FDSI Summer Program/HONEE

Information for tutorial in HONEE, to be updated as needed.

HONEE, or the High-Order Navier-stokes Equation Evaluator, is a CFD program that combines libCEED and PETSc.

Changing HONEE Inputs

HONEE uses PETSc's input argument system for handling inputs. They can be provided either via command-line flags or inside a YAML file. So

./build/fluids-navierstokes -ts_dt 1e-3

is equivalent to

./build/fluids-navierstokes -options_file test.yaml

if test.yaml has this in it:

ts_dt: 1e-3

Note also that PETSc allows for hierarchical flags as well within a YAML file. So instead of writing

ts_dt: 1e-3
ts_type: alpha
ts_max_time: 2.3

You can write:

ts:
  dt: 1e-3
  type: alpha
  max_time: 2.3

Documentation for Specific Flags

• HONEE specific flags
• Time Stepping (TS) flags
• Non-linear solver (SNES) flags
• Linear solver (KSP) flags