Robust viscous-inviscid interaction scheme for application on unstructured meshes

Theory and validation of a 2D Finite-Volume integral boundary layer method intended for icing applications

“…This is the aim of the present paper to address this objective. This work is in continuity with many other studies performed during the last decades to extend the application domain of integral boundary layer models [6][7][8][9][10][11][12][13][14][15][16][17].…”

“…where a(H) = p 2 − p(p + 1)Hg(H) − 1 and p(H) is given by equation (16). g(H) is given by equation (12).…”

“…An approach proposed by Lokatt and Eller is to change the closure relations to prevent the matrix singularity [16]. Here, a "control method" has been developped independently in order to avoid the Goldstein singularity.…”

Unsteady aerodynamic effects in small-amplitude pitch oscillations of an airfoil

“…Nati et al (2015) analyzed the effect of small amplitude pitching on a laminar separation bubble at low Reynolds numbers. Mai and Hebler (2011) and Hebler et al (2013) (Lokatt and Eller, 2017;Lokatt, 2017) qualitatively represent small changes in operating conditions, such as the changes due to structural deformations or small trailing-edge flap deflections. The understanding of flow response to such changes can be crucial in cases where small perturbations induce large variations in aerodynamic forces.…”

Stability and transition in pitching wings

“…The present work investigates the unsteady boundary layers with a particular focus on unsteady transition with the aim to shed light on the phenomenon of non-linear unsteady aerodynamic response. The NLF airfoil used in the unsteady experiments (Lokatt & Eller 2017;Lokatt 2017) has been used for the current numerical simulations. The results of the steady and unsteady experiments using this airfoil have been made available to us by Dr. Eller and Dr. Lokatt.…”