Shape Optimization Using FRIENDSHIP-Framework and STAR-CCM+ CAE Test - PowerPoint PPT Presentation

Shape Optimization Using FRIENDSHIP-Framework and STAR-CCM+ CAE Test Case with KRISO KCS and MTU 90 ° Diffuser www.friendship-systems.com

Outline • Introduction • PART 1 KCS Case • Geometry • Integration • Optimization • PART 2 90 ° Diffuser • Parametric Model • Target • Optimized Result • Conclusion Engineering software for optimal products | 09.05.2012 | 2

INTRODUCTION Engineering software for optimal products | 09.05.2012 | 3

FRIENDSHIP SYSTEMS Founded 2001 in Potsdam/Berlin • • A GL Company, Marine Solution Part since 2009 • Developes and Provides CAE Platform ( FRIENDSHIP-Framework ) Supports Technical Issues and Projects • Engineering software for optimal products | 09.05.2012 | 4

Daehwan Park M.Sc. NAOE Pusan National University • • Ph.D Student NAOE Technical University Berlin • Project Manager FRIENDSHIP SYSTEMS Engineering software for optimal products | 09.05.2012 | 5

FRIENDSHIP-Framework CAD • FRIENDSHIP-Framework • Integration Interface the CAE platform • Optimization Engine CAD Optimization Integration CAD Integration Optimization Engineering software for optimal products | 09.05.2012 | 6

FRIENDSHIP-Framework CAE Experience CAD • FRIENDSHIP-Framework • Coupling Interface the CAE platform • Optimization Engine Neptune FINE/MARINE WAVIS FreSCO ICEM + CFX POSEIDON HydroMax NAPA Nu_SHALLO STAR CCM+ RAPID SHIPFLOW AUTOMATED MESH GENERATION • MACRO / JOUNAL • In-House Code • COMMAND FILE Engineering software for optimal products | 09.05.2012 | 7

Selected customers • DSME • HHI • SUNGDONG • STX • MOERI • Pusan National University • Mokpo National University • KAIST Growing Interest from 2010 by Korean Industries and Academic Field Engineering software for optimal products | 09.05.2012 | 8 8

Cooperation between CD-Adapco & FRIENDSHIP SYSTEMS FRIENDSHIP SYSTEMS CD-Adapco POTSDAM Nurnberg IGES STL FILES JAVA MACRO INTEGRATION OPTIMIZATION WIN-WIN Cooperation CD-Adapco team has never used FRIENDSHIP-Framework FRIENDSIHP SYSTEMS has never used STAR CCM+ Telephone, Email and Done!!! Engineering software for optimal products | 09.05.2012 | 9

PART 1 KCS Case Engineering software for optimal products | 09.05.2012 | 10

GEOMETRY Engineering software for optimal products | 09.05.2012 | 11

Import KCS model in IGES patches Main Principals • Lpp 230 M • B 32.2 M • D 10.8 M • Fn 0.26 (24 Knot) Reference Kim, W.J., Van, D.H. and Kim, D.H., (2001), “ Measurement of flows around modern commercial ship models”, Exp. in Fluids, Vol. 31, pp 567-578 Engineering software for optimal products | 09.05.2012 | 12

Desingularization • Singularity in • Divide patches Stern Valley Engineering software for optimal products | 09.05.2012 | 13

Desingularization • Extract 4 edge curves • Create coons patch • Singluarity disappeared Engineering software for optimal products | 09.05.2012 | 14

Desingularization • Singularity in • Subdivision Bulb Engineering software for optimal products | 09.05.2012 | 15

Desingularization • Singularity in • Regularity after Bulb Subdivision Engineering software for optimal products | 09.05.2012 | 16

Desingularization • Duplicated IGES Patch • Cut the corner Engineering software for optimal products | 09.05.2012 | 17

Fill Deck Surface • Produce deck surfaces from the given patches Engineering software for optimal products | 09.05.2012 | 18

Water-Tight Trimesh Tolerance 0.01 Tolerance 0.07 Adaptive Tesselation Error 0.01 Adaptive Tesselation Error 0.01 • Joint the patches with gaps Engineering software for optimal products | 09.05.2012 | 19

Water-Tight Trimesh 1_Trimesh Trimesh Hull 2_Trimesh 2_Trimesh 2_Trimesh 2_Trimesh Engineering software for optimal products | 09.05.2012 | 20

Water-tight Trimesh Trimesh Deck Trimesh Hull Trimesh Transom Engineering software for optimal products | 09.05.2012 | 21

Hydrostatics for Sactional Area Curve Extraction offset groups from IGES surfaces • Engineering software for optimal products | 09.05.2012 | 22

Hydrostatics for Sactional Area Curve • SAC as input in Lackenby variation Engineering software for optimal products | 09.05.2012 | 23

Lackenby Variation & Design Variables Dv_dLcb Image Trimesh Dv_fbdyTanEnd Dv_fbdyTanBeg Engineering software for optimal products | 09.05.2012 | 24

Export STL • Export the varied image trimesh as STL format. .exportSTL() or .exportColourSTL() • Engineering software for optimal products | 09.05.2012 | 25

Integration Engineering software for optimal products | 09.05.2012 | 26

Integration Definition Computation Configuration (Compute and (Define Input & (Set Input Values) Output) Read Output) Engineering software for optimal products | 09.05.2012 | 27

Integration • Definition Java Macro Template files Sim File Integration Deck.Stl Editor Entries Input Files Hull Stl Transom Stl Result Files Result Table (CSV) Screenshot 1 Screenshot 2 … … Engineering software for optimal products | 09.05.2012 | 28

Integration • Definition Example : JAVA Macro Integration • Just import java macro file Engineering software for optimal products | 09.05.2012 | 29

Integration • Configuration Deck.Stl FRIENDSHIP- Hull Stl Framework Transom Stl Result Table (CSV) Wave Elevation Wave Center STAR CCM+ Profile Drag Convergency Streamline Engineering software for optimal products | 09.05.2012 | 30

Integration • Computation Argument for POD license • "-power -podkey 98XXX/x3xXX3Xd/91X9XX== -licpath 1999@flex.cd-adapco.com -batch automationScale.java setup.sim" • Set argument • Set the executable path Engineering software for optimal products | 09.05.2012 | 31

Integration Test Computation • Computation Very small Max. Physical Time (6e-2) • • Check if STAR-CCM+ is integrated.c Engineering software for optimal products | 09.05.2012 | 32

OPTIMIZATION Engineering software for optimal products | 09.05.2012 | 33

Automated Optimization Optimum Design FRIENDSHIP-Framework Optimization Engine Form Variation Decision Making < 1. Writes> < 2. Triggers> < 6. Reads> *.csv STLs *.png JAVA Macro SIM < 4. Run> Mesh Gen & STAR CCM+ Computation < 5. Writes> < 3. Reads> Engineering software for optimal products | 09.05.2012 | 34

Computation Environment in CD-Adapco • Maximum Physical Time 20.0 • 6 Threads • Linux • Duration per Computation About 2 hours Selected Max. Physical Time 20 Full Max. Physical Time 30 Engineering software for optimal products | 09.05.2012 | 35

Geometry Scaled Scaling is implemented in JAVA macro. Model Scaled in 1/31.6 Lpp 7.27 • B 1.02 • D 0.34 • • Fn 0.26 • Rn 1.4x10^7 Engineering software for optimal products | 09.05.2012 | 36

Global Search with Sobol Design variables Dv_dLCB [ -0.01, 0, 0.01 ] Dv_fbdyTanBeg [ -30, 0, 30 ] Dv_fbdyTanEnd [ -30, 0, 30 ] Objective Drag force Variants number 20 Engineering software for optimal products | 09.05.2012 | 37

Select the best variant Original Selected Dv_dLCB = 0.00125 Dv_fbdyTanBeg = - 3.75 Dv_fbdyTanEnd = - 18.75 Drag original 44.2 Drag selected 43.55 (-1.5%) Setions at regular stations Engineering software for optimal products | 09.05.2012 | 38

PART 2 MTU 90 ° Diffuser Engineering software for optimal products | 09.05.2012 | 39

90 ° Diffuser Integration via Case Study • In collaboration with MTU Friedrichshafen GmbH • Diffuser: engine component which turns flow of around 1kg/s, direction change of 90 ° • Hot exhaust gas at approximately 500 ° C • Design study for curved part • Compare with CFD results of a diffuser which is in service Engineering software for optimal products | 09.05.2012 | 40

Parametric Model Design Variable Elbow Shape by Volume Parameter • Engineering software for optimal products | 09.05.2012 | 41

Target Pressure Drop at Bend Exit • • Uniformity Index at Bend Exit Engineering software for optimal products | 09.05.2012 | 42

Optimized Result Objective Original Model MTU Trial and Error Automated Optimization Pressure Drop [mbar] 47 15 14 (The Lower The Better) Uniformity Index 0.51 0.86 0.87 (The Higher The Better) Engineering software for optimal products | 09.05.2012 | 43

Optimized Result Engineering software for optimal products | 09.05.2012 | 44

Conclusion & Outlook • Auto-Mesh and JAVA Macro of STAR-CCM+ is main feature of this CAE process. • Integration is done in 5 minutes. • Global search leads designers to the further intuition. • Enlarge CAE cases between STAR-CCM+ and FRIENDSHIP-Framework Engineering software for optimal products | 09.05.2012 | 45

Thank you very much for your attention FRIENDSHIP SYSTEMS GmbH Benzstr. 2 14482 Potsdam Germany park@friendship-systems.com www.friendship-systems.com