Experimental study of turbulent-wake expansion from a surface ship |
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| Authors: | S A Ermakov I A Kapustin |
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| Institution: | 1.Institute of Applied Physics,Russian Academy of Sciences,Nizhny Novgorod,Russia |
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| Abstract: | We studied the time dynamics of a turbulent region excited by a moving surface vessel in a field experiment. The time dependences
of the geometrical sizes of the turbulent region are obtained, and it is shown that the time dependence of the width of the
turbulent wake at the initial stage is close to the power-law function with an exponent of 0.4 for different experiments (the
depth of the wake remaining practically constant). In the semiempirical turbulence theory, we suggested a qualitative model
describing the process of the initial expansion of a ship wake as a diffusion of a one-dimensional layer of turbulized liquid
due to a pulsed source. |
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