2.1.2 Grid generation

Creating 1D-2D net links

2022-11-02T12:54:32Z

Hi there,

I was wondering how to create 1D flow links to incorporate a 1D channel into 2D flood plain? Just like on this figure: https://content.oss.deltares.nl/delft3d/manuals/D-Flow_FM_User_Manual_1D2D.pdf#page=439&zoom=100,132,101
It seems that RGFGRID should be able to do this, but I cannot find anything on this functionality in the manual.

Best,
Dmitry

RE: Execution of Unstructured Grid (UGRID) has failed.

2022-06-29T10:49:58Z

Have you placed the compiled kernels in the correct directory?

RE: Execution of Unstructured Grid (UGRID) has failed.

2022-06-20T22:39:38Z

Hello,
I have the same issue!
Did you find a solution?

Execution of Unstructured Grid (UGRID) has failed.

2022-01-31T20:58:08Z

I am trying to run the tutorials from the Delft3d Flexible Mesh Suite HM manual, using the tutorial data. The software keeps failing to import unstructured grids.
I get the following error messages:
Execution of Unstructured Grid (UGRID) has failed.
The type initializer for 'SharpMap.Api.GridGeom.GridGeomDll' threw an exception.

What can be the origin of this error? Anyone else has it? What can I do to solve it?

RE: Issues with Grid Generation

2022-01-04T11:03:11Z

The grid generation issues found in the 3D simulation of two-phase flow in a pipe using Computational Fluid Dynamics (CFD) are discussed in this paper. Special attention is given to the effect of the element type and structure of the mesh. The simulations were carried out using the commercial software package STAR-CCM+, which is designed for numerical simulation of continuum mechanics problems. The model consisted of a cylindrical vertical pipe. Different mesh structures were employed in the computational domain. The condition of two-phase flow was simulated with the Volume of Fluid (VOF) model, taking into consideration turbulence effects using the k-e model. The results showed that there is a strong dependency of the flow behaviour on the mesh employed. The best result was obtained with the grid known as butterfly grid, while the cylindrical mesh produced misleading results. The simulation was validated against experimental results.

RE: Issues with Grid Generation

2021-11-28T10:46:52Z

Hi Noelani,
Check this video podcasts on creating unstructured grids in RGFGRID:
https://oss.deltares.nl/web/delft3dfm/-/video-grid-generation-unstructured-mesh?redirect=%2Fweb%2Fdelft3dfm%2Fscreen-casts
https://oss.deltares.nl/web/delft3dfm/-/video-advanced-grid-generation-unstructured-grids-for-the-sand-engine?redirect=%2Fweb%2Fdelft3dfm%2Fscreen-casts
These will help you to clear things up a bit.
Regards,
Dmitry

Issues with Grid Generation

2021-11-24T20:41:41Z

Hi I created a land boundry layer from google earth (kmz) and converted it to a shapefile in ArcMap. Using the ESRI shapefile importer on Delft3D FM I was able to import the file and re-save it as a land boundry layer (.lbd) However, when I go to Grid and generate the splines I am unable to use the "grow grid from splines" feature. It allows me to use the "change splines to grid" feature. I select a New Domain when I try to generate the grid and ensure that I am not stuck in editing mode. Also, I ensure my coordinate system is cartesian. I also do the clicking on the empty space multiple times to clear the cache. Has anyone had this issue before? Any insights you can offer?