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[com5]: set detrainment to False #1259

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Merged
fso42 merged 2 commits into from
Apr 7, 2026
Merged

[com5]: set detrainment to False #1259

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062b3bb
set detrainment False in com5 ini
awirb Apr 7, 2026
4244e3c
update docs
awirb Apr 7, 2026
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15 changes: 13 additions & 2 deletions avaframe/com5SnowSlide/com5SnowSlideCfg.ini
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Expand Up @@ -60,6 +60,17 @@ minDistCohesion = 1.0e-3
# cohesive surface tension used as elasticity modulus [N/m²]
cohesiveSurfaceTension = 50000

#++++++++++++ Resistance force parameters
# characteristic coefficient
#++++++++++++ Resistance model
# default setup:
ResistanceModel = default
# At each time step, ResistanceModel default applies increased friction and optional detrainment (see below). Only relevant in resistance areas.
# NOTE: development setup; parameter values need more testing and calibration!!

# parameter for increased friction in resistance areas
# com5 uses an extremely high value to represent e.g. buildings
cResH = 30000

# Apply detrainment in resistance areas in accordance with the flow thickness and flow velocity thresholds specified below.
# if False - only increased friction is applied in resistance areas
detrainment = False

6 changes: 6 additions & 0 deletions docs/moduleCom5SnowSlide.rst
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Expand Up @@ -40,6 +40,8 @@ Input

The standard inputs required to perform a simulation run using :py:mod:`com1DFA`
can be found here: :ref:`moduleCom1DFA:Input`.
In contrast to :py:mod:`com1DFA`, in :py:mod:`com5SnowSlide`, resistance areas represent areas of rigid obstacles such
as buildings.
There is a run script to perform a snow slide com1DFA run: :py:mod:`runCom5SnowSlide.py`,
and the configuration settings can be found in ``com5SnowSlide/com5SnowSlideCfg.ini``.
The snow slide-specific parameters are:
Expand All @@ -50,6 +52,8 @@ The snow slide-specific parameters are:

* the Young modulus in N/m² ``cohesiveSurfaceTension``

* resistance areas: extreme values of cResH to represent buildings and detrainment set to False

However, also several other parameters, for example the particle initialization method,
friction model and parameters, are changed compared to the default configuration of :py:mod:`com1DFA` and listed
in the ``com5SnowSlide/com5SnowSlideCfg.ini`` in the com1DFA_override section.
Expand All @@ -67,6 +71,8 @@ premises:

* valid for altitude levels > 500 m and < 1,500 m sea level

* resistance areas represent buildings


Initialization of bonds
-------------------------
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