Applicability of the Lattice Boltzmann Method to the simulation of pressure surges of liquid nitrogen

摘要

Previous tests at the Fluid Transient Test Facility (FTTF) revealed interesting phenomena which were unexpected like small pressure spikes in an area where only saturation pressure is expected and the almost constant velocity of vapour bubbles in cavitating flows. In order to support upcoming tests at the FTTF with liquid nitrogen (LN2), simulations were performed with a Lattice Boltzmann Method (LBM) to investigate how the LBM is suitable for this problem and to show how LN2 will be different from the tests performed with water.