Master thesis and internship[BR]- Master's thesis : Investigation of the transition to turbulence on a flat-plate boundary layer at supercritical pressure[BR]- Integration Internship : Delft University of Technology
Gaspar, Romain
Promotor(s) :
Terrapon, Vincent
Date of defense : 26-Jun-2023/27-Jun-2023 • Permalink : http://hdl.handle.net/2268.2/17888
Details
Title : | Master thesis and internship[BR]- Master's thesis : Investigation of the transition to turbulence on a flat-plate boundary layer at supercritical pressure[BR]- Integration Internship : Delft University of Technology |
Translated title : | [fr] Analyse de l'instabilité secondaire des écoulements en couche limite avec des fluides dans leur région thermodynamique supercritique |
Author : | Gaspar, Romain ![]() |
Date of defense : | 26-Jun-2023/27-Jun-2023 |
Advisor(s) : | Terrapon, Vincent ![]() |
Committee's member(s) : | Pecnik, René
Hillewaert, Koen ![]() |
Language : | English |
Number of pages : | 125 |
Keywords : | [en] boundary layer [en] supercritical [en] instabilities [en] DNS |
Discipline(s) : | Engineering, computing & technology > Aerospace & aeronautics engineering |
Research unit : | TU Delft |
Name of the research project : | Investigation of the transition to turbulence on a flat-plate boundary layer at supercritical pressure |
Target public : | Researchers Professionals of domain Student |
Institution(s) : | Université de Liège, Liège, Belgique Université de TU-Delft, Delft, Pays-bas |
Degree: | Master en ingénieur civil en aérospatiale, à finalité spécialisée en "aerospace engineering" |
Faculty: | Master thesis of the Faculté des Sciences appliquées |
Abstract
[en] The secondary instability of boundary layer flows with fluids in their thermodynamic supercritical region. Above certain conditions of pressure and temperature, fluids reach a supercritical state where the distinction between liquid and gas phases does not exist any longer. The transition to turbulence of such fluids is a very active topic of research. Yet, the physical mechanism of transition are still largely unexplored.
We recently carried out a linear stability analysis (LSA) of supercritical CO2 developing over a flat plate. A new unstable mode was discovered, different from that of the boundary layer of an ideal fluid.
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