Título:
|
Shock control bump design optimization on natural laminar aerofoil
|
Autor/a:
|
Lee, Dong Seop; Periaux, Jacques Francis; Srinivas, K.; Gonzalez, Luis Felipe; Qin, Ning; Oñate Ibáñez de Navarra, Eugenio
|
Otros autores:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. GMNE - Grup de Mètodes Numèrics en Enginyeria |
Abstract:
|
The chapter investigates Shock Control Bumps (SCB) on a Natural Laminar Flow (NLF) aerofoil; RAE 5243 for Active Flow Control (AFC). A SCB approach is used to decelerate supersonic flow on the suction/pressure sides of transonic aerofoil that leads delaying shock occurrence or weakening of shock strength. Such an AFC technique reduces significantly the total drag at transonic speeds. This chapter considers the SCB shape design optimisation at two boundary layer transition positions (0 and 45%) using an Euler software coupled with viscous boundary layer effects and robust Evolutionary Algorithms (EAs). The optimisation method is based on a canonical Evolution Strategy (ES) algorithm and incorporates the concepts of hierarchical topology and parallel asynchronous evaluation of candidate solution. Two test cases are considered with numerical experiments; the first test deals with a transition point occurring at the leading edge and the transition point is fixed at 45% of wing chord in the second test. Numerical results are presented and it is demonstrated that an optimal SCB design can be found to significantly reduce transonic wave drag and improves lift on drag (L/D) value when compared to the baseline aerofoil design. |
Abstract:
|
Peer Reviewed |
Materia(s):
|
-Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica -Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica -Aerofoils--Mathematical models -Drag Reduction -Suction Side -Wave Drag -Baseline Design -Boundary Layer Transition -Superfícies de sustentació |
Derechos:
|
|
Tipo de documento:
|
Artículo - Versión publicada Objeto de conferencia |
Editor:
|
Springer
|
Compartir:
|
|