A local correlation-based algebraic transition model in k-ω SST formulation

Okumu B., BARAN Ö. U., Baş O.

AEROSPACE SCIENCE AND TECHNOLOGY, cilt.168, 2026 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 168
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.ast.2025.110786
  • Dergi Adı: AEROSPACE SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, zbMATH, Civil Engineering Abstracts
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

A new correlation-based algebraic transition model using local variables is proposed. Instead of solving an additional transport equation for intermittency, the model employs an intermittency function that controls the source terms of the turbulence model used. Thus, the model reduces the number of constants and functions needed, and achieves to solve problems by using less computational power compared to one-or two-equation transition models. The intermittency function of the present model is a more sophisticated modified version of that in the SA-BCM transition model, and it is coupled with the k-w SST turbulence model to eliminate the shortcomings in the SA-BCM model. The present model involves only four calibration constant, which are calibrated against the cases other than validation cases. The model is validated against a series of common flat plate experiments and four airfoil test cases. The results show a good agreement with the experiments and that the new model provides comparable success with more complicated transition models. Therefore, the present model provides an alternative means to include boundary layer transition effects in CFD simulations by reducing the number of constants and functions needed compared to that in other transition models.