Test cases

The main objectives of the test cases are to:

  • check the installation of the model code by the user;
  • perform simulations without any programming effort by the user;
  • demonstrate the various options, available in the program (e.g. selection of a particular scheme by setting the appropriate switches) and, in particular, to show how model results are affected by different choices of model switches or parameters;
  • test the portability of the program;
  • provide a debugging tool for further developments of the model code.

More information about the test cases is available in the COHERENS manual.

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Available test cases

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Test case Features used Action

Cones Advection of a uniformly rotating cone-shaped contaminant contribution

2d/horizontal salinity/coded View animation →

Front Advection of a layered contaminant distribution by a tidal slope current

2d/vertical salinity/coded open sea boundaries tides/coded user-defined output View animation →

Seich Propagation of an internal wave within a closed channel

2d/vertical salinity/coded user-defined output View animation →

Fredy A bottomless cylinder of fresh water is immersed into a rotating tank containing a fluid of higher density. After removal of the cylinder the fresh water spreads radially outwardsuntil a geostrophic quasi-equilibrium state is reached

3d salinity/coded user-defined output View animation →

Pycno The evolution of a wind-driven surface mixed layer in the absence of rotation

1d salinity/coded open sea boundaries wind/coded user-defined output  

CSnsp The annual cycle of thermal stratification at station CS (55° 30'N, 0°55'E) located in the deeper parts of the North Sea where a thermocline forms during the summer

1d salinity/data tides/M2 open sea boundaries tides/coded wind/data user-defined output  

River A non-rotating channel of uniform depth with open ends. Lateral effects are ignored

2d/vertical salinity open sea boundaries/2 tides/coded user-defined output harmonic analysis View animation →

Plume The computational domain has the form of a rectangle enclosed by a coastal (solid) boundary and three open sea boundaries

3d salinity open sea boundaries/3 rivers tides/kelvin wave user-defined output harmonic analysis View animation →

Rhone The rhone test case can be considered as complementary to the plume case, but with a 'real' bathymetry

3d salinity open sea boundaries/3 rivers wind/coded user-defined output View animation →

Flood 2D flooding and drying by an oscillating current inside a straight channel using two different bathymetries

2d/vertical open sea boundaries/2 tides/coded inundation user-defined output  

Flood 3D Flooding and drying by an oscillating tidal current in a rectangular basin

3d open sea boundaries/1 tides/S2 inundation user-defined output  

Bohai Northern part of the Yellow Sea between the Northeast coast of China and the Korean peninsula

2d 3d open sea boundaries/2 tides/M2,S2 user-defined output harmonic analysis View animation →

Bedload Test case in which the different bed load sediment transport formulae are tested

2d/horizontal sediment user-defined output

Totload Test case in which the different total load sediment transport formulae are tested

2d/horizontal sediment user-defined output

Wavload Test case in which the different wave-induced sediment transport formulae are tested

2d/horizontal sediment user-defined output waves

Sedvprof 1D test case in which sediment concentration profiles are calculated using the advection diffusion approach

1d sediment user-defined output

Sedhprof Test case in which the adaptation of the sediment concentration over an eroding surface towards the equilibrium concentration is calculated

2d/horizontal sediment user-defined output

Seddens This test case simulates particle-driven gravity currents (also known as density currents). Results can be compared to the similarity solution of Hogg et al. (2000)

2d sediment user-defined output

Thacker Suspended sediment transport due to a seiche in a parabolic basin

2d sediment inundation user-defined output

Bendflow This test case simulates flow and sediment transport in a 180° open channel bend

2d 3d sediment

Morphctb Test case that simulates the sediment accumulation and erosion in a semi-closed basin that is subjected to a full year tide

2d sediment morphology open sea boundaries tides

Morphtidav Test case that simulates the effect of the tidal averaging acceleration technique in the semi-closed tidal basin

2d sediment morphology open sea boundaries tides

Morphgauss Test case that simulates the propagation of a gaussian hump bed form on a sediment bed

2d sediment morphology open sea boundaries

Morphsort Simulation of the vertical sorting processes of armouring and filtering in a sediment bed consisting of multiple layers with different sediment composition

2d sediment morphology open sea boundaries

Morphtrench Test case simulating the downstream movement of a trench

2d sediment morphology open sea boundaries

Morphflat Test case simulating the development of an initially flat bed into the equilibrium bed profile

2d sediment morphology open sea boundaries

Largedar Dredging and relocation test case that focuses on the spatial coupling between dredging and relocation sites

2d sediment morphology dredging/relocation open sea boundaries

Smalldar Dredging and relocation test case that focuses on the different methods of defining dredging campaigns and performing the dredging and relocation activities that are present in the module

2d sediment morphology dredging/relocation open sea boundaries