Low-pH viral inactivation simulation

1 inlet -> 1 outlet (hold; reports log reduction)

Governing equations

The exact equations the solver works for a low-ph viral inactivation — the same math shown in the app's "Theory" panel, not a black box.

$N/N_0$

surviving virus fraction

$k$

kill rate [log10 per minute]

$k_r$

kill rate of the resistant sub-population

$f$

resistant fraction

$t$

hold time [min]

$\mathrm{LRV}$

log reduction value; its ceiling is set by the resistant tail

Parameters

rate_constant [log10 per minute, from your own validation run], hold_time [s]. Optional: resistant_fraction + resistant_rate_constant (the biphasic tail that caps the achievable reduction), temperature + reference_temperature + activation_energy (Arrhenius correction), target_log_reduction (warns when unreachable), product_recovery [declared low-pH yield, default 1.0].

Example flowsheets that use it