GreenPolyProducts/cantera
5
0
Fork 0
mirror of https://github.com/Cantera/cantera.git synced 2025-02-25 18:55:29 -06:00
Code Issues Packages Projects Releases Wiki Activity

[Doc] Improve wording about automatic third-body detection

Browse Source 
Fixes Cantera/cantera-website#262
This commit is contained in:
Ray Speth 2024-01-08 21:11:26 -05:00 committed by Ray Speth
parent b294740bb8
commit fb53e9618b
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
doc/sphinx/reference/kinetics/reaction-rates.md
View File

@ -25,9 +25,10 @@ parameterizations such as the [modified Arrhenius](sec-arrhenius-rate) form.
:class: tip
An elementary reaction with an Arrhenius reaction rate can be defined in the YAML format
using the [`elementary`](sec-yaml-elementary) reaction `type`, or by omitting the
reaction `type` entry, as it represents the default. In case the `type` entry is omitted
and a species occurs on both sides of the reaction equation, Cantera infers that the
reaction type is [`three-body`](sec-yaml-three-body).
reaction `type` entry, as it represents the default. An exception to this default is
when the same species occurs on both sides of the reaction equation, in which case the
reaction is treated as a
[three-body reaction for a specific collider](sec-three-body-specific-collider).
```
(sec-three-body-reaction)=
@ -69,6 +70,9 @@ The rate coefficient $k_f(T)$ may be implemented using any rate parameterization
supported by Cantera, not just the modified Arrhenius form.
:::
(sec-three-body-specific-collider)=
### Collider-specific rate parameterizations
Sometimes, accounting for a particular third body's collision efficiency may require an
alternate set of rate parameters entirely. In this case, two reactions are written:
@ -79,7 +83,8 @@ $$
$$
where the third-body efficiency for C in the first reaction should be explicitly set to
zero.
zero. For the second reaction, the efficiencies will automatically be set to one for C
and zero for all other colliders.
```{admonition} YAML Usage
:class: tip