tcngf-pf.1: add note on overridden permeability values in transient simulations - cngf-pf - continuum model for granular flows with pore-pressure dynamics (renamed from 1d_fd_simple_shear)
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---
(DIR) commit a91a9d97e214821989e66263c3de85574dc6871e
(DIR) parent 04d61fb2168220e586ba0859a554124f98b6d842
(HTM) Author: Anders Damsgaard <anders@adamsgaard.dk>
Date: Tue, 26 Jan 2021 15:30:08 +0100
cngf-pf.1: add note on overridden permeability values in transient simulations
Diffstat:
M cngf-pf.1 | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
---
(DIR) diff --git a/cngf-pf.1 b/cngf-pf.1
t@@ -123,7 +123,12 @@ Factor relating dilatancy angle to the volume fraction [-] (default
Darcian intrinsic permeability of granular material [m^2] (default
1.9e-15).
Only relevant with fluid dynamics enabled
-.Fl ( F ) .
+.Fl ( F ) ,
+and without transient dynamics.
+In transient simulations
+.Fl ( T )
+the permeability value is overridden by the Kozeny-Carman relationship
+(k = d^2/180 * phi^3 * (1 - phi)).
.It Fl L Ar length
Simulation domain length [m] (default 1).
.It Fl l Ar applied-shear-vel-limit