Coupling 1D and 3D CFD: The Challenges and Rewards of Co-Simulation

Computational Fluid Dynamics (CFD) is widely used across many branches of engineering including the Aerospace, Automotive, Biomedical, Chemical, Marine, Oil, Gas, Petrochemical and Power Generation industries. 

1D vs 3D

One dimensional (1D) CFD allows engineers to understand the flow rates and pressures, and how they might change, within a network flow system of interconnected components such as pipes, valves, junctions, pumps, controllers, fans and compressors – particularly as the operating state of the components changes, for example, as pumps speed up or valves close. 

In contrast, three dimensional (3D) CFD brings significant benefits to design engineers in understanding how detailed flows interact with all manner of complex plant and machinery and affect heat transfer and fluid flow, either increasing or decreasing drag (pressure drop).

By comparison, ‘system’ or 1D CFD calculations are typically much faster. When compared to 3D CFD calculations (which may take hours) they may take only minutes to perform. 1D CFD simulation calculations are relatively quick and provide a system overview.  In place of a detailed geometry and mesh, a comprehensive database of empirical and semi-empirical models, allows the analyst or designer to understand how a fluid system behaves – but without the detailed understanding of local behaviour that may come from a detailed 3D CFD model.

Coupling 1D and 3D CFD

Co-simulation of a 1D with a 3D model potentially offers the best of both worlds. It enables the sharing of boundary data between 1D and 3D models in a single or multi-domain system to facilitate the simulation the overall fluid system coupled with more detailed CFD simulation of 3D flows within a critical part of the network.  

Seminar Benefits

This seminar aims to:

• Explore the motivation for linking 1D system and 3D CFD models in terms of engineering and practical aspirations;
• Consider some of the key challenges in performing such analyses and how to rise to them; and
• Look at some of the commercially available options for addressing the technical need.

Please see attached for further details regarding the objectives and content of the seminar.

Agenda

09:30               Registration & coffee

                        Welcome & Introduction
                        Althea de Souza, dezineforce & David Kelsall, Flowmaster

                        System Simulation Meeting CFD – What’s New Today?
                        Vincent Soumoy, EURO/CFD

                        The Application of Two-Way 3D to 1D Coupling within Aircraft Systems
                        Darren Morrison, Airbus UK

11:15               Coffee break

                        ANSYS CFD Coupling to 1D Codes AMESim & GT-Power and Examples of 1D-3D 
                        Coupling
                        Dominik Scholz, ANSYS  

                        Coolant Flow Optimisation in the Engine Development Process
                        Roberto d’Ippolito, LMS International

                        1D-3D coupling with STAR-CCM+
                        Sreenadh Jonnavithula, CD-Adapco

13:00               Lunch

                        Generic Coupling of 1D System Codes with 3D CFD Tools by MpCCI
                        Pascal Bayrasy, Fraunhofer SCAI

                        Using Co-Simulation Middleware to Improve Aircraft Environmental Control
                        Systems
                        David Kelsall, Flowmaster

  15:00              Refreshment break 

                        Coupling 3D CFD Simulations with 1D Design Methodologies for Internal Flow 
                        Systems
                        Francesca Iudicello, ESDU

                        Buoyancy Driven Flow in a Complex Ventilation System
                        David Burt, MMI

16:20               Review & Discussion

16.40               Close

Who Should Attend

This seminar is aimed at analysts, engineers, researchers and designers and/or their managers who either have a need or otherwise wish to extend the capabilities of system models or CFD models to give a more detailed view of certain parts of their system, or a wider view of what is happening in the wider system away from a particular area of interest.

Venue

Heritage Motor Centre
Banbury Road
Gaydon
Warwickshire
CV35 0BJ
Tel : +44 (0)1926 645040
Web : www.conferencehmc.co.uk   
Location Map & Directions: http://www.conferencehmc.co.uk/conf_downloads/location_map.pdf

Accommodation

Church Hill Farm B&B
Church Hill Farm
Lighthorne
Warwickshire
CV35 0AR
Tel:01926-651251
Email:sue@churchhillfarm.co.uk
Distance: 2.8 miles
Single rooms from £40, B&B
http://www.churchhillfarm.co.uk/index.htm

Redlands Farm
Banbury Road
Lighthorne
Warwickshire
CV35 0AH
Tel: 01926 651241
Distance: 2.8 miles
Single rooms from £35, B&B
http://www.warwick-uk.co.uk/accommodation-hotel-bed-breakfast/view.asp?ref=92&type=hotel&location=OTHERS&sortby=NAME&fixedorder=TWINROOMS,+Name

Holiday Inn Express
Stratford Rd
Warwick
CV34 6TW
Tel: 01926-483000
Distance: 10.8 miles
Single rooms from £79, room only
http://www.ichotelsgroup.com/h/d/ex/1/en/home