Glossary
========
.. glossary::
:sorted:
ID
Identification number for a given ITEM (connection, volume,
loadcase, *etc.*).
volume
In a "model" context, Volume refers to a "room", or in a more geeric
manneer, to any volume defined by partitions.
interface
What separates two volumes. It may be partitions, bulkhead, *etc.*. An
interface *may or may not* contain zero, one or more connections.
partition
Physical items defining an :term:`interface`.
connection
venting between two :term:`volumes ` (or at a given :term:`interface`). Connection may
be passive or active. A connection is always associated to one
:term:`interface`. A connection is **oriented**: its positive direction
goes from lowset volume ID to highest volume ID.
dummy connection
A connection that does not exist in reality, but is created with zero
values to create an :term:`interface` in order to get automatically
the calculations results for this interface.
passive connection
A :term:`connection` that does not evolute during the calculations. Grids are
an example of passive connections.
door
In the ESonix context, a door is a passive vent that is assumed existing
during an *openend-doors* initial state run and not existing during a
*closed-doors* initial condition run.
load case
One of the several runs performed during an analysis. One load case
is defined by an explosion occuring in one (or several) compartment(s).
A load case is calculated for a given :term:`configuration`.
merged load case
:term:`load case` involving two (or more) exploded volumes. The exploded
volumes need to be contiguous in reality. The resulting merged volume will
have the equivalent volume equal to the sum of the merged volumes.
configuration
Doors initial conditions for an analysis. Two configurations exist:
*opened-doors*, and *closed-doors*.
discharge coefficient
Coefficient applied to a raw venting area to get an effective venting
area. This coefficient is commonly greater than 0.6 and lower than 0.8,
although greater or lower values may be encountered.
Discharge coefficient is written ``cp`` in ESonix.
opening time
For a decompression item, time to reach its full aperture.
Delta P
Delta pressure between two volumes; commonly noted :math:`\Delta_P`. It
is very common to talk about a :math:`\Delta_P` at a
given interface.
decompression feature
Generic term grouping decompression items such as decompression panels,
grids, doors, *etc.*.
opening hole
Opening in the fuselage taken into account for rapid decompression
analysis.
regular run
(or regular analysis) : regular decompression analysis based on thermodynamical approach
regular analysis
(or regular run) : regular decompression analysis based on thermodynamical approach
combination analysis
combination of several regular analysis featuring a single *regular-like*
set of results.
sensitivity analysis
difference between two or more regular analysis
node
in the ESonix context, a node is an analysis from a given project. A
node can be a :term:`regular run`, a :term:`combination analysis` or a
:term:`sensitivity analysis`.
doc
the *Degree of Complexity* of an anlysis depends on number of volumes,
number of load cases, but also timestep and sampling. This number gives a
clue about capacity of processor and disk storage required for the given
Analysis.
initialisation
In the context of connections, "Initialisation" is an operation occuring
during the connections preprocess phase. It consists in filling any
**empty or blank** cell within the ``i_to_j`` columns will be set to
``0.0``
symmetrization
Operation occuring during the connections preprocess phase. It consists in
filling connections blank ``j_to_i`` data with data coming from ``i_to_j``
columns.
Courant Number
For a given volume, the ratio between the balance of mass flows and the volume's mass.
Details are provided :ref:`adaptive_runtime_parameters`
volume neighborhood zone
Integer >= 0 defining the depth of neighborhood of a given volume.
* If Zone==0, the set of volumes is the volume itself
* if Zone==1, the set of volumes includes the volume itself, AND the first level of neighbors directly connected to the volume itself.
* *etc.*
scenario
Method of project's backup. The backup file is a simple zipped archive containing
batch command file and the relevant spreadsheets.