Descrizione del progetto
Simulazioni avanzate per far luce sui cambiamenti nella separazione di flusso
Finanziato dal Consiglio europeo della ricerca, il progetto TRANSEP affronterà le lacune insite nella fluidodinamica computazionale per quanto concerne la previsione della complessa fisica di flusso associata alla transizione da laminare a turbolento e alla separazione dei flussi. Sfruttando il calcolo su scala multi-peta, TRANSEP svilupperà metodi computazionali in grado di prevedere, comprendere e controllare questi complessi fenomeni di flusso. La ricerca proposta farà luce sull’inaspettato comportamento delle aree laminari sulle ali, sui drastici cambiamenti nelle regioni di separazione e transizione da laminare a turbolento sulle ali instabili e sulla complessa interazione di più regioni di separazione e transizione sulle configurazioni alari ad alta portanza.
Obiettivo
The vision spelled out in this proposal is to overcome the failure of Computational Fluid Dynamics to tackle one of the central unsolved fluid physics problems, namely predicting the sensitive flow physics associated with laminar-turbulent transition and flow separation. A recent, highly influential report by NASA (Slotnick et al., 2014) clearly states that the major shortcoming of CFD is its “… inability to accurately and reliably predict turbulent flows with significant regions of separation”, most often associated with laminar-turbulent transition.
The research proposed here will address this shortcoming and develop and utilize computational methods that are able to predict, understand and control the sensitive interplay between laminar-turbulent transition and flow separation in boundary layers on wings and other aerodynamic bodies.
We will be able to understand enigmas such as the recent results from the experiments of Saric et al. at the Texas A&M Univeristy where the laminar area of a wing grows after a smooth surface have been painted (increased roughness), or the drastic changes of laminar-turbulent transition and separation locations on unsteady wings, or the notoriously difficult interaction of multiple separation and transition regions on high-lift wing configurations. For such flows there have been little understanding of flow physics and few computational prediction capabilities. Here we will perform simulations that give completely new possibilities to visualize, understand and control the flow around such wings and aerodynamic bodies, including the possibility to compute and harness the flow sensitivities.
We will tackle these outstanding flow and turbulence problem using the new possibilities enabled by multi-peta scale computing.
Campo scientifico
- natural sciencescomputer and information sciencessoftware
- engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraft
- natural sciencescomputer and information sciencescomputational science
- natural sciencesphysical sciencesclassical mechanicsfluid mechanicsfluid dynamicscomputational fluid dynamics
Parole chiave
Programma(i)
Argomento(i)
Meccanismo di finanziamento
ERC-ADG - Advanced GrantIstituzione ospitante
100 44 Stockholm
Svezia