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Method

Benchmark

D-FLOW SLIDE

Relative error

Global check

FailedFailFailed

Fail

OK

Detailed check

FailedFailFailed

Fail

OK

2.2. Spui dike at km 65.0 (between Oud Beijerland and Nieuw Beijerland)

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Method

Benchmark

D-FLOW SLIDE

Relative error

Global check

PassedPass

FailedFail

not OK

Detailed check

PassedPass

FailedFail

not OK

2.3. Spui dike at km 67.8 (oud Beijerland)

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  • A state parameter (for Global step 5 and Detailed checks) of -0.05
  • A critical retrogression length of 42.098 m (which corresponds to the foreland length = 97.460 m - 55.362 m)
  • a migration velocity foreshore of 100 mm/year
  • For the state parameter per layer, a value of -0.04 is used for sand layers and -0.06 for the other layers.

 

D-FLOW SLIDE results differ from are in accordance with the results by hand for the Detailed check, as show in the table below. According to D-FLOW SLIDE, the Detailed check fails even if P(ZV) < P(ZV)allowable .

 

Method

Benchmark

D-FLOW SLIDE

Relative error

Global check

FailedFailFailed

Fail

OK

Detailed check

PassedPassPassed

Fail

Not OK