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Numerical Model of Far Turbulent Wake Behind Towed Body in Linearly Stratified Media

In: Modeling, Simulation and Optimization of Complex Processes

Author

Listed:
  • N. P. Moshkin

    (Suranaree University of Technology, School of Mathematics)

  • G. G. Chernykh

    (Siberian Division of Russian Academy of Sciences, Institute of Computational Technologies)

  • A. V. Fomina

    (Kuzbass State Academy of Pedagogy)

Abstract

Based on three-dimensional parabolized system of averaged equations for motion, continuity, incompressibility, the energy of turbulence, the rate of dissipation transfer and the splitting method the numerical model of dynamics of turbulent wake behind towed body in linearly stratified fluid has been constructed. The turbulent wake behind towed body has significantly larger size and excess pressure compared with momentumless wake. This phenomenon is explained by production of turbulent energy due to the gradient of longitudinal velocity vector components in drag wake. The anisotropy decay of axial values of the dispersion of turbulent fluctuations of the horizontal and vertical velocity components in the case of drag and momentumless wakes is compared. The constructed model is applied to numerical modelling of dynamics of turbulent wake with small total excess momentum in linearly stratified media.

Suggested Citation

  • N. P. Moshkin & G. G. Chernykh & A. V. Fomina, 2008. "Numerical Model of Far Turbulent Wake Behind Towed Body in Linearly Stratified Media," Springer Books, in: Hans Georg Bock & Ekaterina Kostina & Hoang Xuan Phu & Rolf Rannacher (ed.), Modeling, Simulation and Optimization of Complex Processes, pages 433-443, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-79409-7_30
    DOI: 10.1007/978-3-540-79409-7_30
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