GRI Mechanism Reduction

The Python program performs a chemical reaction mechanism reduction using the Cantera library. This is an introductory code on reduction and its effects on different cases.

It does the following:

1. Parses Reduction Parameters: It reads reduction parameters like temperature, pressure, and equivalence ratio from a file Reduction_Parameters.txt, storing these in a dictionary.
2. Simulates Ignition Delay and Temperature: For different initial conditions (temperature, pressure, and fuel mixture), it sets up a constant pressure reactor to simulate the ignition process, calculates the ignition delay (time it takes for a significant temperature rise), and records the maximum temperature.
3. Sensitivity Analysis: The program uses sensitivity analysis for reactions in the mechanism to determine their importance.
4. Mechanism Reduction: It removes unimportant reactions to create a reduced chemical mechanism and reruns the simulation with this reduced mechanism.
5. Plots Results: It generates and saves plots comparing ignition delay and maximum temperature against the number of reactions for each test case.

The resulting test cases data is shown below:

Case number	Temperature (Kelvin)	Pressure (Bar)	Equivalence Ratio (No Units)	Reduced mechanism for Ignition Delay (Number of reactions)	Reduced mechanism for Maximum Temperature (Number of reactions)
1	950	3	0.5	72	163
2	950	3	1	62	164
3	950	3	1.5	63	245
4	950	4	0.5	71	155
5	950	4	1	65	199
6	950	4	1.5	58	230
7	950	5	0.5	65	157
8	950	5	1	67	208
9	950	5	1.5	60	244
10	1050	3	0.5	49	180
11	1050	3	1	43	167
12	1050	3	1.5	99	218
13	1050	4	0.5	57	208
14	1050	4	1	44	164
15	1050	4	1.5	63	240
16	1050	5	0.5	83	147
17	1050	5	1	52	158
18	1050	5	1.5	65	231
19	1150	3	0.5	50	149
20	1150	3	1	72	257
21	1150	3	1.5	66	262
22	1150	4	0.5	57	192
23	1150	4	1	57	212
24	1150	4	1.5	63	261
25	1150	5	0.5	48	173
26	1150	5	1	68	226
27	1150	5	1.5	69	252