-
Notifications
You must be signed in to change notification settings - Fork 61
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
filtration, W: mobility constant to 1e-7
Former-commit-id: 63d109e
- Loading branch information
1 parent
6ecf9fc
commit b50832e
Showing
19 changed files
with
679 additions
and
125 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| /* --------------------------------------------------------------------- | ||
| * | ||
| * Copyright (C) 2019 - by the Lethe authors | ||
| * | ||
| * This file is part of the Lethe library | ||
| * | ||
| * The Lethe library is free software; you can use it, redistribute | ||
| * it, and/or modify it under the terms of the GNU Lesser General | ||
| * Public License as published by the Free Software Foundation; either | ||
| * version 2.1 of the License, or (at your option) any later version. | ||
| * The full text of the license can be found in the file LICENSE at | ||
| * the top level of the Lethe distribution. | ||
| * | ||
| * --------------------------------------------------------------------- | ||
| */ | ||
|
|
||
| #ifndef lethe_cahn_hilliard_filter_h | ||
| #define lethe_cahn_hilliard_filter_h | ||
|
|
||
|
|
||
| #include <core/parameters_multiphysics.h> | ||
|
|
||
| /** | ||
| * @brief CahnHilliardFilterBase class allows phase fraction filtering | ||
| */ | ||
| class CahnHilliardFilterBase | ||
| { | ||
| public: | ||
| CahnHilliardFilterBase() | ||
| {} | ||
|
|
||
| /** | ||
| * @brief Instantiates and returns a pointer to a CahnHilliardFilterBase | ||
| * object by casting it to the proper child class | ||
| * | ||
| * @param phase_filter_parameters CahnHilliard model parameters | ||
| */ | ||
| static std::shared_ptr<CahnHilliardFilterBase> | ||
| model_cast(const Parameters::CahnHilliard &cahn_hilliard_parameters); | ||
|
|
||
| /** | ||
| * @brief filter_phase calculates the value of the filtered phase fraction | ||
| * @param unfiltered_phase Value of the phase fraction before applying the filter | ||
| * @return Value of the phase fraction after applying the filter | ||
| */ | ||
| virtual double | ||
| filter_phase(const double &unfiltered_phase) = 0; | ||
| }; | ||
|
|
||
| /** | ||
| * @brief CahnHilliardNoFilter class is used as a default when no | ||
| * filter is applied to the phase fraction | ||
| */ | ||
| class CahnHilliardNoFilter : public CahnHilliardFilterBase | ||
| { | ||
| public: | ||
| CahnHilliardNoFilter() | ||
| {} | ||
|
|
||
| /** | ||
| * @brief filter_phase calculates the value of the filtered phase fraction | ||
| * @param unfiltered_phase Value of the phase fraction before applying the filter | ||
| * @return unfiltered_phase | ||
| */ | ||
| virtual double | ||
| filter_phase(const double &unfiltered_phase) override | ||
| { | ||
| return unfiltered_phase; | ||
| } | ||
| }; | ||
|
|
||
| /** | ||
| * @brief CahnHilliardTanhFilter class is used to calculate | ||
| * a filtered phase for Cahn-Hilliard simulations. The filtered phase is defined | ||
| * as | ||
| * $$\phi_f = \tanh(\beta(\phi-0.5)) $$. | ||
| */ | ||
| class CahnHilliardTanhFilter : public CahnHilliardFilterBase | ||
| { | ||
| public: | ||
| CahnHilliardTanhFilter(const double beta, | ||
| const double well_height, | ||
| const double epsilon) | ||
| : beta(beta) | ||
| , well_height(well_height) | ||
| , epsilon(epsilon) | ||
| {} | ||
|
|
||
| /** | ||
| * @brief filter_phase calculates the value of the filtered phase fraction | ||
| * @param unfiltered_phase Value of the phase fraction before applying the filter | ||
| * @return Value of the phase fraction after applying the tanh filter | ||
| */ | ||
| virtual double | ||
| filter_phase(const double &unfiltered_phase) override | ||
| { | ||
| // return tanh((std::sqrt(2*well_height)/(epsilon)) * unfiltered_phase); | ||
| // return tanh(beta * sgn(unfiltered_phase)*std::sqrt(std::abs(unfiltered_phase))); | ||
| //std::cout<<"Filtered value computed = " << tanh(beta*unfiltered_phase)<< std::endl; | ||
| return tanh(beta * unfiltered_phase); | ||
| //return tanh(beta * sgn(unfiltered_phase)*unfiltered_phase*unfiltered_phase); | ||
| } | ||
|
|
||
| private: | ||
| // User-defined parameter that influences the definition of the interface | ||
| const double beta; | ||
| const double well_height; | ||
| const double epsilon; | ||
| }; | ||
|
|
||
| #endif |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.