<simulation>
- <simulation> - <general> - <num_ramp_up_iterations>
- The inlet velocity is increased from zero to the value requested by <reference_velocity> over a certain amount of ramp-up iterations and physical time. By default, the number of ramp-up iterations is computed to achieve an average acceleration of 200 m/s2. For a case with reference velocity 40 m/s, the ramp-up phase covers the first 0.2 s of the simulation, and the number of ramp-up iterations is calculated accordingly.
- <simulation> - <geometry> - <triangle_mesh_export>
-
- true
- The triangulated surface used in the code (after triangle_splitting, if applicable) is exported to uFX_meshData/uFX_surfaceMesh.stl.
- false (default)
- <simulation> - <wall_modeling>
-
- <wall_model_intensity>
- The wall model intensity parameter is used together with the <coupling> “one-way” option and determines the strength of the link between the velocity taken as input to the wall model and the information fed to the first near wall cell. For a value of 0.0, the wall model is effectively switched off and a standard no-slip boundary condition is applied.
- <donor_interpolation>
- The donor position is the point where the wall model is coupled to the flow field, in a sufficiently well resolved part of the boundary layer. This donor position does not necessarily coincide with a voxel center; the information required at this position will be interpolated/derived from the data available in the 27 voxels (3x3x3) around the donor position.
- <simulation> - <initialization> - <seeding>
- To accelerate convergence, you can initialize ("seed") the ultraFluidX simulation with velocity information from a previous run or from fallback velocity. Standard ultraFluidX output files (*.geo and *.data) with transient or time-averaged velocity information can be used for the initialization.