The DHLLDV software model - Development and use

R. C. Ramsdell, Sape Miedema

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


The DHLLDV model consists of a framework to determine the resulting hydraulic gradient curve for spatial volumetric concentrations and uniform sands, consisting of parts of five flow regimes: fixed or stationary bed transport, sliding bed transport, heterogeneous transport, homogeneous transport and sliding flow transport. Each flow regime has its own physical and mathematical model. Once the resulting hydraulic gradient curve and the limit deposit velocity are determined, a holdup function enables the user to construct the delivered volumetric concentration curve and the bed height. The authors have developed an open source software library, written in the Python programming language, that implements the model. The paper will provide an overview of the software, how to download and test it, and how to incorporate it into a variety of types of software. Developing engineering software presents a number of challenges: tracking and managing the development process, ensuring the quality and correctness of the resulting software, and incorporating the software into existing engineering processes. The software is hosted in a Git software repository, to enable a transparent and traceable development process.

Original languageEnglish
Title of host publicationProceedings of the 21st World Dredging Congress & Exhibition (WODCON XXI)
Place of PublicationVancouver, WA, USA
PublisherWestern Dredging Association
ISBN (Print)978-1-5108-2989-3
Publication statusPublished - 2016
EventWODCON XXI: World Dredging Congress and Exposition 2016 "Innovations in Dredging" - Miami, United States
Duration: 13 Jul 201617 Jul 2016


ConferenceWODCON XXI: World Dredging Congress and Exposition 2016 "Innovations in Dredging"
Country/TerritoryUnited States

Bibliographical note

WODCON XXI will showcase some 120 technical papers over three days covering all aspects of dredging and maritime construction. All WODCON XXI papers will be peer reviewed and provide up to date, relevant and high quality information. The congress will also feature a technical exhibition and technical visits. These technical program elements will ensure a complete learning process, while various social events will allow participants to meet fellow professionals from all over the world in a friendly and inspiring atmosphere

Bladzijdenummering document komt niet overeen met die uit de inhoudsopgave van Proceedings


Dive into the research topics of 'The DHLLDV software model - Development and use'. Together they form a unique fingerprint.

Cite this