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halfCosineRampI.H
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1/*---------------------------------------------------------------------------*\
2 ========= |
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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5 \\ / A nd | www.openfoam.com
6 \\/ M anipulation |
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8 Copyright (C) 2017 OpenFOAM Foundation
9-------------------------------------------------------------------------------
10License
11 This file is part of OpenFOAM.
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26\*---------------------------------------------------------------------------*/
27
28#include "halfCosineRamp.H"
30
31// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
32
34(
35 const scalar t
36) const
37{
38 return 0.5*(1 - cos(constant::mathematical::pi*linearRamp(t)));
39}
40
41
42// ************************************************************************* //
virtual scalar value(const scalar t) const
Return value for time t.
scalar linearRamp(const scalar t) const
Simple linear ramp function that forms the basis of many more complex ramp functions.
Definition ramp.H:117
constexpr scalar pi(M_PI)
dimensionedScalar cos(const dimensionedScalar &ds)