BangShiuh
commented
8 months ago The plasma reaction rates (electron collision reactions) is determined by EEDF which is a phase property like temperature. Two-term approximation needs E/N (electric field strength divided by gas number density) to calculate EEDF. Electric field is an external force but not a phase property. I would suggest making a class PlasmaReactor with a member variable electricFieldStrength. We will put PlasmaPhase object into PlasmaReactor, and the EEDF can be calculated in the reactor and set for PlasmaPhase.
QuentinMale
qumale
name: Non-equilibrium plasma including EEDF computation (two-term approximation) about: Computation of an EEDF providing a set of electron collision cross sections and a reduced electric field E/N title: Non-equilibrium plasma including EEDF labels: feature-request assignees: '@QuentinMale, @NicolasBarleon'
Abstract
We aim to solve $\frac{\partial}{\partial \varepsilon}\left(\tilde{W} F_0-\tilde{D} \frac{\partial F_0}{\partial \varepsilon}\right)=\tilde{S}+\tilde{R}$ using numerical methods described in Ref. [1] to obtain rate coefficients for the plasma reactions $k_k = \gamma \int_0^\infty \varepsilon \sigma_k F_0 d \varepsilon$ .
Motivation
Describe the need for the proposed change:
Possible Solutions
Implementation of the numerical methods of Ref. [1] as already done in the open-source code BOLOS (https://github.com/aluque/bolos). Use of the work of @BangShiuh for the cross section reading and usage.
Implementation of new reaction types may be needed to take into account feeding of vibrational energy during collisional processes and fast gas heating (see Section 3.2 Ref. [2]).
Work in progress branch(es) https://github.com/QuentinMale/canteraBS/tree/collision-reaction https://github.com/QuentinMale/canteraBS/tree/canteraPlasma
References
[1] Hagelaar, G. J. M., & Pitchford, L. C. (2005). Solving the Boltzmann equation to obtain electron transport coefficients and rate coefficients for fluid models. Plasma Sources Science and Technology, 14(4), 722–733. https://doi.org/10.1088/0963-0252/14/4/011 [2] Cheng, L., Barleon, N., Cuenot, B., Vermorel, O., & Bourdon, A. (2022). Plasma assisted combustion of methane-air mixtures: Validation and reduction. Combustion and Flame, 240, 111990. https://doi.org/10.1016/j.combustflame.2022.111990