RnD/reactor
3
0
Fork 0
Code Issues 1 Pull Requests Actions Packages Projects Releases Wiki Activity

Add additional ASM constants, add other sensor handling, fix bug in kla model

Browse Source
This commit is contained in:
p.vanderwilt
2025-11-07 11:59:24 +01:00
parent ffb4080f14
commit a106276ca6
3 changed files with 19 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/reaction_modules/asm3_class Koch.js
View File

@@ -2,6 +2,8 @@ const math = require('mathjs');
const ASM_CONSTANTS = {
S_O_INDEX: 0,
S_NH_INDEX: 3,
S_NO_INDEX: 5,
NUM_SPECIES: 13
};

2
src/reaction_modules/asm3_class.js
View File

@@ -2,6 +2,8 @@ const math = require('mathjs');
const ASM_CONSTANTS = {
S_O_INDEX: 0,
S_NH_INDEX: 3,
S_NO_INDEX: 5,
NUM_SPECIES: 13
};

20
src/specificClass.js
View File

@@ -320,14 +320,14 @@ class Reactor_PFR extends Reactor {
const advection = math.multiply(-1 * math.sum(this.Fs) / (this.A*this.d_x), this.D_op, this.extendedState);
const reaction = this.extendedState.map((state_slice) => this.asm.compute_dC(state_slice, this.temperature));
const transfer = Array.from(Array(this.n_x+2*BC_PADDING), () => new Array(ASM_CONSTANTS.NUM_SPECIES).fill(0));
if (isNaN(this.kla)) { // calculate OTR if kla is not NaN, otherwise use externally calculated OTR
for (let i = BC_PADDING+1; i < BC_PADDING+this.n_x - 1; i++) {
transfer[i][ASM_CONSTANTS.S_O_INDEX] = this.OTR * this.n_x/(this.n_x-2);
}
} else {
for (let i = BC_PADDING+1; i < BC_PADDING+this.n_x - 1; i++) {
transfer[i][ASM_CONSTANTS.S_O_INDEX] = this._calcOTR(this.extendedState[i][ASM_CONSTANTS.S_O_INDEX], this.temperature) * this.n_x/(this.n_x-2);
for (let i = BC_PADDING+1; i < BC_PADDING+this.n_x - 1; i++) {
transfer[i][ASM_CONSTANTS.S_O_INDEX] = this._calcOTR(this.extendedState[i][ASM_CONSTANTS.S_O_INDEX], this.temperature);
}
}
@@ -349,10 +349,19 @@ class Reactor_PFR extends Reactor {
}
_updateMeasurement(measurementType, value, position, context) {
const grid_pos = Math.round(context.distance / this.config.length * this.n_x);
// naive approach for reconciling measurements and simulation
// could benefit from Kalman filter?
switch(measurementType) {
case "quantity (oxygen)":
const grid_pos = Math.round(context.distance / this.config.length * this.n_x);
this.state[grid_pos][0] = value; // naive approach for reconciling measurements and simulation
this.state[grid_pos][ASM_CONSTANTS.S_O_INDEX] = value;
break;
case "quantity (ammonium)":
this.state[grid_pos][ASM_CONSTANTS.S_NH_INDEX] = value;
break;
case "quantity (nox)":
this.state[grid_pos][ASM_CONSTANTS.S_NO_INDEX] = value;
break;
default:
super._updateMeasurement(measurementType, value, position, context);
@@ -375,6 +384,7 @@ class Reactor_PFR extends Reactor {
const BC_C_in = math.multiply(1 / math.sum(this.Fs), [this.Fs], this.Cs_in)[0];
const BC_dispersion_term = this.D*this.A/(math.sum(this.Fs)*this.d_x);
this.extendedState[BC_PADDING] = math.multiply(1/(1+BC_dispersion_term), math.add(BC_C_in, math.multiply(BC_dispersion_term, this.extendedState[BC_PADDING+1])));
// Numerical boundary condition
this.extendedState[BC_PADDING-1] = math.add(math.multiply(2, this.extendedState[BC_PADDING]), math.multiply(-2, this.extendedState[BC_PADDING+2]), this.extendedState[BC_PADDING+3]);
} else {
// Neumann BC (no flux)