Inverse-Velocity Transformation Wall Model for Reacting Turbulent Hypersonic Boundary Layers

Michele Cogo, Christopher Williams, Kevin Griffin, F. Picano, Parviz Moin

Research output: NRELTechnical Report


The present study builds on prior work by taking advantage of the novel framework proposed by Griffin et al. (2023) (hereafter referred to as the GFM) as a baseline. The model is progressively extended to multicomponent reacting mixtures, accounting for differential diffusion and finite-rate chemistry in a similar fashion to Di Renzo & Urzay (2019) and Di Renzo et al. (2020). The accuracy of the present approach, as well the prior model of Di Renzo & Urzay (2019), is assessed in an a priori sense for the first time in a turbulent reacting boundary layer, using the boundary-layer data of Williams et al. (2023). Five species are included in the present analysis, i.e., Ns = 5, namely N2, O2, NO, N and O, a neutral mixture most representative of dissociation/recombination phenomena for temperatures below 6000 K. A schematic of a flow over a wedge representative of the described configuration is presented in Figure 1. The brief is organized as follows: In Section 2, the wall-model equations and the computational framework are presented. In Section 3, the a priori results of the proposed model are described and compared to the extended EWM. Finally, in Section 4, some conclusions are offered.
Original languageAmerican English
Number of pages14
StatePublished - 2023

NREL Publication Number

  • NREL/TP-2C00-88039


  • high-speed flow
  • large eddy simulation
  • Reynolds-averaged Navier-Stokes


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