A Four-Zone Model and Nonlinear Dynamic Analysis of Solution Multiplicity of Buoyancy Ventilation in Underground Building

Table 2

Criterion for scenario 1 (k is fixed, α is control parameter and k < 0).

k	α	Realization 1	Realization 2
		No	Stable
		Saddle point of index 2	Stable
		Saddle-focus point of index 2	Stable
		Stable	Stable
		No	Stable
		Saddle point of index 2	Stable
		Saddle-focus point of index 2	Stable
		No	Stable
		Saddle point of index 2	Stable
		No	No
		No	Stable