DragIntegrator.hpp

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// -------------------------------------------------------//
//
// SHAMROCK code for hydrodynamics
// Copyright (c) 2021-2026 Timothée David--Cléris <tim.shamrock@proton.me>
// SPDX-License-Identifier: CeCILL Free Software License Agreement v2.1
// Shamrock is licensed under the CeCILL 2.1 License, see LICENSE for more information
//
// -------------------------------------------------------//
 
#pragma once
 
#include "shambackends/vec.hpp"
#include "shammodels/common/amr/NeighGraph.hpp"
#include "shammodels/ramses/Solver.hpp"
#include "shammodels/ramses/modules/SolverStorage.hpp"
#include "shamrock/scheduler/ComputeField.hpp"
 
namespace shammodels::basegodunov::modules {
 
    template<class Tvec, class TgridVec>
    class DragIntegrator {
 
        public:
        using Tscal                      = shambase::VecComponent<Tvec>;
        using Tgridscal                  = shambase::VecComponent<TgridVec>;
        static constexpr u32 dim         = shambase::VectorProperties<Tvec>::dimension;
        static constexpr u32 split_count = shambase::pow_constexpr<dim>(2);
 
        using Config           = SolverConfig<Tvec, TgridVec>;
        using Storage          = SolverStorage<Tvec, TgridVec, u64>;
        using u_morton         = u64;
        using AMRBlock         = typename Config::AMRBlock;
        using OrientedAMRGraph = OrientedAMRGraph<Tvec, TgridVec>;
 
        ShamrockCtx &context;
        Config &solver_config;
        Storage &storage;
 
        DragIntegrator(ShamrockCtx &context, Config &solver_config, Storage &storage)
            : context(context), solver_config(solver_config), storage(storage) {}
 
        void involve_with_no_src(Tscal dt);
        void enable_irk1_drag_integrator(Tscal dt);
        void enable_expo_drag_integrator(Tscal dt);
 
        private:
        inline PatchScheduler &scheduler() { return shambase::get_check_ref(context.sched); }
    };
 
} // namespace shammodels::basegodunov::modules