H2020Индивидуална стипендия2016–2018

U2FAST · Unsteadiness in High-Speed Strong Shock-Boundary Layer Interactions

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-06-15 → 2018-06-14
Финансиране от ЕС: 183 455 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Нестабилностите при взаимодействието на ударни вълни и гранични слоеве на въздуха се анализират чрез експерименти с плазма в аеродинамични тръби. Това помага за подобряване на въздухозаборниците на самолетите, което може да намали разхода на гориво и шума.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Unsteadiness in High-Speed Strong Shock-Boundary Layer Interactions

The project aims to understand and control unsteadiness in hypersonic shock boundary layer interaction (SBLI) near leading edge resulting in leading edge separation of flow. This has direct relevance in performance of aircraft intakes as well as drag. As a result of the reduced fuel consumption and aircraft noise, the vehicles can be more environmental friendly. The control of unsteadiness using Dielectric Barrier Discharge (DBD) plasma is explored. The overall objectives are: 1) Make significant advances and novel contributions in the state of the art by providing new physical insight of the unsteady interactions, to rectify their adverse effects by employing plasma based control technique; 2) Gain the experience, knowledge, and credibility to establish the Fellow as a world class engineer and researcher. The proposed study utilised wind tunnel experiments to obtain a complete spatio-temporal topology and the unsteady flow dynamics of shock induced leading edge separation, to identify the parameters affecting the phenomena and the mechanisms at play, and to implement plasma based flow control mechanism. The research work which combined experimental and analytical techniques resulted in the identification, for the first time, of bifurcations in the unsteady flow dynamics of SBLI with leading edge separation. This fellowship has provided Dr Sriram Rengarajan with support and training in all scientific and engineering aspects concerning the development, realization, characterization, analysis and control of SBLI with leading edge separation. This programme was supported by the excellent research environment provided by the host, Prof Kontis, University of Glasgow UK, with state-of-the-art facilities and training. This programme also benefited from the strong links between the host group and leading UK and international research groups.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Travelling at high speeds entails overcoming adverse effects, such as regions of high heat transfer and surface pressures, unsteady shock waves, and fluid-structure interactions. The occurrence of shock boundary layer interaction (SBLI) close to the leading edge is common in high-speed intakes. When accompanied by separation, the interaction adversely affects the performance of the system. The adverse effects are more than just those related to the energy/efficiency budgets; the separation could be unsteady and 3-dimensional which imposes heavy unsteady loads (including thermal loads) on the structure. An understanding of the 3-dimensionality and unsteadiness associated with strong shock-boundary layer interactions thus becomes inevitable in view of controlling them, especially at high-speed Mach numbers, particularly in the context of intakes. The objectives of the propose study are:1) investigate experimentally the spatio-temporal organization of a shock induced laminar/transitional separation bubble near the leading edge.2) study in detail, the mechanisms responsible for the unsteadiness using advanced flow diagnostic techniques.3) propose and demonstrate novel methods of control of the unsteady interactions. The research programme will advance the frontiers of supersonic and hypersonic aerothermodynamics and propulsion and it will firmly establish a UK/European lead in research on shock-boundary layer interactions and their control. This programme will be supported by the excellent research environment provided by the host, Prof Kontis, University of Glasgow UK, with state-of-the-art facilities for research development, testing and training. This programme will also benefit from the strong links between the host group and leading UK and international research groups.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITY OF GLASGOW · GlasgowКоординаторОбединеното кралство