Computation of nonlinear streaky structures in boundary layer flow

Juan Angel Martin (1) , Carlos Martel

1 DENLIA

In this work, the Reduced Navier Stokes (RNS) are numerically integrated, and used to calculate nonlinear finite amplitude streaks. These structures are interesting since they can have a stabilizing effect and delay the transition to the turbulent regime. RNS formulation is also used to compute the family of nonlinear intrinsic streaks that emerge from the leading edge in absence of any external perturbation. Finally, this formulation is generalized to include the possibility of having a curved bottom wall

Mots clés: streaks; nonlinear; boundary layer; intrinsic

Domaines: Analyse numérique [math.NA]; Mécanique [physics]; Sciences de l'ingénieur [physics]

Juan Angel Martin, Carlos Martel. Computation of nonlinear streaky structures in boundary layer flow. 2nd ECCOMAS Young Investigators Conference (YIC 2013), Sep 2013, Bordeaux, France. ⟨hal-00855836⟩