Weakly Nonlinear and Numerical Analysis of Auto-Oscillatory Dynamics in a Solid Propellant Combustion Model

Figure 6

Numerical and analytical values of Θ(0,0,𝑡) (smaller amplitude oscillations) and |(𝜕Φ/𝜕𝑡)(0,𝑡)| (larger amplitude oscillations) along with their frequency power spectra for 𝜖=0.05. In this parameter region, the numerical and analytical solutions are indistinguishable even for large times.