commit 3208a9abade38141c456316f2e4d638574e71fd1
parent dd2e030c17b514f61e83ce83dd4dc5c4299a9497
Author: Vincent Forest <vincent.forest@meso-star.com>
Date: Fri, 4 Mar 2022 10:00:55 +0100
Update the overview part of the README
Notify the support of non linear radiative transfer.
Diffstat:
1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/README.md b/README.md
@@ -20,16 +20,16 @@ The hypothesis these algorithms are based upon are the following:
- *convection*: fluid media are supposed to be isothermal, even if their
temperature may vary with time. This hypothesis relies on the assumption of
perfectly agitated fluids.
-- *radiation*: local radiative transfer is solved by an iterative numerical
- method (Picard algorithm) that requires the knowledge of a reference
- temperature field. At the basic level (one level of recursion), and using a
- uniform reference temperature field, this algorithm translates into the
- hypothesis of a linearized radiative transfer. Using a higher order or
- recursion makes possible to converge the result closer to the solution of a
- rigorous spectrally-integrated radiative transfer (a difference of
- temperatures to the power 4 when integrated over the whole spectrum). The
- higher the recursion order, to better will be the convergence of the
- algorithm.
+- *radiation*: local radiative transfer is solved by an [iterative numerical
+ method](https://hal.archives-ouvertes.fr/tel-03266863/) (Picard algorithm)
+ that requires the knowledge of a reference temperature field. At the basic
+ level (one level of recursion), and using a uniform reference temperature
+ field, this algorithm translates into the hypothesis of a linearized
+ radiative transfer. Using a higher order or recursion makes possible to
+ converge the result closer to the solution of a rigorous
+ spectrally-integrated radiative transfer (a difference of temperatures to the
+ power 4 when integrated over the whole spectrum). The higher the recursion
+ order, to better will be the convergence of the algorithm.
In Stardis-Solver the system to simulate is represented by a *scene* whose
geometry defines the contour of the object only: in contrast to legacy thermal
@@ -61,7 +61,7 @@ The main features of the solver are currently:
been reached; when internal power sources or imposed fluxes are taken into
account, additional contributions to the weight must be continuously
evaluated by the thermal conduction algorithm, but these contributions are
- proportional to the local dissipated power/imposed flux. In any case, the
+ proportional to the local dissipated power/imposed flux. In any case, the
position and date at the end of each thermal path (and also accumulation
coefficients) can be stored during a first complete Monte-Carlo simulation.
This information, known as the Green function, can then be used in (very
@@ -70,7 +70,8 @@ The main features of the solver are currently:
flux). Note that when using the Green function, only boundary and initial
conditions (as well as internal power sources) can be modified: in
particular, the geometry, thermal properties and exchange coefficients have
- to remain identical.
+ to remain identical. Furthermore, the green function is only valid under the
+ assumption of linearized radiative transfer.
- *path visualization*: Stardis-Solver can store the complete spatial and
temporal position along a set of thermal paths, for latter visualization. In
addition of their position and, each thermal path vertex register additional
@@ -82,7 +83,7 @@ Stardis-Solver is currently used in two frameworks. The
tools is the reference workflow of Stardis-Solver. It proposes a complete
toolchain from fileformats describing the scene (geometry, thermal properties,
limit and boundary conditions) to computations and post-treatments of the
-results ([Stardis-Green](https://gitlab.com/meso-star/stardis-green.git).
+results ([Stardis-Green](https://gitlab.com/meso-star/stardis-green.git)).
Stardis-Solver is also integrated into
[SYRTHES](https://www.edf.fr/en/the-edf-group/world-s-largest-power-company/activities/research-and-development/scientific-communities/simulation-softwares?logiciel=10818),
the general thermal free software developed by Electricité De France (EDF).
