One-dimensional (1D) modelling of river processes is essential for answering key questions in river management, research, and engineering. Delft3D Flexible Mesh can be used to this end. However, not all the functionalities that you desire may be available yet. In setting the path of future 1D modelling your insight and expertise is necessary. In order to provide users with the best advice and modelling software, we ask you to provide us with input. https://dlt-acc.firelay.cloud/nl/c/message_boards/find_category?p_l_id=3228466&mbCategoryId=4099168 2026-05-12T13:17:20Z 2026-05-12T13:17:20Z Sanjay Giri https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4191905 2021-06-06T15:37:38Z 2021-06-06T15:37:38Z

In carrying out pilot studies as well as in discussions on integrating/improving processes and functionalities. 

Sanjay Giri 2021-06-06T15:37:38Z Sanjay Giri https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4191898 2021-06-06T15:36:02Z 2021-06-06T15:36:02Z

User-friendly functionalities, basic hydraulic and morphological processes (including confluences and bifurcations as in Sobek-RE) and stability. 

Sanjay Giri 2021-06-06T15:36:02Z Sanjay Giri https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4191891 2021-06-06T15:32:50Z 2021-06-06T15:32:50Z

<span style="font-size: 12px;"><span style="font-family: Arial, sans-serif"><span style="color: #1f497d">GUI is very important for the efficiency and ease of project execution. For our own use, a basic interface would do, but to deliver the model to the client (and disseminate it to the external users), a proper interface is required. You can check other freely available software.  </span></span></span>

Sanjay Giri 2021-06-06T15:32:50Z Sanjay Giri https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4191884 2021-06-06T15:29:02Z 2021-06-06T15:29:02Z

Yes, we can discuss about this. 

Sanjay Giri 2021-06-06T15:29:02Z Sanjay Giri https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4191877 2021-06-06T15:28:16Z 2021-06-06T15:28:16Z

Proper sediment transport and morphological processes, equivalent to Sobek-RE, will already be good enough. Besides, some (user-friendly) functionalities in 1D2D model, e.g. dam-break features given that the 1D2D model is widely used for dam-break computations and analysis (check HEC-RAS, for example).  

Sanjay Giri 2021-06-06T15:28:16Z Sanjay Giri https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4191870 2021-06-06T15:23:45Z 2021-06-06T15:23:45Z

<span style="font-size: 12px;"><span style="font-family: Arial, sans-serif"><span style="color: #1f497d">Yes, this is possible. We have a project in which 1D HEC-RAS morphological models of seven river basins in India will be developed by the end of this year.  We can use one river system as a pilot with our model and compare with HEC-RAS result.</span></span></span>

Sanjay Giri 2021-06-06T15:23:45Z Juan P. Martín-Vide https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4187893 2021-06-04T14:31:14Z 2021-06-04T14:30:12Z

In my view, a !D model for natural rivers needs to treat vegetation, both rigid and specially flexible vegetation.<br />Furthermore, the shear stress distribution on the bed should be carefully modeled: I mean, above all, to model the friction between the river main channel and its floodplains.<br />Bedload transport by fractions is another important function to be included.

Juan P. Martín-Vide 2021-06-04T14:30:12Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185839 2021-06-04T06:49:44Z 2021-06-04T06:49:44Z

Do you have clients that might be interested in cooperating in this?

Aukje Spruyt 2021-06-04T06:49:44Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185830 2021-06-04T07:28:51Z 2021-06-04T06:49:03Z

Are you interested in contributing to pilot projects/models?

Aukje Spruyt 2021-06-04T06:49:03Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185821 2021-06-04T06:48:17Z 2021-06-04T06:48:17Z

How do you want to be involved in the further development of 1D software?

Aukje Spruyt 2021-06-04T06:48:17Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185812 2021-06-04T06:46:17Z 2021-06-04T06:46:17Z

Do you need only a basic one or should it cover all functionalities?

Aukje Spruyt 2021-06-04T06:46:17Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185801 2021-06-04T06:44:33Z 2021-06-04T06:44:33Z

What would the 1D software require to help you further?

Aukje Spruyt 2021-06-04T06:44:33Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185792 2021-06-04T06:43:38Z 2021-06-04T06:43:38Z

What do you like about your current approach in 1D modeling (and what not)?

Aukje Spruyt 2021-06-04T06:43:38Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185777 2021-06-04T06:41:52Z 2021-06-04T06:40:57Z

How do you do that now?

Aukje Spruyt 2021-06-04T06:40:57Z Aukje Spruyt https://dlt-acc.firelay.cloud/nl/c/message_boards/find_message?p_l_id=3228466&messageId=4185756 2021-06-04T06:39:57Z 2021-06-04T06:39:56Z

Which processes do you want to model in your projects?

Aukje Spruyt 2021-06-04T06:39:56Z