  
Shicheng Liu ◽  
Meng Wang ◽  
Hao Dong ◽  
Tianyu Xia ◽  
Lin Chen ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Infrared Thermography ◽  
Roughness Element ◽  
Transition Process ◽  
Boundary Layer Transition ◽  
Hypersonic Boundary Layer ◽  
Layer Transition ◽  
Leading Role ◽  
Roughness Elements ◽  
Element Shape

Roughness element induced hypersonic boundary layer transition on a flat plate is investigated using infrared thermography at Ma = 5 and 6 flow condition. Surface Stanton number is acquired to analyze the effect of roughness element shape and height on the transition process. The correlation between the vortex structure induced by roughness element and the wall heat streaks is established. The results indicate that higher roughness element would induce stronger streamwise heat flux streaks, lead to transition advance in streamwise centerline and increase the width of spanwise wake. Moreover, for low roughness element, the effect of the shape is not obvious, and the height plays a leading role in the transition; for tall roughness element, the effect on accelerating transition for the diamond roughness element is the best, the square is the worst, and the shape plays a leading role in the transition.

HIFiRE-5 Boundary-Layer Transition Measured in a Mach-6 Quiet Tunnel with Infrared Thermography

AIAA Journal ◽  
2019 ◽  
Vol 57 (5) ◽  
pp. 2001-2010 ◽  
Author(s):  
Thomas J. Juliano ◽  
Laura A. Paquin ◽  
Matthew P. Borg
Keyword(s):  
Boundary Layer ◽  
Infrared Thermography ◽  
Boundary Layer Transition ◽  
Layer Transition

scholarly journals Unsteady boundary-layer transition measurements and computations on a rotating blade under cyclic pitch conditions

2020 ◽  
Vol 61 (2) ◽  
Author(s):  
Armin Weiss ◽  
C. Christian Wolf ◽  
Kurt Kaufmann ◽  
Johannes N. Braukmann ◽  
James T. Heineck ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Boundary Layer Transition ◽  
Unsteady Boundary Layer ◽  
Layer Transition ◽  
Rotating Blade
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