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modify for coupling-cpp and hpp
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hamidrezanorouzi
284
src/Interaction/Models/contactForce/linearCF.hpp
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284
src/Interaction/Models/contactForce/linearCF.hpp
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/*------------------------------- phasicFlow ---------------------------------
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O C enter of
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O O E ngineering and
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O O M ultiscale modeling of
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OOOOOOO F luid flow
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------------------------------------------------------------------------------
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Copyright (C): www.cemf.ir
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email: hamid.r.norouzi AT gmail.com
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------------------------------------------------------------------------------
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Licence:
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This file is part of phasicFlow code. It is a free software for simulating
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granular and multiphase flows. You can redistribute it and/or modify it under
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the terms of GNU General Public License v3 or any other later versions.
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phasicFlow is distributed to help others in their research in the field of
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granular and multiphase flows, but WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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-----------------------------------------------------------------------------*/
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#ifndef __linearCF_hpp__
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#define __linearCF_hpp__
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#include "types.hpp"
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#include "symArrays.hpp"
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namespace pFlow::cfModels
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{
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template<bool limited=true>
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class linear
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{
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public:
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struct contactForceStorage
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{
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realx3 overlap_t_ = 0.0;
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};
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struct linearProperties
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{
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real kn_ = 1000.0;
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real kt_ = 800.0;
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real ethan_ = 0.0;
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real ethat_ = 0.0;
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real mu_ = 0.00001;
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INLINE_FUNCTION_HD
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linearProperties(){}
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INLINE_FUNCTION_HD
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linearProperties(real kn, real kt, real etha_n, real etha_t, real mu ):
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kn_(kn), kt_(kt), ethan_(etha_n),ethat_(etha_t), mu_(mu)
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{}
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INLINE_FUNCTION_HD
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linearProperties(const linearProperties&)=default;
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INLINE_FUNCTION_HD
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linearProperties& operator=(const linearProperties&)=default;
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INLINE_FUNCTION_HD
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~linearProperties() = default;
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};
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protected:
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using LinearArrayType = symArray<linearProperties>;
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int32 numMaterial_ = 0;
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ViewType1D<real> rho_;
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LinearArrayType linearProperties_;
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/**/
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bool readLinearDictionary(const dictionary& dict)
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{
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auto kn = dict.getVal<realVector>("kn");
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auto kt = dict.getVal<realVector>("kt");
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auto en = dict.getVal<realVector>("en");
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auto et = dict.getVal<realVector>("et");
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auto mu = dict.getVal<realVector>("mu");
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auto nElem = kn.size();
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if(nElem != kt.size())
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{
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fatalErrorInFunction<<
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"sizes of kn("<<nElem<<") and kt("<<kt.size()<<") do not match.\n";
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return false;
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}
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if(nElem != en.size())
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{
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fatalErrorInFunction<<
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"sizes of kn("<<nElem<<") and en("<<en.size()<<") do not match.\n";
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return false;
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}
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if(nElem != et.size())
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{
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fatalErrorInFunction<<
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"sizes of kn("<<nElem<<") and et("<<et.size()<<") do not match.\n";
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return false;
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}
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if(nElem != mu.size())
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{
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fatalErrorInFunction<<
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"sizes of kn("<<nElem<<") and mu("<<mu.size()<<") do not match.\n";
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return false;
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}
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// check if size of vector matchs a symetric array
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uint32 nMat;
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if( !LinearArrayType::getN(nElem, nMat) )
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{
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fatalErrorInFunction<<
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"sizes of properties do not match a symetric array with size ("<<
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numMaterial_<<"x"<<numMaterial_<<").\n";
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return false;
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}
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else if( numMaterial_ != nMat)
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{
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fatalErrorInFunction<<
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"size mismatch for porperties. \n"<<
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"you supplied "<< numMaterial_<<" items in materials list and "<<
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nMat << " for other properties.\n";
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return false;
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}
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realVector etha_n(nElem);
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realVector etha_t(nElem);
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forAll(i , kn)
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{
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etha_n[i] = -2.0*log(en[i])*sqrt(kn[i])/
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sqrt(pow(log(en[i]),2.0)+ pow(Pi,2.0));
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etha_t[i] = -2.0*log( et[i]*sqrt(kt[i]) )/
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sqrt(pow(log(et[i]),2.0)+ pow(Pi,2.0));
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}
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Vector<linearProperties> prop(nElem);
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forAll(i,kn)
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{
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prop[i] = {kn[i], kt[i], etha_n[i], etha_t[i], mu[i]};
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}
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linearProperties_.assign(prop);
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return true;
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}
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static const char* modelName()
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{
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if constexpr (limited)
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{
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return "linearLimited";
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}
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else
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{
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return "linearNonLimited";
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}
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return "";
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}
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public:
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TypeInfoNV(modelName());
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INLINE_FUNCTION_HD
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linear(){}
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linear(int32 nMaterial, const ViewType1D<real>& rho, const dictionary& dict)
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:
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numMaterial_(nMaterial),
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rho_("rho",nMaterial),
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linearProperties_("linearProperties",nMaterial)
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{
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Kokkos::deep_copy(rho_,rho);
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if(!readLinearDictionary(dict))
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{
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fatalExit;
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}
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}
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INLINE_FUNCTION_HD
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linear(const linear&) = default;
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INLINE_FUNCTION_HD
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linear(linear&&) = default;
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INLINE_FUNCTION_HD
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linear& operator=(const linear&) = default;
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INLINE_FUNCTION_HD
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linear& operator=(linear&&) = default;
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INLINE_FUNCTION_HD
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~linear()=default;
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INLINE_FUNCTION_HD
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int32 numMaterial()const
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{
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return numMaterial_;
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}
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//// - Methods
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INLINE_FUNCTION_HD
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void contactForce
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(
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const real dt,
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const int32 i,
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const int32 j,
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const int32 propId_i,
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const int32 propId_j,
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const real Ri,
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const real Rj,
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const real ovrlp_n,
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const realx3& Vr,
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const realx3& Nij,
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contactForceStorage& history,
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realx3& FCn,
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realx3& FCt
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)const
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{
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auto prop = linearProperties_(propId_i,propId_j);
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real vrn = dot(Vr, Nij);
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realx3 Vt = Vr - vrn*Nij;
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history.overlap_t_ += Vt*dt;
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real mi = 3*Pi/4*pow(Ri,3.0)*rho_[propId_i];
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real mj = 3*Pi/4*pow(Rj,3.0)*rho_[propId_j];
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real sqrt_meff = sqrt((mi*mj)/(mi+mj));
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FCn = (-prop.kn_ * ovrlp_n - sqrt_meff * prop.ethan_ * vrn)*Nij;
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FCt = -prop.kt_ * history.overlap_t_ - sqrt_meff * prop.ethat_*Vt;
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real ft = length(FCt);
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real ft_fric = prop.mu_ * length(FCn);
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if(ft > ft_fric)
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{
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if( length(history.overlap_t_) >static_cast<real>(0.0))
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{
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if constexpr (limited)
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{
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FCt *= (ft_fric/ft);
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history.overlap_t_ = - (FCt/prop.kt_);
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}
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else
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{
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FCt = (FCt/ft)*ft_fric;
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}
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//cout<<"friction is applied here \n";
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}
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else
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{
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FCt = 0.0;
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}
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}
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}
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};
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} //pFlow::cfModels
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#endif
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