A Zero-Equation Model for External Aerodynamics

  • M. M. Rahman Hangzhou Dianzi University, School of Mechanical Engineering, 310018 Hangzhou, China
  • Xueting Zhang Hangzhou Dianzi University, School of Mechanical Engineering, 310018 Hangzhou, China
  • K. Hasan Hangzhou Dianzi University, School of Mechanical Engineering, 310018 Hangzhou, China
  • Sheng Chen Hangzhou Dianzi University, School of Mechanical Engineering, 310018 Hangzhou, China
Keywords: Zero-equation model, Dilation symmetry, Stress length, order function, Wall turbulence


The zero-equation model (ZEM) has been generalized for aerodynamic applications by eliminating the thickness of boundary-layer (BL) dependency to construct the stress length parameter . The SED (Structural Ensemble Dynamics) postulate evaluates the  using the order function based on universal multi-layer structures for wall turbulence. The SED concept is further employed to optimize the profiles of the turbulent kinetic energy and dissipation rate with turbulent BL flows. Results demonstrate that the multi-layer ZEM receives a remarkable achievement in the prediction of wall-bounded turbulence and thus, prevails over the drawbacks encountered in most algebraic turbulence models.


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How to Cite
Rahman, M. M., Zhang, X., Hasan, K., & Chen, S. (2023). A Zero-Equation Model for External Aerodynamics. MIST INTERNATIONAL JOURNAL OF SCIENCE AND TECHNOLOGY, 11(1), 21-30. https://doi.org/10.47981/j.mijst.11(01)2023.403(21-30)