Accurate and Efficient Modeling of Boundary-Layer Instabilities Conference Paper uri icon

abstract

  • � 2019 by German Aerospace Center (DLR). Published by the American Institute of Aeronautics and Astronautics, Inc. Boundary-layer stability modeling and laminar-to-turbulent transition prediction techniques will be examined and assessed on various geometries. A new in-house boundary-layer stability equations derivation code is introduced and linear stability theory and the parabolized stability equations are verified. Advances to EPIC, the previously introduced in-house boundary-layer stability code, are discussed. Finally, techniques for analyzing the parabolized stability equations are individually assessed. This includes optimizing the disturbance equations, showing the effects of the slowly varying terms within the viscous tensor and the Taylor series expansion on the gas properties, converging the nonlinear terms, and various Stanton number analysis methods. A computational transition process for stationary crossflow is outlined.

author list (cited authors)

  • Moyes, A., Beyak, E., Kocian, T. S., & Reed, H. L.

citation count

  • 3

publication date

  • January 2019