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1// LIC// ====================================================================
2// LIC// This file forms part of oomph-lib, the object-oriented,
3// LIC// multi-physics finite-element library, available
4// LIC// at http://www.oomph-lib.org.
5// LIC//
6// LIC// Copyright (C) 2006-2022 Matthias Heil and Andrew Hazel
7// LIC//
8// LIC// This library is free software; you can redistribute it and/or
9// LIC// modify it under the terms of the GNU Lesser General Public
11// LIC// version 2.1 of the License, or (at your option) any later version.
12// LIC//
13// LIC// This library is distributed in the hope that it will be useful,
14// LIC// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// LIC// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16// LIC// Lesser General Public License for more details.
17// LIC//
18// LIC// You should have received a copy of the GNU Lesser General Public
19// LIC// License along with this library; if not, write to the Free Software
20// LIC// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21// LIC// 02110-1301 USA.
22// LIC//
23// LIC// The authors may be contacted at oomph-lib@maths.man.ac.uk.
24// LIC//
25// LIC//====================================================================
26// Non-inline member function of the flux transport elements class
27
29
30namespace oomph
31{
32 //=========================================================
33 /// Return the flux as a function of the unknowns
34 //=========================================================
35 template<unsigned DIM>
38 {
39 // Get the wind
40 Vector<double> W(DIM);
41 Vector<double> s(DIM), x(DIM);
42 // Dummy integration point
43 unsigned ipt = 0;
45
46 // Flux is the wind multiplied by the flux
47 for (unsigned j = 0; j < DIM; j++)
48 {
49 f(0, j) = W[j] * u[0];
50 }
51 }
52
53 //======================================================================
54 /// Return the flux derivatives as a function of the unknowns
55 //=====================================================================
56 template<unsigned DIM>
59 {
60 const unsigned n_flux = this->nflux();
61
62 // Get the wind
63 Vector<double> W(DIM);
64 Vector<double> s(DIM), x(DIM);
65 // Dummy integration point
66 unsigned ipt = 0;
68
69 df_du.initialise(0.0);
70
71 for (unsigned i = 0; i < n_flux; i++)
72 {
73 for (unsigned j = 0; j < DIM; j++)
74 {
75 df_du(i, j, i) = W[j];
76 }
77 }
78 }
79
83
84} // namespace oomph
static char t char * s
Definition: cfortran.h:568
cstr elem_len * i
Definition: cfortran.h:603
////////////////////////////////////////////////////////////////// //////////////////////////////////...
Definition: matrices.h:1370
void initialise(const T &val)
Initialise all values in the tensor to val.
Definition: matrices.h:1642