Transient Cavitation Panel

The Transient Cavitation panel contains settings for the transient cavitation models.

Transient Cavitation modeling can be enabled or disabled using the check box next to Model Transient Cavitation. Transient cavitation modeling is enabled by default, and it is strongly recommended to keep it enabled. Some situations exist where it can be beneficial to disable cavitation modeling for troubleshooting purposes. When cavitation modeling is enabled, Impulse will use the fluid’s vapor pressure and the selected cavitation model to capture transient cavitation. When cavitation modeling is disabled, the Method of Characteristics solution will be allowed to calculate pressure below the fluid’s vapor pressure and even below absolute zero.

Two cavitation models are available: the Discrete Vapor Cavity Model (DVCM) and the Discrete Gas Cavity Model (DGCM). DVCM is the default model due to the lower computational complexity and simulation run time.

DGCM is the more advanced model and contains several additional parameters which are all defined by default. The user can modify the DGCM parameters under the Advanced Cavitation Options if desired, but the default values are strongly recommended.

Further detail regarding the transient cavitation models and inputs can be found on the Cavitation Models theory page.