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8d2d894ae0
- For slow oscillations it can be more intuitive to specify the period. ENH: separate mark/space for Square - makes it easier to tailor the desired intervals. BUG: incorrect square wave fraction with negative phase shifts ENH: additional cosine Function1 STYLE: avoid code duplication by inheriting Cosine/Square from Sine.
127 lines
3.2 KiB
C++
127 lines
3.2 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2017 OpenFOAM Foundation
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Copyright (C) 2020 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "mathematicalConstants.H"
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// * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * * //
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template<class Type>
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inline Foam::scalar Foam::Function1Types::Sine<Type>::cycle
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(
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const scalar t
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) const
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{
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// The cycle: (freq * time) or (time / period)
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return
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(
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frequency_
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? (t - t0_) * frequency_->value(t)
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: (t - t0_) / (period_->value(t) + VSMALL)
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);
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}
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template<class Type>
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inline Foam::scalar
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Foam::Function1Types::Sine<Type>::cosForm(const scalar t) const
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{
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return
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(
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cos(constant::mathematical::twoPi * this->cycle(t))
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* (amplitude_ ? amplitude_->value(t) : 1.0)
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);
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}
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template<class Type>
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inline Foam::scalar
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Foam::Function1Types::Sine<Type>::sinForm(const scalar t) const
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{
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return
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(
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sin(constant::mathematical::twoPi * this->cycle(t))
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* (amplitude_ ? amplitude_->value(t) : 1.0)
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);
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}
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template<class Type>
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inline Foam::scalar
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Foam::Function1Types::Sine<Type>::squareForm
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(
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const scalar t,
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const scalar posFrac
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) const
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{
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const scalar cyc = this->cycle(t);
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return
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(
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// Fraction of incomplete cycle
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((cyc - std::floor(cyc)) < posFrac ? 1.0 : -1.0)
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* (amplitude_ ? amplitude_->value(t) : 1.0)
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);
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}
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template<class Type>
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inline Type Foam::Function1Types::Sine<Type>::cosValue(const scalar t) const
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{
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return
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(
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cosForm(t) * scale_->value(t) + level_->value(t)
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);
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}
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template<class Type>
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inline Type Foam::Function1Types::Sine<Type>::sinValue(const scalar t) const
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{
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return
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(
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sinForm(t) * scale_->value(t) + level_->value(t)
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);
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}
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template<class Type>
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inline Type Foam::Function1Types::Sine<Type>::squareValue
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(
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const scalar t,
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const scalar posFrac
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) const
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{
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return
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(
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squareForm(t, posFrac) * scale_->value(t) + level_->value(t)
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);
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}
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// ************************************************************************* //
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