*Ocean

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*Ocean

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Purpose

To specify general parameters defining the ocean environment.

Theory

Refer to Environmental Parameters for further information on this feature.

Keyword Format

A single line with the following format:        

Depth, Density, Acceleration due to Gravity [, Kinematic Viscosity]

The Kinematic Viscosity is used only when hydrodynamic coefficients are specified as a function of Reynolds Number. Otherwise this input can be omitted.

Table Input

Input:

Description

Water Depth:

The water depth.

Water Density:

The value of ρw, the mass density (mass per unit volume) of seawater. This defaults to a value of 1025 kg/m3.

Acceleration due to Gravity:

The value of g, the acceleration due to gravity. This defaults to a value of 9.81m/s2.

Water Kinematic Viscosity:

The value of ν, the kinematic viscosity of seawater. This defaults to a value of 1.3x10-6 m2/s for a Metric unit system, 1.4x10-5 ft2/s for an Imperial unit system, and 1.0x10-10 for a custom unit system. See Note (a).

Notes

(a)The value of the kinematic viscosity ν is used only to determine the value of Reynolds number in the case where you have specified hydrodynamic coefficients as a function of Reynolds number. If you do not invoke this facility, the value of ν is immaterial and unused.