Dynamics

Combined aerosol population dynamics: condensation growth (DiameterGrowthRate) and Brownian coagulation (BrownianCoagulationCoefficient + MonodisperseCoagulation), coupled so that the Fuchs-form coagulation coefficient K_12 drives the number-concentration ODE and the shared temperature T and particle density ρ_p parameterize both growth and coagulation. Implements Seinfeld & Pandis (2006) Ch. 13 Eqs. 13.11-13.13 (condensation), 13.47 and Table 13.1 (coagulation coefficient), and 13.65-13.67 (number-concentration dynamics). Migrated from Aerosol.jl src/dynamics.jl:279 (esm-540).

Brownian coagulation coefficient K_12 for two particles using the Fuchs interpolation formula (Seinfeld & Pandis 2006, Table 13.1). Valid across the continuum, transition, and free-molecular regimes. Computes Knudsen numbers, Cunningham slip corrections, Brownian diffusion coefficients, mean thermal velocities, particle mean free paths, and the Fuchs interpolation parameters g_1, g_2 as intermediate observed variables before assembling K_12. Migrated from Aerosol.jl src/dynamics.jl:75.

Diameter growth rate due to vapor condensation in the continuum regime (Seinfeld & Pandis 2006, Ch. 13, Eq. 13.11-13.13). Algebraic growth parameter A = 4·D_diff·M_i·Δp / (R_gas·T·ρ_p), algebraic growth rate I_D = A/D_p, ODE D(D_p) = I_D. Source: Aerosol.jl@c8c640bb:src/dynamics.jl:22.

5-bin discrete coagulation model for a monodisperse initial distribution with constant coagulation coefficient (Seinfeld & Pandis 2006, Ch. 13, Eqs. 13.59, 13.67, 13.71). Tracks the evolution of five k-mer bins (N1..N5) under Brownian coagulation. Source: Aerosol.jl@c8c640bb:src/dynamics.jl:221 (n_bins=5 instantiation, esm-isv).

Total aerosol number concentration evolution for a monodisperse aerosol undergoing Brownian coagulation with constant coagulation coefficient (Seinfeld & Pandis 2006, Ch. 13, Eqs. 13.65-13.67). ODE: dN/dt = -K·N²/2; algebraic characteristic coagulation time τ_c = 2/(K·N₀). Source: Aerosol.jl@c8c640bb:src/dynamics.jl:178.