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TOPIC: Study the propagation of dredged sediment plume with NESTOR

Study the propagation of dredged sediment plume with NESTOR 5 years 8 months ago #31336

  • yasmina
  • yasmina's Avatar
Hello community,

I have followed the advices of pablo for using NESTOR to modelise the propagation of dredged sediment plume.

First, i will use the dredging with criterion, because i must use differents simulation with varing the rate of resuspension (i don't know exactly how i can make this but i will search).
So from wich i understand, the essentialy of this module is based on three file:

01- NESTOR ACTION FILE = _DigActions.dat
This file principaly determine the period of dredging, the name of the polygon where occured the dredging, the dredging rate (m/s), the volume of dredge material.....

02-NESTOR POLYGON FILE = _DigPolys.dat
With this file i integrated to my model the surface where the dredging occured. Like in the picture below

surfaceofdredging.png


From this picture we can sea, that the surface of dredging is taked acount in the simulation (it's represent the evolution of bed). But in the other way i see in the harbour for exemple some zone of erosion. From wich manner is calculated this érosion?

03-NESTOR SURFACE REFERENCE FILE = _DigRefLev.dat

With this file my simulation don't run at all, it make the error below;

errorNESTOR.png


01- First, is it a problem if i use NESTOR in the HARBOUR? i mean the third file delimite the zone of the channel, with coordinate of the right and the left of the channel, so in my prooject i just integrated the coordinates of the right and left coastal line of the center of source point.

02- Second, for the third file, i just make all the Z to 0m, is it a mistakes? if yes, where is the reference for the digdepth.

03- Third, i am not understand why i don't have a result of quantity of sediment suspension? is there any special key word that i must use?

04-Finaly, do you think that is possible to integrate the rate of resuspension sediment wich depending of the type of drague?

Sorry for the many questions, but i really want to more understand , it's very an interessant modul.

Thank you in advance.
YASMINA.
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Study the propagation of dredged sediment plume with NESTOR 5 years 7 months ago #31583

  • boris
  • boris's Avatar
Sorry for the late answer.
Please show me the three Nestor-files. This would help to understand what you try to do.
In the image I see one yellow area. Where is the harbour?

Best regards Boris
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