18.4 2020-01 Release

Table 18.4 outlines the changes made to the default settings for the 2020-01 release and lists commands to revert the settings to those used by the prior major release group (2018-03). All default settings can be reverted to the prior release by using the command, “Defaults == Pre 2020-01”. For more information on changes, see the 2020-01 Release Notes.

Table 18.4: Default Changes in the 2020-01 Release and Backward Compatibility to 2018-03

Description of Change	2020-01 Release Notes	Backward Compatibility Command
Turbulence scheme changed	Section 5.1	Viscosity Formulation == Smagorinsky
Improvement to dry wall treament for eddy viscosity	Section 5.2.3	Viscosity Approach == Method A
Flow depth used for bed friction calculation	Section 5.3	HPC Mannings Depth Approach == Method A
Improvement to HPC water level boundaries	Section 6.1	HPC Boundary Approach == Method A