Utimate Limit State (ULS)
Will it break? (collapse check under extreme loads)
Serviceability Limit State (SLS)
Will it still work properly? (serviceability check under normal loads)
Special Cases of n
n = 0 : Isobaric (constant pressure) → p=const
n = 1 : Isothermal (constant temperature) → pV=const
n = γ = cp/cv : Adiabatic (no heat transfer)
n → ∞ : Isochoric (constant volume)
Why Polytropic?
It’s called “polytropic” because it is a generalized process that can represent many different physical situations depending on the value of n.
Why Polytropic?
It’s called “polytropic” because it is a generalized process that can represent many different physical situations depending on the value of n.