# FVMBAG1

A non-uniform pressure is assumed inside the volume. The gas flow in FVMBAG1 is solved using a finite volume integration scheme which allows the gas flow through the airbag to be correctly modeled.

Since the gas flow simulated, the unfolding and deployments behavior is correct which is needed for out of position occupant simulations and curtain airbag deployments.

Where, `S` is the injector surface.

A sensor may define the inflator starting time.

Deflation of vent hole is available after reaching a pressure
(`P`_{def}) or time
(`t`_{def}) criteria.

In this version, heat gas capacity
`C`_{p} is assumed constant.

More further detail, refer to FVMBAG1 Airbag Modeling Guidelines.