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

N. P. Moshkin (), G. G. Chernykh () and A. V. Fomina ()
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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

A chapter in Modeling, Simulation and Optimization of Complex Processes, 2008, pp 433-443 from Springer

Abstract: 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.

Keywords: Internal Wave; Turbulent Energy; Vertical Velocity Component; Turbulent Wake; Velocity Defect (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-540-79409-7_30

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DOI: 10.1007/978-3-540-79409-7_30

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