-/* ---------------------------------------------------------------------
+/* -----------------------------------------------------------------------------
*
- * Copyright (C) 2021 by the deal.II authors
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright (C) 2021 by Hongfeng Ma
+ * Copyright (C) 2021 by Tatiana E. Itina
*
- * This file is part of the deal.II library.
+ * This file is part of the deal.II code gallery.
*
- * The deal.II 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.md at
- * the top level directory of deal.II.
- *
- * ---------------------------------------------------------------------
+ * -----------------------------------------------------------------------------
*
* Authors: Hongfeng Ma, 2021.
*/
+/* -----------------------------------------------------------------------------
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright (C) 2021 by Hongfeng Ma
+ * Copyright (C) 2021 by Tatiana E. Itina
+ *
+ * This file is part of the deal.II code gallery.
+ *
+ * -----------------------------------------------------------------------------
+ */
//#----------------------------------------------------------
//#
+/* -----------------------------------------------------------------------------
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright (C) 2021 by Hongfeng Ma
+ * Copyright (C) 2021 by Tatiana E. Itina
+ *
+ * This file is part of the deal.II code gallery.
+ *
+ * -----------------------------------------------------------------------------
+ */
// # physics constants
double global_PI = 3.1415927;
+/* -----------------------------------------------------------------------------
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright (C) 2021 by Hongfeng Ma
+ * Copyright (C) 2021 by Tatiana E. Itina
+ *
+ * This file is part of the deal.II code gallery.
+ *
+ * -----------------------------------------------------------------------------
+ */
+
//#----------------------------------------------------------
//#
//# This file defines the boundary and initial conditions