Degas Bottles

Degas bottles are crucial components of automotive engine coolant systems, used to de-aerate the coolant fluid during its passage. These bottles consist of several chambers and have a complex geometry based on underhood compactness and vehicle design. It is important to study air entrainment, settling and sloshing behavior of coolant fluid during vehicle acceleration.

FLOW-3D is used to analyze the multiphase behavior of sloshing coolants within a running automotive coolant system. Coolant fluid within each chamber through time can be tracked and any interference with either the cap or vents can be analyzed. The simulation below shows transient velocity magnitude contours and air entrainment during an active filling and sloshing simulation.

Transient calculation of entrained air in a degas bottle simulation.