Numerical models of turbulent wake dynamics behind a towed body in a linearly stratified medium

Application of the B-Determining Equations Method to One Problem of Free Turbulence

“…In Fig. 3 adapted from [6] the normalized values of the turbulent energy along the wake axis e 1/2 0 /U 0 = e(x, 0, 0)/U 0 are compared with experimental data [17], computational results [9] and results of numerical simulation based on two semi-empirical turbulence models (Model1 and Model2 in [4,6]). The coordinate x is normalized by the body diameter D. The results obtained here are in close agreement with Lin and Pao's experimental data.…”

“…The following three-dimensional semiempirical model of turbulence was constructed in [4,6,25] to calculate characteristics of the far turbulent wake behind an axisymmetric self-propelled body in a passively stratified medium:…”

“…Differential transport equations [21] are used in [4,6,25] to determine the kinetic turbulent energy e, the kinetic energy dissipation rate ε, and the shear Reynolds stress v w :…”

“…The far turbulent wake behind an axisymmetric towed body in a linearly stratified medium was numerically simulated in [9]. Chernykh et al [6] carried out the numerical simulation of the dynamics of turbulent wakes in a stable stratified medium based on hierarchy of second order closure models. Calculation results obtained in [6,9] are in close agreement with experimental data [17].…”

“…Similarity solutions for several turbulence models were constructed in [7,13,14,15]. In the current paper we consider three-dimensional semiempirical model of the far turbulent wake behind an axisymmetrical self-propelled body in a passively stratified medium (see [6,4,25] and the references therein). This paper is organized as follows.…”