NEWS Overview



 

 

 

 

 

 

 

 

 

 

 

 

    

Here you can find the latest news by the team at Renuda. Services and product updates, new case studies and fact sheets, and Renuda at events are also highlighted here.

I DECEMBER 2016 - Working with EDF R&D to keep hydroelectric turbines turning
 
The second Francis-99 Tokke workshop was held on 14 and 15 December 2016 at the Norwegian Hydropower Centre in Trodheim, Norway.  Dr. Panos Asproulis from Renuda presented frozen rotor and sliding mesh models applied to a 3D simulation of the hydroturbine using Code_Saturne, the EDF R&D open source general CFD solver. The project, a collaborative effort between EDF R&D and Renuda, was presented on behalf of both companies to 35 researchers from around the world. The entire project was carried out using open-source software only, from CAD to analysis.

The aim of the workshop was to assist Norwegian hydroelectric power plants resolve the problem of hydroturbine blades cracking, a serious, recurring problem requiring urgent attention. The outages have damaging consequences for the economy as major power stations are required to shut down and repair the turbines. The resulting operational costs are passed on to the end consumer, a knock-on effect which has far reaching consequences. To remedy the situation, the largest university in Norway, the Norwegian University NTNU, was commissioned to identify reasons for the blade failures and present their findings. 

As part of the solution NTNU created a model Francis hydroturbine and started measuring typical operational points of the full scale turbines for steady state (constant guide vane angle) and transient (time dependent guide vane angle) measurements. The difficulty they have is that, until the end of 2018 when they anticipate being able to measure stress on the mechanical assembly holding the turbine in place, they are restricted to measuring the flow properties at specific locations, prohibiting them from studying the forces and stresses on the blades. In an attempt to find alternate solution CFD companies were invited to present 3D simulation models.

Dr Asproulis presented a frozen rotor and a sliding mesh model which focused on three steady-state operating points; part load, best efficiency point and high load. Both simulation approaches are available in Code_Saturne, developed specifically for turbomachinery applications. Questioned by researchers in the audience regarding the relative merits of the two approaches, he explained that the frozen rotor model is a physical approximation, which is less complicated than the sliding mesh model because the rotor rotation is taken into account implicitly by the modification of the equations of motion. This reduces the computational effort by 25%, a critical factor when considering high computational costs. As an alternative, the sliding mesh model represents the real physical process and allows facilities with the computing capacity the opportunity to potentially produce more accurate results and the ability to capture unsteady phenomena related to rotor-stator interactions. Overall, compared to the mean quantities measured by the workshop organisers, both models gave results which compared well with the experiments. Work in progress was also presented demonstrating the ability of Code_Saturne to simulate transient operation conditions, when the vanes move in time, by displacing the mesh nodes to follow the vanes motion.

While the simulation presentations were seen as a step closer to resolving the problem, the university was hoping to gain a better insight into the rotor and the interaction between the blades and the vanes which influence the load on the blades. The Third Francis-99 Tokke workshop, scheduled for 2018, will invite CFD companies and researchers to present models which specifically address this aspect of the problem.
 
For more information on the project please contact us on + 44 (0)20 3371 1709 or email us at info@renuda.com.
 
 
| NOVEMBER 2016 – Talking CFD, Code_Saturne and much more!
 

On the 22nd of November Nicolas Tonello spoke to Robin Knowles from Talking CFD about CFD, software development, training, owning a CFD consultancy and what Code_Saturne has to offer as an alternative to other open source CFD codes. To listen to the podcast click https://www.cfdengine.com/podcast/nicolas-tonello-renuda/ 

 

| JULY 2016 - Code_Saturne AND SALOME TRAINING IN SEPTEMBER

Renuda UK is delighted to announce the first in a series of London based Open Source CFD training courses on the 20th and 21st of September 2016. These courses will be based around the general purpose CFD solver, Code_Saturne, and the suite of pre and post-processing tools, SALOME

Course objectives

The objective of the CFD training course is to enable course participants to undertake a complete CFD cycle, from CAD generation to results analysis using the following open source software:

  • - CFDStudy - prepare directory and file structures
  • - SALOME - geometry generation, meshing, results visualisation and analysis
  • - Code_Saturne - simulating the fluid flow

Module 1

A review of fundamentals and approach to CFD modelling to familiarise participants with CFD requirements; vocabulary; essential topics related to the physics of CFD simulation; and the choices required when setting up a CFD model. This module assumes that the participants are familiar with the Navier-Stokes equations.

  • - Overview of fundamental Navier-Stokes equations
  • - Solution methods - finite volume method, time and space discretisation, algorithms and       convergence
  • - CFD Modelling
  • - Fluid properties
  • - Types of flow - steady state or transient, single or multiphase, compressible or incompressible, laminar or turbulent
  • - Boundary conditions
  • - Turbulence
  • - Best practices

Module 2

Introducing CFDStudy and Code_Saturne and an overview of CFDStudy, SALOME and Code_Saturne aimed at familiarising participants with:

  • - The different software packages and their role in the open-source simulation cycle
  • - Software installation
  • - The GUI interfaces
  • - SALOME CAD, meshing and analysis tools
  • - CFDStudy and Code_Saturne directory and file structures
  • - Code_Saturne‘s functionalities, user coding and running simulations

Module 3

Practical CFD analysis exercises to complete a CFD analysis with the open-source tools. Participants will build a model from scratch, starting with the creation of a study and case, followed by the geometry, meshing, boundary conditions, Code_Saturne setup, run, and analysis. Based on participant requirement, a choice of Code_Saturne ventilation and pipe flow tutorials will be available.

To register, please contact Robert Hillhouse on +44 (0) 20 8785 0986 or robert.hillhouse@renuda.com

*To learn more about Code_Saturne please visit www.code-saturne.org or for information on SALOME visit www.salome-platform.org.

 

| MAY 2016 – MODELLING FRANCIS-99 HYDRO TURBINES

Renuda, in partnership with EDF R&D, is engaged in an ongoing research project to perform full 3D, CFD modelling of Francis hydro turbines at different operating points and including transient operation.  The open-source platform SALOME and Code_Saturne CFD solver are being used to prepare the models, run, and analyse the unsteady calculations.  The results are scheduled to be presented at the Francis-99 Second Workshop in December 2016, for which our abstract has already been accepted.

F
or further information, suggestions or feedback regarding the program or Code_Saturne please call us on + 44 (0)20 3371 1709 or email us at info@renuda.com

 
| SEPTEMBER 2015 - RENUDA PARTNERS EDF!

Renuda - an independent CFD engineering company, for engineers, by engineers. After thoughtful consideration EDF signed a multi-year partnership with Renuda to accelerate the development of Code_Saturne, EDF’s Open Source CFD solver, and increase its user community worldwide. The reasons cited for the partnership were; the long-standing relationship between the two companies; Renuda’s independent stance on using Open Source and Commercial codes; software development skills; and knowledge across a diverse range of industries.  The research program calls for collaborative development of new functionalities such as free surface flow; extending existing validations to a wider range of applications and industries; the development and delivery of training material; and training to an increasing global CFD community. EDF’s confidence in the partnership bears testament to our resourceful CFD problem solving approach, software development ability and commitment to advancing CFD. 
 
For further information, suggestions or feedback regarding the program or Code_Saturne please call us on + 44 (0)20 3371 1709, +33 (0)4 27 49 26 38 or email us at info@renuda.com

 

| APRIL 2015 - RENUDA PRESENTS AT THE EDF Code_Saturne USER MEETING

Renuda was recently invited to present at the April 2015 Code_Saturne user meeting hosted by EDF in Paris. The user meeting is a platform for EDF and CFD users to share Code_Saturne case studies as well as an opportunity for EDF to showcase the latest developments for the open source code.

Renuda's presentation illustrated how difficult multi-physic industrial problems have been solved using Code_Saturne as part of an open source chain of CFD analysis tools. The applications presented were; optimising of a waste water purification system in order to minimise system pressure drop and maximise flow homogeneity; multi-species flow for the conjugate heat transfer in an exhaust gas heat recovery unit and assessing the efficiency of a combined coal and biomass power plant under different operating conditions.

For more information please contact us at info@renuda.com or visit the Code_Saturne website at http://code-saturne.org/cms/news/2015-edition-CodeSaturne-User-Meeting-update-program
 

OCT 2014  - RENUDA IS IN GERMANY! 

As part of our international growth strategy, we are pleased to announce that we are now providing local CFD expertise in Germany.

With this presence, our main goal is to ensure that our clients get the timely service and support they need.

For more details, please contact us at info@renuda.com

 

SEPT 2014  - RENUDA CELEBRATES 10 YEARS! 

Renuda is delighted to announce its 10 years anniversary. A decade rich in industrial challenges, innovation and success which you helped make possible.

We look forward to continuing to work with you for many years to come.

A huge thank-you from the Renuda Team.

 

| MAY 2014 – RENUDA BRINGS DESIGN TOOLS TO THE TURBO MACHINERY INDUSTRY

Renuda and Concepts NREC have recently signed a reseller agreement, for France and Benelux, to provide comprehensive software design tools for turbo machinery compressors, turbines, pumps and fans. Concepts NREC is a world leader in the design and manufacture of specialised equipment for turbo machinery. With this agreement, Renuda expands its range from providing Open Source CFD solutions to turbo machinery dedicated solutions which complements its turbo machinery expertise.

"Renuda's experience in CFD is impressive and we are looking forward to utilizing their strenghts to get our CFD software - and actually, our entire software suite - wider use and exposure in France and the Benelux countries," says Illias Mustafa, CN's Managing Director of Software Sales - EMEA (Europe, Middle East, Africa).

For more details, please contact us at info@renuda.com

 

| MAY 2014 – OUR NEWSLETTER IS OUT!

Discover our newsletter with a new downloadable Case Study and insights on Renuda's new product offer and talks.

-Simulation tools aid Alstom Transport to reduce costly prototyping

-Open Source Software and CFD

-Where is engineering analysis and simulation going?

-Renuda brings advanced solutions to the Turbo machinery industry

Click here to receive Renuda's quarterly newsletter

 

| MAY 2014 – DISCOVER OUR NEW CASE STUDY ON GEARBOX COOLING, OR HOW SIMULATIONS ARE NOT ONLY COST-EFFECTIVE BUT ALSO A POWERFUL TOOL TO ENGAGE DECISION MAKERS

Our new Case Study highlights an added benefit to simulations. Renuda’s CFD simulations and technical insights helped Alstom Transport avoid costly prototyping and quickly identify the root causes of overheating. The ability to visualise and understand flow patterns graphically also enabled them to communicate the different industrial solutions and engage better with their gearbox design team, leading to more efficient and faster decision making.

Click here to access the Case Study.

"I AM COMPLETELY CONFIDENT IN THE QUALITY OF RENUDA’S WORK, THEY HAVE PROVED TO BE VERY CAPABLE OVER A LONG PERIOD OF TIME. IT’S GOOD TO HAVE A COMPANY WHOSE EXPERTISE WE CAN RELY UPON". Denis CORNU, Expert Aéraulique & Thermique, ALSTOM Transport.

 

| MAY 2014 - SIMULATION DRIVES INDUSTRIAL AND BUSINESS PERFORMANCE

Meet us at the NAFEMS Conference Simulation numérique : moteur de performance in Paris on 4-5th June.  We will be presenting our works with Open Source simulations for complex and demanding industrial challenges.
For more information, please contact us at info@renuda.com.

 

| APR 2014 - WHERE IS ENGINEERING ANALYSIS AND SIMULATION GOING?

Renuda will present its works on testing and validating Open Source Software at the two-day conference organised by the NAFEMS UK on 10-11th June 2014 for “Accelerating the future of CAE”. The event will focus on existing best practices as well as state-of-the-art in CFD and CAD and more importantly what more there is to be achieved.
Come along and meet us on site, we will be pleased to discuss your projects.
For more information, please contact us at info@renuda.com
 


| MAR 2014 - FIND OUT ABOUT SOPHISTICATED SOFTWARE TO MODEL FREE SURFACE FLOWS

Our newly Case Study features the development of alternative code to solve CFD open source software challenges applied to the Marine energy industry.

Click here to access the Case Study.

"THIS IS A VERY TRICKY, CHALLENGING AREA TO WORK IN; RENUDA IS VERY GOOD AT IT". Professor David Ingram, Professor of CFD. Institute for Energy Systems, University of Edinburgh.

 

| JAN 2014 -  RENUDA : THE VOICE OF THE INDUSTRY

Renuda supporting and advising the UK Consortium on Turbulent Reacting Flows (UKCTRF) lead by Professor Nilanjan Chakraborty.
 
Officially launched on January 8th 2014 , the UKCRTF Kick off meeting  was reuniting leading academics from 15 UK Institutions joined by internationally recognised experts to form the UKCTRF.

Funded by EPSRC ( Engineering and physical sciences Research Council), the consortium  will make a focussed effort to address the global and UK challenges of energy efficiency, environmental friendliness and high-fidelity fire safety.
Renuda’s considerable industrial experience has been chosen as the industrial advisor (Impact Advisory Panel) of this major collaborative Research Program as long as with Rolls Royce, Shell and BP.
 
The UKCTRF will use High Performance Computing (HPC) resources to challenge engineering applications ranging from the formulation of reliable fire-safety measures to the design of energy-efficient and environmentally-friendly internal combustion engines and gas turbines. Results and the high-fidelity computational tools will aid UK based manufacturers to design new generation of combustion boosting the UK economy.
 
http://www.ukctrf.co.uk/

 

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