Observatorio de I+D+i UPM

Memorias de investigación
Computation of nonlinear streaky structures in boundary layer flow
Research Areas
  • Aeronautical engineering
In this work, the reduced Navier Stokes (RNS) equations are numerically integrated. This formulation describes the flow in a three-dimensional boundary layer that also presents a short characteristic space scale in the spanwise direction. RNS equations are used to calculate nonlinear finite amplitude "streaks", and the results agree with those reported in the literature, typically obtained using direct numerical simulation (DNS) or nonlinear parabolized stability equations (PSE). "Streaks" simulations through the RNS integration are much cheaper than using DNS, and avoid stability problems that appear in the PSE when the amplitude of the "streak" is not small. The RNS integration code is also used to calculate the "streaks" that naturally emerge at the leading edge of a flat plate boundary layer in the absence of any free stream perturbations. Up to now, the existing results for these "streaks" have been only calculated in the linear limit (small amplitude), and in this work their calculation is carried out in the fully nonlinear regime (finite amplitude).
Entity Nationality
Burdeos, Francia
  • Autor: Juan Angel Martin Bautista (UPM)
  • Autor: Carlos Martel Escobar (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)