Related Experiment Video
Updated: Aug 10, 2026

Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation
Published on: May 2, 2016
Comparison between two models of cooling surfaces using blowing
L Mathelin1, F Bataille, A Lallemand
1Institut National des Sciences Appliquées de Lyon Centre de Thermique de Lyon, UMR 5008 Bât. 404, 20 av. A. Einstein, 69621 Villeurbanne, France.
Abstract:
To protect surfaces against high temperatures, the blowing through a porous material is studied. The geometry is that of a circular cylinder in cross-flow and the effectiveness of the blowing for the thermal protection is numerically investigated. Two models are developed for the blowing simulation and comparisons are made with experimental data obtained in a heated wind-tunnel. It is shown that the blowing strongly affects the dynamical and thermal profiles over the surface, thickening the boundary layers and decreasing the external transfer coefficients. It results in a lower viscous drag and thermal stress. The wall temperature dramatically decreases with blowing and the heat flux is also affected.
More Related Videos
Related Concept Videos
Mechanism of heat transfer
Mechanisms of Heat Transfer I
Mechanisms of Heat Transfer II
Mechanisms of Heat Transfer
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.
Typical Model Studies
General External Flow Characteristics

