cosmos floworks

Streamline Your: Design Validation with FlowWorks Wed, April 11
Keith Pedersen Principal Engineer
FlowWorks 411 • Why ? – Flow and Thermal • Where & When ? • What ? ­ Capabilities • How ? – User Interface – Key Advantages • Who ? • What Next ?
The COSMOS Arsenal With so many modules to choose from… How much Thermal is Enough ?
Static Vibration Motion Thermal Flow Optimization Nonlinear Electromagnetic Post­ dynamics Post ­dynamics Why FlowWorks? FlowWorks? CW Adv. Professional CW Designer Static CW Professional Vibration Thermal Optimization Nonlinear Adv. Dynamics COSMOSMotion COSMOSFloWorks COSMOSEMS Motion Flow
Flow Electromagnetic Why FlowWorks ­ Thermal CosmosWorks ­ (Pro) FlowWorks • Conduction ­ Computed • Conduction ­ Computed • Convection ­ Estimated • Convection ­ Computed • Radiation – Estimated • Radiation – Computed – Environmental Only – Environmental & – Face­to­Face If you need to keep track of WHERE the Radiated / Convected heat goes … You need FlowWorks
FloWorks… Where ? ? Aerospace: aerodynamics Automotive: port flow Electronics 23% Packaging HVAC 3% 8% Machinery 3%
Medical 7% Measurement 2% Petroleum 6% Education 9% HVAC: room ventilation Valves 16% Other 8% Aero/Defense 3% Transport 12% Electronics: cooling study
Machinery: valve performance FlowWorks in Electronics • • • • • • • • • • • • • • Panasonic Eastman Kodak Siemens AG Intel Teradyne Canon Inc. AP Labs Furukawa Electric Co. Triton Networks Smart Fuel Cell Alcatel Ball Semiconductor General Electric CRD Dynarc • • • • • • • • • • • • Mitsubishi Electric Corporation Mykrolis Corp Cerprobe C­Cor.net Alteon Andrew Corporation Arichell Technologies Copper Mountain Global Thermoelectric Hendry Telephone Products Hitachi Joei Tech Co., Ltd. Hitachi Taga Technology Co., Ltd. • Interenvironment Design
FlowWorks in Medical • • • • • • • • • • • • Siemens AG GE Medical Medi Ject Corp Medtronic Minimed Bayer Corp – Diagnostics Southmedic Inc Perkin­Elmer Life Sciences Haemonetics Corp Wyle Laboratories/NASA SRI International Philips Medical Systems Becton Dickinson • • • • • • • • • • • • Cerprobe Resmed MediSystems Glaxo Smithkline Draeger Medizintechnik GMBH Guidant Corp Nova Biomedical Keymed Ltd Omnisonics Inc Abbott Diagnostics ADAC Labs Boston Scientific Corp
Why Invest in Analysis? Improve Product Quality 67% Avoid Field Failures 59% Reduce Number of Prototypes 56% Send an email to [email protected] to obtain a free copy of this report
Flow Analysis – When ? • Simulate prototype­&­test iterations • optimize designs on computer without building physical prototypes Design Analysis
Final testing Production Scope of Design Analysis • Failure Analysis – Traditional usage of analysis – Requires a greater level of expertise • Design Verification/Validation – Does this design work? – Does this design behave the way I think it does? • Proof of Concept – Testing out radical new concepts without “cutting metal” – When you dare to think outside the box • Relative Merit – Which of these candidate designs appears to be the best? – Weed out the lesser designs
What Can’t FlowWorks Do? • 2­D and 3­D Flows • Internal, External, & Both • Steady & Transient • Laminar and/or Turbulent Aerodynamic flutter and tank • But, no moving boundary surfaces head­space (free­surface) are both moving­boundary problems
What Can It Do ? • Porous Materials • Free & Forced Convection • Mixtures • Up to 10 Liquid / Gasses.. • But, Liquid & Gas cannot mix • Yet, includes Cavitation ! Flow problems can have both gasses and fluids, so long as they don’t mix
What Can It Do ? • Liquids: Incompressible, Compressible, and (if laminar) Non­Newtonian • Gasses: Sub, Trans, and Super­Sonic • No hypersonics or high­ grade vacuum • No Combustion, phase change, or reactions Hypersonic Re­entry problems (M<5) exceed the limitations of Navier­ Stokes field­flow
What Can It Do ? • Conjugate Flow and Heat – Also conduction­only problems – Includes contact resistances • Convection – Including buoyancy – Including wall roughness • Radiation – Both face­to­face & external • Particle Trajectories • Rotating Frames of Reference
How does it do all that? • Integrated within Solidworks • Each Flow Project links to a Configuration • Select the problem physics via the Project ‘Wizard’ • Apply Boundary Conditions and Goals via Flow Manager tab • Run the Solver interactively • Create your plots and movies on the results • Analysis stays associated with the CAD geometry Use the Project Manager folders the same way you manage Solidworks features
‘67 Dart – (Amphibious) Project Wizard Setup: – Use current (60mph) Configuration – I­P­S units – Air: Laminar and Turbulent – No Rotational frame – External Flow – 0 Roughness – No heat – ­X 1056 in/sec airstream, turbulence 5% – Result resolution = default Goals: Lift and Drag Domain: Ymin = 0, Ymax, Z’s = 300”
How Does it Work ? • Auto / Manual Mesher – Automatically detects flow cavities – Mesh is always orthogonal – Octal subdivision to refine details • Detects & refines thin walls and narrow flow gaps • You can refine the Mesh, your Goals, and Initial Conditions locally by creating Control Volumes • Time­slice and solution sensitivity are computed based on your Mesh, your Goals, and the Boundary Conditions. The Engineering Library includes standard and user­definable Fan performance curves
How Does it Work ? • Monitor the solver as it cooks ! • Catch and correct input errors • Stop and Re­start as needed – You decide if it’s “Done Enough” • Clone and ‘Resume’ related projects to speed convergence • Flow Freezing – for faster thermal • Adaptive Mesh and Solver refinement improves accuracy Unsteady problems need not run forever
Run­Time Mesh Refinement captures flow transitions accurately Zooming and Export • EFD Zooming ­ – For small details in large flows – Model a large­scale Project for the environment – Create a second Project whose Domain lies within the first – Map the large­scale flow parameters onto the boundaries of the smaller domain • Flow and Thermal – to Stress FEA – CosmosFlow ‘maps’ the temps and pressures onto model faces – CosmosWorks will read these as loads Large Scale Zoomed Sub­ Domain
Who can use FlowWorks? • Designer or Engineer – No P.H.D. required – Some basic Flow and Thermal terms, plus some intuition – 3 days training class • Needs a seat of the CAD – Prior Solidworks knowledge is useful – You can farm a problem off to another CPU on net. • You can do this … … CAP can help Answering design questions about fluid flow no longer requires a P.H.D.
Next Steps ? • Unstructured trials tend to drift from management goals • Unsupported trials tend to time­ out 1. Contact your CAP Account Manager 2. Identify a good test­project with clear goals 3. Elect 1 or 2 trial users and give them some elbow room 4. CAP engineers will guide them through an evaluation 5. Quantify your results to determine payback. You want your productivity investments to pay off. CAP can help you get there
Thank You Keith Pedersen Principal Engineer [email protected]