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Memorias de investigación
Conferences:
Computation of nonlinear streaky structures in boundary layer flow
Year:2013
Research Areas
  • Aeronautical engineering
Information
Abstract
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).
International
Si
Entity
Entity Nationality
FRANCIA
Place
Burdeos, Francia
Participants
  • 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
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