Differences

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--- doc:user:integration:scheme:dynexpl [2015/10/09 16:33] – [Le schema Tchamwa (Not Validated !)] wautelet
+++ doc:user:integration:scheme:dynexpl [2022/12/21 11:35] (current) – [New Metafor Version > 2422] boman
@@ Line 21: / Line 21: @@
 This scheme is conditionally stable (time step limited) and non dissipative.
-==== alpha-generalized scheme ====
+==== Alpha-generalized scheme ====
 Same relations as in the implicit [[dynimpl|alpha-generalized]] scheme, but with the parameter used to weight internal and external forces equal to 1, leading to :
@@ Line 40: / Line 40: @@
 Conditionally stable.
-==== Le schema Tchamwa (Not Validated !)====
+==== Tchamwa Scheme ====
 Explicit algorithm where numerical dissipation is monitored by the parameter $\phi$.
@@ Line 61: / Line 63: @@
   * $$\phi = 1 \mbox{ if } \rho_\beta = 1 $$
-===== Data set =====
+===== Input file =====
 See [[dynimpl|dynamic implicit]] scheme for definition of density and initial velocities.
-==== Choosing the algorithm ====
+==== Old Metafor Version <= 2422 ====
-^       Scheme       ^  ''MDE_NDYN''  ^  ''MDR_ECHR''  ^
+=== Choosing the algorithm ===
-| Chung Hulbert       |       3        |       X      |
-| Différence centrée  |       1        |              |
+^       Scheme         ^  ''MDE_NDYN''  ^  ''MDR_ECHR''  ^
-| Tchamwa             |       6        |       X      |
+| Certered difference  |       1        |                |
+| Chung Hulbert        |       3        |       X        |
+| Tchamwa              |       6        |       X        |
 (see [[doc:user:integration:general:parameters]])
+==== New Metafor Version > 2422 ====
+=== Centered Difference ===
+<code>
+ti = CentralDifferenceTimeIntegration(metafor)
+metafor.setTimeIntegration(ti)
+</code>
+=== Chung Hulbert ===
+<code>
+ti = ChExplicitTimeIntegration(metafor)
+ti.setRhoB(_rhoB)
+metafor.setTimeIntegration(ti)
+</code>
+The parameter ''_rhoB'' is the spectral radius at bifurcation point ([0, 1]). The default value is 0.8182.
+=== Tchamwa ===
+<code>
+ti = TchamwaExplicitTimeIntegration(metafor)
+ti.setRhoB(_rhoB)
+metafor.setTimeIntegration(ti)
+</code>
+The parameter ''_rhoB'' is the spectral radius at bifurcation point ([0, 1]). The default value is 0.8182.
 Other parameters : see [[quasistatique]]