Reconstruction and extension of the Méricourt locks: Study of hydraulic operations

FLOW-3D HYDRO Case Studies

Reconstruction and extension of the Méricourt locks: Study of hydraulic operations

This article was contributed by Gwenaël CHEVALLET, Chloé CHENE, Antoine HALBARDIER, and Franck RANGOGNIO, BRL ingenierie.

With more than 60 years of experience in large scale hydraulic infrastructures, BRL Ingénierie is a leading company in the navigation sector both in France and abroad.

Modeling Premise

The design of a lock and the associated lock management operations are complex problems that are typically addressed using:

  • Scaled physical models that can be laborious to implement.
  • Issue-specific empirical methods often coupled with calculation approaches.
  • 1D transient hydraulic studies to verify compliance with average velocity, water line slopes and locking times criteria.
  • 3D steady-state hydraulic models for the filling and emptying of valve elements.
  • Charts or simplified calculation approaches for mooring problems.
  • Feedback from operators.

The BRL ingénierie teams has implemented a methodology to address these modeling needs in a combined way using transient 3D CFD hydraulic analysis with the CFD software FLOW-3D.

Methodology

The renovation and extension project of the Méricourt locks on the Seine aims to rebuild the existing locks, as they present visible structural disorder, particularly through the deformation of the lock walls. The site currently holds two parallel functional locks, one with a 160m capacity lock chamber, and the other with a 185m capacity lock chamber. As part of the scope of the project, the owner (Voies Navigables de France, VNF), aimed to, among other objectives:

Mericourt locks aerial view
Figure 1. Aerial view of Méricourt locks. On far left is a decommissioned lock; next to it are Locks no. 1 (middle) and 2 (right).
  • Extend the 160m lock to standardize the capacity of the locks, thus securing the navigation axis. This extension will lead to an increase in the filling and emptying volumes.
  • Install floating bollards to replace the existing fixed bollards.
  • Replace the downstream valve parts (2 aqueducts replaced by 18 valves).

These changes come with a strong requirement from the owner to maintain locking times close to the current 15min locking time, and at the same time comply with maximum force limits on the bollards, 250 to 300kN per bollard (25 to 30 tons).

The model presented here is for lock no. 1 (L=185m, W=17m) and includes:

  • A 3D CAD lock geometry
  • A FLOW-3D transient 3D hydraulic model capable of simulating all the complexities of the flow (stationary flows, eddies, air entrainment, cavitation, water hammer, etc.)
  • Prescribed and coupled moving objects modeling in FLOW-3D
    • Coupled to the fluid:
      • A Grand Rhénan type boat (ECMT class Va, L=110 m, w =11,4 m, capacity 1500 to 3000 tons)
Grand Rhenan type boat geometry
      • Floating bollards
    • Prescribed motions of upstream aqueduct gates or downstream valves in accordance management instructions.
  • A mooring module linking the vessel to the bollards
  • A collision module between the boat and the lock walls
FLOW-3D model of lock no.1
Figure 2. FLOW-3D model of lock no.1 in project situation - Grand Rhénan
Lock no. 1 project simulation

Results

Once the boundary conditions were set (forebay and tailbay water levels) and the characteristics of the vessel and the mooring plan were chosen, the implemented model allowed for detailed evaluation of the following conditions:

  • Duration of a filling or emptying cycle for given management instructions.
  • 3D hydraulic conditions of the flows in the airlock (mainly velocity distribution).
  • Forces transmitted in the bollards during a filling or emptying cycle.
Lock no. 1 project simulation
Figure 5. Simulation of filling of lock n°1 – project situation (2 mooring lines) - Grand Rhénan

Based on simulation results, it was then possible to optimize the filling or emptying management instructions in order to:

  • Ensure compliance with the maximum forces in the bollards
  • Minimize the duration of the locking times (about 10 to 11 minutes) while respecting the material constraints of the valve components (range of operating speeds of the oil circuit pump in particular).
Optimized law of filling by aqueducts
Figure 7: Optimized law of filling by aqueducts
Optimized law of filling by aqueducts
Optimized law of filling by aqueducts

Conclusion

FLOW-3D made it possible to evaluate the design and optimization strategies related to locking (emptying/filling time, hydraulic loads, forces on the boat and forces on floating bollards, etc.) with a single tool. It is in fact a real step forward for the practice. Indeed, this methodology is applicable to all types of locks and all types of vessels.

The results of the modeling carried out so far are particularly satisfactory and are aligned with all order of magnitude calculations using charts, simplified methods or based on the operator’s feedback (emptying/filling laws, flow coefficients of the valves, maximum forces on the bollards, etc.).

Concerning the forces on the bollards (essential dimensioning parameters), the results are obviously tied to the filling schedules, the free length of the mooring lines and their rigidity, as well as to the general mooring plan (number and position of mooring lines), detailed parameters which are all included in the FLOW-3D model.

FLOW-3D Workshops: Additive Manufacturing

Additive Manufacturing Workshops
FLOW-3D AM workshop

Our two-day online Additive Manufacturing and Laser Welding Workshops offer thorough, hands-on instruction in the interface and modeling capabilities of FLOW-3D AM and FLOW-3D WELD. Workshop registration includes a 30 day FLOW-3D AM or FLOW-3D WELD license and in-depth, customized technical support.

July 13 – 14 | 1:00pm – 3:00pm ET

Sept 14 – 15 | 1:00pm – 3:00pm ET

Custom dates available – choose ‘Custom workshop’ on the registration form and our workshop instructor will contact you to schedule your workshop.

What will you learn in an Additive Manufacturing Workshop?

  • How to set up, run and analyze simulations of additive manufacturing processes such as laser powder bed fusion and directed energy deposition.
  • How to use FLOW-3D AM to analyze the effect of specific parameters on your process design.
  • How FLOW-3D POST can be used to create compelling visualizations for in-depth analysis of the melt pool and associated defects.

What will you learn in a Laser Welding Workshop?

  • How to set up, run and analyze simulations of laser welding processes such as laser welding in both conduction and keyhole modes, laser beam shaping, and laser cladding.
  • How to use FLOW-3D WELD to analyze the effect of specific parameters on your process design.
  • How FLOW-3D POST can be used to create compelling visualizations for in-depth analysis of the melt pool and associated defects.

Workshop License

  • You will have access to a FLOW-3D license for 30 days following the workshop. During this period, a Flow Science CFD Engineer will work closely with you, providing customized technical support to help you develop CFD models for analysis of your process.
  • If you decide to purchase a FLOW-3D license, the workshop fee will be fully credited toward your purchase.

Who should attend?

  • These workshops are open to scientists and engineers working in industry research and development of additive manufacturing and laser welding processes.

Day 1

  • General Overview of modelling capabilities
  • Interacting with FLOW-3D interface: model setup and analysis
  • Setting up and analyzing powder spreading simulations
  • Wrap up and Q&A

Day 2

  • Setting up and analyzing laser melting simulations
  • FLOW-3D POST analysis and other topics of interest
  • Discussion of your own problem/challenge
  • Wrap up and Q&A
  • Each workshop is held over two consecutive days, for two hours each day
  • Workshops are hosted on Zoom
  • Registration deadline is one week prior to the first day of the workshop
  • Cost: $3,000.00
    • Includes a 30 day FLOW-3D AM or FLOW-3D WELD license* and in-depth, customized technical support — a $9,000.00 value
*Workshop licenses available to prospective users in the US, Canada, the UK, and Ireland.
  • A Windows machine running 64-bit Windows 10
  • An external mouse (not a touchpad device)
  • Dual monitor setup recommended
  • Dedicated graphics card; nVidia Quadro card required for remote desktop

For more info on recommended hardware, see our Supported Platforms page.

Registration: Workshop registration is available to prospective users in the US, Canada, the UK, and Ireland. Existing users should contact sales@flow3d.com to discuss their licensing options.

Cancellation: Flow Science reserves the right to cancel a workshop at any time, due to reasons such as insufficient registrations or instructor unavailability. In such cases, a full refund will be given, or attendees may opt to transfer their registration to another workshop. Flow Science is not responsible for any costs incurred.

Registrants who are unable to attend a workshop may cancel up to one week in advance to receive a full refund. Attendees must cancel their registration by 5:00 pm MST one week prior to the date of the workshop; after that date, no refunds will be given. If available, an attendee can also request to have their registration transferred to another workshop.

Licensing: Workshop licenses are for evaluation purposes only, and not to be used for any commercial purpose other than evaluation of the capabilities of the software.

Register for an Online FLOW-3D AM Workshop

Register for an Online AM Workshop
All workshops will run for two 2-hour sessions over two days.
Registration Type *
Total

Workshop License Terms and Conditions *
Request for Workshop Certificate
Certificates will be in PDF format. Flow Science does not confirm that our workshops are eligible for PDHs or CEUs.
FLOW-3D News
Privacy *

Please note: Once you click 'Register', you will be directed to our PayPal portal. If you do not have a PayPal account, choose the 'Pay with credit card' option. Your registration is not complete until you have paid.

If you need assistance with the registration process, please contact Workshop Support.

About the Instructors

Allyce Jackman, CFD Engineer at Flow Science

Allyce Jackman is a CFD Engineer with Flow Science, where she specializes in laser welding, coating, and complex multiphysics applications. Allyce holds a Bachelor’s Degree in Mechanical Engineering from the University of New Mexico.

FLOW-3D Workshops: Microfluidics

Microfluidics Workshops
microfluidics workshops
Build hands-on CFD expertise and learn how you can use FLOW-3D‘s powerful multiphysics simulation capabilities to solve problems in microfluidics, lab-on-a-chip, diagnostics and biomedical applications. In this 4-hour online workshop, you will learn how to set up microfluidics simulations, apply complex physics to your models, analyze and interpret your simulation results, and how to follow general simulation best practices. After the workshop, build upon what you’ve learned with your 30-day FLOW-3D license.

All FLOW-3D Microfluidics workshops run from 12:00pm – 4:00pm ET

  • June 15, 2022

‘In-house’ workshops are available for organizational teams of up to ten attendees; for more information and scheduling, contact our microfluidics workshop instructor.

 

What will you learn?

  • How to import geometry and set up models, including meshing and initial and boundary conditions
  • How to add capture coupled physics with models such as electrokinetics, heat transfer, and Lagrangian particles
  • How to use sophisticated visualization tools to effectively analyze and convey simulation results

What happens after the workshop?

  • After the workshop, your license will be extended for 30 days. During this time you will have the support of one of our CFD engineers who will help you work through your specifics. You will also have access to our web-based training videos covering introductory through advanced modeling topics. 

Who should attend?

  • Researchers, scientists and engineers working in the fields of microfluidics, biomedical devices, inkjets, capillary flows, diagnostics, or lab-on-a-chip

Are private workshops available?

Yes! ‘In-house’ workshops are available for organizational teams of up to ten attendees; for more information and scheduling, contact our microfluidics workshop instructor.

  • Workshops are online, hosted through Zoom
  • Registration is limited to 10 attendees
  • Cost: $499 (private sector); $299 (government)
  • 30-day FLOW-3D license*

*See our Registration and Licensing Policy

  • A Windows machine running 64-bit Windows 10
  • An external mouse (not a touchpad device)
  • Dual monitor setup recommended
  • Dedicated graphics card; nVidia Quadro card required for remote desktop
For more info on recommended hardware, see our Supported Platforms page.

Registration: Workshop licenses are available to prospective users in the US, Canada, the UK, and Ireland. Prospective users outside of these countries should contact their distributor to inquire about workshops. Existing users should contact sales@flow3d.com to discuss their licensing options.

Cancellation: Flow Science reserves the right to cancel a workshop at any time, due to reasons such as insufficient registrations or instructor unavailability. In such cases, a full refund will be given, or attendees may opt to transfer their registration to another workshop. Flow Science is not responsible for any costs incurred.

Registrants who are unable to attend a workshop may cancel up to one week in advance to receive a full refund. Attendees must cancel their registration by 5:00 pm MST one week prior to the date of the workshop; after that date, no refunds will be given. If available, an attendee can also request to have their registration transferred to another workshop.

Licensing: Workshop licenses are for evaluation purposes only, and not to be used for any commercial purpose other than evaluation of the capabilities of the software.

Register for an Online FLOW-3D Microfluidics Workshop

Register for an Online Microfluidics Workshop
Registration Type *
Total

Workshop License Terms and Conditions *
Request for Workshop Certificate
Certificates will be in PDF format. Flow Science does not confirm that our workshops are eligible for PDHs or CEUs.
FLOW-3D News
Privacy *

Please note: Once you click 'Register', you will be directed to our PayPal portal. If you do not have a PayPal account, choose the 'Pay with credit card' option. Your registration is not complete until you have paid.

If you need assistance with the registration process, please contact Workshop Support.

About the Instructor

Karthik Ramaswamy, FLOW-3D CFD Engineer

Karthik Ramaswamy is a senior CFD engineer with Flow Science, where he uses CFD to investigate and solve problems in microfluidics, biomedical engineering, complex fluids, and consumer product manufacturing processes. He also works in hydrodynamic modeling for civil infrastructure, coastal engineering, municipal, marine and water/environmental applications. Karthik holds a M.S. in Aerospace Engineering from the University of Illinois at Urbana-Champaign.

FLOW-3D Workshops: Brazil

Sobre nosso Workshops Online

Curioso sobre o FLOW-3D? Deseja saber como modelamos as aplicações em hidráulicas com superfície livre mais desafiadoras:

Nossos workshops são projetadas para fornecer instruções focadas, práticas e abrangentes, que deixarão você com uma compreensão completa de como o FLOW-3D é usado nas principais industrias de água & meio ambiente assim como fundição de metais. Através de exemplos práticos, você explorará o sistema hidráulico de casos típicos de barragens e represas, problemas de transporte de aguas pluviais e esgoto, rios e meio ambiente, projetos de moldes para fundição sob pressão, gravidade entre outros. Posteriormente, será apresentado os modelos físicos mais sofisticados, incluindo aprisionamento de ar, sedimentos e erosão, plumas térmicas, fluxos com densidade variável, dinâmica de partículas, perfil de movimento do pistão de injeção e enchimento do molde. No final do dia, você configurou seis modelos, entendeu a interface do usuário, as etapas comuns a três classes de problemas hidráulicos e usou a avançada ferramenta de pós-processamento FLOW-3D POST para analisar os resultados de suas simulações. 

Calendário de Workshops

Todos os workshops são online, das 9:00 – 13:00 (GMT-3)

FLOW-3D HYDRO: Água & Meio Ambiente

  • 16 June, 2022
  • 14 July, 2022
  • 17 August, 2022
  • 16 September, 2022
  • 26 October, 2022
  • 18 November, 2022

FLOW-3D CAST: Fundição de Metais

  • 9 June, 2022
  • 7 July, 2022
  • 10 August, 2022
  • 9 September, 2022
  • 19 October, 2022
  • 11 November, 2022

Cadastro para o Workshop

Cadastro para o Workshop
Endereço *
Endereço
Nome da rua
Cidade
Tipo de Registro
Termos e Condições da Licença de Oficina *
FLOW-3D News
Privacidade *

Favor notar: Entraremos em contato com você sobre o pagamento deste workshop. Seu registro não será concluído até que você finalize o pagamento do workshop.

Política de cancelamento e licenciamento do workshop

A Flow Science se reserva o direito de cancelar um workshop a qualquer momento, devido a motivos como mau tempo, registros insuficientes ou indisponibilidade do instrutor. Nesses casos, será concedido um reembolso total ou os participantes poderão optar por transferir sua inscrição para outro workshop. A Flow Science não é responsável por nenhum hotel, transporte ou outros custos incorridos.

Os participantes que não puderem participar de um workshop podem cancelar com até uma duas semanas de antecedência para receber um reembolso total. Os participantes devem cancelar sua inscrição até 17:00 Brasília duas semana antes da data do workshop; após essa data, nenhum reembolso será concedido. Como alternativa, um participante pode solicitar que sua inscrição seja transferida para outro workshop.

As licenças do workshop estão disponíveis apenas para usuários em potencial da área do workshop inscrito. Os usuários existentes podem se registrar em um workshop e devem entrar em contato com suporte@mettalforma.com.br para discutir suas opções de licenciamento.

Detalhes do Workshop

  • O cadastro é limitado em 15 participantes
  • Custos: $150 (setor privado); $150 (setor público); $100 (acadêmico)
  • Horário: 9:00 – 13:00
  • 30 – Dias de licença para o FLOW-3D HYDRO ou FLOW-3D CAST
  • Traga seu laptop e um mouse e participe, ou só assista
  • O almoço será providenciado por nós
Support for FLOW-3D products
Um workshop do FLOW-3D para aplicações água e meio ambiente em Lyon, França. Um agradecimento especial ao nosso anfitrião, Électricité de France.

Quem deve comparecer?

  • Profissionais de engenharia em recursos hídricos, meio ambiente, energia, indústrias de engenharia civil, projetistas de moldes para fundição e engenheiros de produto.
  • Reguladores e tomadores de decisão que desejam entender melhor quais ferramentas de ponta estão disponíveis para a comunidade de modelos.
  • Estudantes de universidades interessados em pesquisas através do CFD.
  • Todos os modeladores que trabalham no campo de hidráulica ambiental.

O que você irá aprender?

  • Como importar geometrias e modelos de conjuntos hidráulicos de superfícies livres, incluindo malhas, condições iniciais e as condições de limites.
  • Como adicionar complexibilidade, incluindo transporte de sedimentos, partículas, escalares e turbulência.
  • Como usar ferramentas sofisticadas de visualização tal como FLOW-3D POST para uma análise eficiente e transmitir os resultados da simulação.
  • Tópicos avançados, incluindo aprisionamento de ar e fenômenos de volume de ar, águas rasas, modelagem híbrida 3D / águas rasas e química.
FLOW-3D Workshop
Um workshop FLOW-3D de muito sucesso para aplicações hídricas e ambientais em Bangkok, organizado pelo nosso parceiro tailandês DTA e organizado pela Universidade de Tecnologia Thonburi do rei Mongkut (KMUTT). Agradecimentos especiais ao Prof. Chaiyuth Chinnarasri.

Você concluiu o workshop de um dia, e agora?

Reconhecemos que tudo não será absorvido em um dia, você pode querer explorar ainda mais os recursos do FLOW-3D configurando seu próprio problema ou comparando os resultados de CFD com medições anteriores no campo ou no laboratório. Após o workshop, sua licença será estendida por 30 dias. Durante esse período, você terá o apoio de um de nossos engenheiros de CFD que o ajudará a trabalhar com suas especificidades. Você também terá acesso aos nossos vídeos de treinamento baseados na Web, cobrindo tópicos de modelagem introdutórios a avançados.

Road Trips and OOP Concepts

This blog was contributed by Danya Alrawi, an intern in the Graphical Users Interface (GUI) Group.

Class Car implements inoperable

I was broken down midway between New Mexico and New Jersey, waiting for a tow truck, when I received an email from my computer science program at NMSU about the Flow Science software engineering internship. With lots of waiting still ahead, I started researching Flow Science. A New Mexico software company that develops scientific software, no way I’m passing this up! I quickly sent on my resume and hoped to hear back. Later, after a couple of pleasant conversations with the company and a programming test, I started the trip from Las Cruces to northern New Mexico with the company of my husband, cat, 15 cichlids and a newly-fixed truck to start a three-month internship with the GUI group.

On the first day, I was welcomed by the manager of the GUI group Stephen Sanchez, who introduced me to everyone at the office and showed me around. Overwhelmed by the new experience and trying to remember everyone’s names, I went to the break room to get a cup of coffee. I grabbed a mug with a cheesy physics pun on it and started laughing when I saw the other ones. I was quickly put at ease from how nice everyone I met was and the easy-going feel of the office.

Funny physics coffee mugs
Puns abound among Flow Science's extensive coffee mug collection

After a cup of coffee, I was ready to jump into the development environment that had been set up for me. My team made sure I was sufficiently challenged but not too overwhelmed. As an introduction to using Qt (the GUI framework used by FLOW-3D), I started building a GUI for my very simple C++ program. I was equipped with the tools to play around with FLOW-3D’s code and had the freedom to divide my time as I saw fit. I ended up alternating between working on my learning project, reading tons of C++ and Qt documentation, and stepping through FLOW-3D’s code in hopes of drawing parallels between my simple application and the large, complex architecture of FLOW-3D.

Debugging null pointers, picnic and pizza

It is a huge privilege to have a team of software engineers that I can turn to while tackling advanced topics. At first, every bug I didn’t understand was the most frustrating thing ever, but getting past these hurdles became the most satisfying part of the job. After each struggle I came away with a better understanding of the code and the tools I was using, and equally I could see how much more there was to learn. I was tackling weaknesses I had in programming (aka Visual studio debugger) and after a month I was laughing with my team at lunch about my earlier frustrations.

Speaking of lunch, the GUI team has a bi-weekly lunch-and-learn where we discuss selected topics in software development and brainstorm about how we can incorporate them into our development, while we eat pizza. I think this is a big plus because it encourages constant learning and keeping up with the latest technologies, which is really important in the software field.

During my second month, we had a company picnic. Luckily it was a beautiful day, so everyone walked to the park. We had a nice lunch and a birthday celebration for the CEO, and I got to use my camera to capture some of the moments (and improve my manual focus lens skills). It was easy to start a conversation with people, everyone was very nice and eager to hear from me as well as willing to share what they do at the company. I discovered that Paree from the sales team was also into photography, and he was really nice about listening to my camera babble while we walked to the park.

Flow Science Company Picnic
Danya (left), with fellow GUI Group members Omar, Stephen and Edgar

Internship-wise, I was now feeling a lot more comfortable with C++ and contributing to the product’s codebase. It was a big moment the first time I saw my modifications running inside FLOW-3D’s GUI and it only made me want to do more.

Now that I’m at the end of my third month here, I feel that I’ve grown personally and professionally. My approach to solving problems has significantly improved and every time I encounter an issue that seems difficult, I get excited to find the solution rather than intimidated. My team has been amazing at exposing me to all the components necessary to the product’s functionality, helping me identifying my strengths and difficulties, and making sure I take away good development habits. I learn new things every day, and being surrounded by the knowledgeable people at Flow Science and hearing the whiteboard discussions in the background inspires me to continue learning.

Editor’s Note: Danya’s hard work and dedication has earned her a full-time position of Software Engineer in the GUI group starting at the beginning of 2019. 

Request More Information

FLOW-3D AM WELD Request Info

What additive manufacturing processes do you want to simulate? *
What laser welding processes do you want to simulate? *
FLOW-3D News
Privacy *
CSTsiteisloaded