Fuel Tanks

Fuel tanks in automotive vehicles are crucial for safely storing fuel. They also ensure constant and adequate supply for various operating loads of a vehicle in motion. The tanks can be complex in shape to ensure compact packaging with vehicle chassis design and body panels. When the vehicle accelerates through driving conditions, the fuel sloshes within the tank triggering a challenge to fuel level gauges, pressure and delivery systems. Fuel filling is critical at pumps where the vapor compressibility in the tank can cause undesired early shutoff of filling nozzle. In addition, static electricity can be conveyed into the fuel tanks resulting in rise of electric potential within fuel system. FLOW-3D helps simulate these complex multi-phase, multi-physical, transient scenarios to aid fuel system design and improvement.

Simulation of gas filling of a tank, modeling air entrainment.

Other analysis capabilities:

  • An electrostatic model that can capture a charge distribution with time
  • Fuel level indication using the Moving Objects model with 6 degrees of freedom to capture float variations
  • Fuel line pressurization
  • Optimal location of vents