Runs with easy topography

A simulation of a single surface-mounted cube in neutral channel flow with constant bulk velocity is presented. Cyclic lateral boundary conditions are used. The 3d-model is initialized with constant vertical profiles. Coriolis force is switched off (omega = 0.0). A constant volume flow (i.e. constant bulk velocity) is maintained (conserve_volume_flow = .T.). The flow is explicitly set neutral (neutral = .T.), i.e. the prognostic equation for temperature and other buoyancy terms must not be calculated, which saves computation time. To set the channel flow boundary condition, the horizontal velocity components at the domain top are kept zero (bc_uv_t = 'dirichlet_0'). The cube is constructed using the rastered topography case (topography = 'read_from_file') with the default topography_grid_convention = 'cell_center'.

In a second example, the cube is constructed using the generic topography case (topography = 'single_building') with the default topography_grid_convention = 'cell_edge'.