Culverts

[AliceHarang]

Adding the implementation of simple culverts

• Reading, create variables and their initialization
• Creation of the structure during running
• Add well / source term
• Test case
• Add culvert limited by difference of water elevation
• Add culvert 2 ways
• Add Test cases for other type of culverts
• Add "area" culvert (for storm water systems)
• Add input in file (geojson?)
• Add documentation

[AliceHarang]

Different types of culverts are implemented:

• type 0 : culvert with pump.
  Transfer of water from one cell to another, no time delay, at a discharge equal or lower to the pump maximum discharge
• type 1 : culvert one way
  Transfer of water from point 1 to point 2 only, no time delay. The energy dissipation is included as for the classic 2way culvert
• type 2 : culvert 2-way
  2-way culvert, between point 1 and point2, no time delay. The energy dissipation is calculated using HEC-RAS equations (with simplification of equations and possible options/geometries of the culverts).

Culvert type:

• cylindrique
• square

Culvert Equations

Entrance Loss Coefficient:

h_{en}=k_{en} * V_{en}^2 / (2*g) with: h_{en} Head loss due to the entrance shape, k