IAHR TRAINING COURSES SERIES

IAHR Training Course on Shallow mixing interfaces and their role in controlling flow, mixing and sediment transport at river confluences

27 October- 3 November 2025

  Programme  Fluvial Hydraulics TC  IAHR Training Courses Series 

 Course Introduction

This IAHR Training Course explores in depth the physics of shallow mixing layers and interfaces, focusing on the related transport processes that occur both in controlled (canonical) scenarios and in natural environments such as river confluences. Emphasis is placed on how the structure and spatial development of the mixing interface are influenced by factors such as density contrasts between incoming flows, channel bathymetry, confluence angle, and bed roughness. 

Participants will be introduced to state-of-the-art laboratory experiments, field campaigns, and numerical simulations that shed light on the flow structure and dynamics at river confluences. The course highlights the critical role of large-scale turbulence in shaping sediment transport, water quality, and biodiversity patterns, recognising confluences as essential nodes in river networks, with implications at both local and basin scales. 

By integrating experimental and numerical approaches, this course offers a unique opportunity to gain comprehensive knowledge of the multi-scale processes at river confluences. Attendees will also benefit from interactive sessions, with opportunities to engage directly with leading researchers in the field. 

 Learning goals 

By the end of the course, participants will:

• Understand the fundamental physics of shallow mixing interfaces and their relevance in riverine systems.

• Recognise the key physical parameters influencing flow structure and mixing in confluences.

• Become familiar with experimental, field-based, and numerical methods used to study flow and transport processes.

• Appreciate the ecological and socio-economic significance of river confluences in sediment routing, water quality, and biodiversity.

• Be able to interpret and analyse field and simulation data in the context of shallow mixing processes.

 For whom

This course is designed for:

• Early-career researchers, PhD candidates, and postgraduate students in hydraulics, environmental engineering, and geosciences.

• Professionals and academics interested in sediment transport, ecohydraulics, and river system modelling.

• Practitioners involved in river basin management, water conservancy planning, and environmental assessment.

No advanced background in numerical modelling is required, although a general understanding of fluid mechanics will be beneficial.

 Speakers 

 How to participate

This course is free for IAHR members. IAHR Associated Members are invited to either upgrade to Full Membership or pay the course fee to participate. 

Registration & Fees

IAHR Full Members: Free (please enter your membership number in the registration form)

Non-Members and IAHR Associated Members: You have two options to register:

1. Become an IAHR Full Member and register for free. We encourage you to join IAHR to enjoy this and other member benefits. Contact our membership manager, Ms. Sally Feng at membership@iahr.org if you have difficulty joining IAHR.

2. Pay the course fee: €105 or €53 -depending on your country- (which includes a one-year IAHR membership). Fill in the form and request an invoice for the registration fee.

   Deadline for registration: 22 October 2025

   
   

Access & Recordings

If you have registered you should have received an e.mail from Zoom with a link to the course. If you do not receive it yet, please send an e.mail to publications@iahr.org.

Note that the unique link in the Zoom email is the ONLY access to this course and must NOT be shared with other people.

Please always check the detailed program of the lectures on this webpage. The program you saw in the Zoom message is not always precise.

The course will be recorded and available on demand for attendees.

 Certificate of attendance 

The certificates of attendance are available upon request and have a cost of 50 euro. If you wish to request a certificate, please select it in the registration form. If you have any questions please contact accounts@iahr.org

The certificates will be issued by IAHR and they will include the number of hours and dates.

 Become a Sponsor!

As a sponsor of this training course, you will enjoy significant visibility across a variety of IAHR platforms and promotional channels, including: 

• Displaying your logo and linked company name on the training course webpage.

• Displaying your logo and linked company name on promotional emails.

• Displaying your logo and linked company name in social media campaigns.

• Displaying your logo on the certificate of attendance.

• Verbal recognition by the organiser at the opening & closing of the event, as well as at the start of each lecture.

• One year of FREE small institute membership (for non-members). 

Additional Benefits for Premium Sponsors:

• A 2-minute slot for a video showcasing your activities, products, or services. 

• Invitation to participate in panel discussions or roundtables organised by IAHR during the year. 

• Customisable Activities: We can tailor a sponsorship plan based on your specific needs, including additional advertising opportunities or a broader presence at multiple events. More info about our events here. 

Classic Sponsorship Fee: 

• €3,000 for non-IAHR Members (Large institutes >450 employees)

• €2,000 for non-IAHR Members (Small institutes <450 employees)

• €1,000 for IAHR Institute Members 

Premium Sponsorship Fee: 

• €5,000 for non-IAHR Members (Large Institutes >450 employees) 

• €3,500 for non-IAHR Members (Small Institutes <450 employees) 

• €2,500 for IAHR Institute Members 

For any further information on sponsorship, please contact publications@iahr.org