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Updated: Jun 16, 2026

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
Published on: June 9, 2016
Boundary layer effects in optical measurements in gas dynamics
Abstract:
A method for including three-dimensional boundary corrections in the analysis of interferograms of two-dimensional flows is described. An effective optical pathlength is calculated using a displacement thickness concept. Expressions and methods for determining the correction to the optical pathlength are given for laminar and turbulent boundary layers in isoenergetic or diabatic flow. An exact expression is derived for the turbulent case and results given showing the correction to be of the order of 10%.
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