introducing msc cfd solutionsdocs.mscsoftware.ru/conf/forum2017/day1/04_sct_msc_russia.pdf · ©...

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Introducing MSC CFD solutions

SC/Tetra (and scFLOW)

Yuya Ando

President

Cradle North America

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About Cradle

Products

SC/Tetra Overview

Overset Mesh

Examples by Industry

Coupled Solutions to Come

Contents

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Establishment: March 22, 1984

Offices:

Headquarters: Osaka, Japan

Branch Offices: Tokyo, Japan

Dayton, OH

Lyon, France

Affiliated: Bangalore, India

Taipei, Taiwan

Tokyo, Japan

HeadquartersOsaka, Japan

Cradle North America, Inc.Dayton, OH

Corporate Profile

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Products

Thermal, Fluid & Multiphase ThermalThermal & Fluid

GeneralBuilding

Architecture Electronics

>≈ >>

Electronics PCB

Unstructured Mesh Structured Mesh

Physics

Industry

Mesh

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SC/TETRA

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Concepts

– Easy

– Fast

– Accurate

History Behind SC/Tetra

AWARD:

2002: JSME Tech Award

2005: Awarded by METI (Ministry of Economy, Trade and Industry of Japan)

2006: AEI2006 Tech Awards (Automotive Engineering International)

2007: Certification of Visualization Award (APCOM)

2009: Best CFD Graphics Award (The Japan Society of Fluid Mechanics)

SC/Tetra V1 in 1997 on Windows

All-In-One Package

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All-in-one package CFD:

• Preprocessor

• Solver

• Pressure based FVM

• Density based FVM

• Adjoint Solver

• Linear Static FEM

• Postprocessor

• Optimization

History Behind SC/Tetra

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Mesh data

NASTRAN *.nas

UNIVERSAL *.unv

ABAQUS *.inp

CGNS *.cgns

Tecplot *

(.fmt, .p2dfmt,

p3dfmt, .dat)

Drag & Drop

Native CAD data

CATIA V4 * .model, .session, .exp

CATIA V5 * .catpart, .catproduct

PRO/E, Creo * .asm, .prt

Inventor * .ipt, .iam

SolidWorks * .sldprt, .sldasm

NX * .prt

SolidEdge * .par

Intermediate data

Parasolid XT *.x_t

STEP *.stp, .step

STL *.stl

DXF *.dxf

IGES * .iges, .igs

ACIS(SAT) * .sat

VDAFS * .vda

Data Import

Easy – Data Import

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2 million elements/1 GB RAM

With 64GB: 128 million elements

More complicated geometry

Better accuracy

2 M

1M

0.5M

# of meshComparison of the # of

elements per 1GB RAM

Efficient – Low Memory Comsuption

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Vehicle body

Comparison of Commercial CFD software held by SAE in Japan

CD CL

Experiment 0.245 -0.273

SC/Tetra 0.247 -0.275

Error <1% <1%

[Reference 1] Kumano, T. Et al., Wind Tunnel Testing of a 1/5 Scale Vehicle Model (in Japanese), JSAE symposium on Recent Activities in CFD toward Higher Quality, No. 08-06 (2006).

[Reference 2] Shimano, K. Et al., Wind Tunnel Testing of JSAE Standard Low- aerodynamic-drag Vehicle Body Using 1/5 Scale Model, Review of Automotive Engineering, Vol. 30, No.1, (2009).

Accurate

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CENTRIFUGAL PUMP BY TERAL INC.

REFER TO PDF

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Mesh Comp. Time (8 parallel)

Total drag, N

Experiment 52.8 - 54.48

SC/Tetra (SST k-ω) 5.7 Million 6 hours 53.14

Drag Prediction of Ship Hull (Bulkcarrier, St. Michaelis)

Accurate

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Diameter： 250 mm

Rotation speed： 25 rps

Propeller rotate region

570 2000600

OutletInlet

60

0Ship Propeller Cavitation (Potsdam Propeller Test Case)

Accurate

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KT (Thrust coefficient) Exp: 0.3725 Cal: 0.3750 (+0.67%)

Accurate

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Vertex-centered control volumes (Polyhedral CV)

3D image

Efficient and Accurate

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OVERSET MESH

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Velocity Mesh movement

Overset Mesh

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Overset MeshPositive Displacement Pumps / Valves

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Overset MeshInduced Motion, 6 degrees of freedom, Freesurface

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Fluid Structure Interaction

Large deformation due to Overset mesh

Overset Mesh

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Fluid Structure Interaction

Contacts due to Overset Mesh

Overset Mesh

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EXAMPLES IN VARIOUS INDUSTRIES

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AUTOMOTIVE

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Automotive – External Flow

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Automotive - Component Level Examples

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IGBTBattery pack

Battery cooling module

Automotive - Hybrid/Electric Car Parts

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Automotive

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SC/Tetra + Optimization + Automation

Bobsleigh

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SC/Tetra + Optimization + Automation

Current Model

Initial ModelCATIA V5

SC/Tetra Automation Optimization

Final Shape

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14 Design Variables

Multi Objective Function: CD & CL

SC/Tetra + Optimization + Automation

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SC/Tetra + Optimization + Automation

Base Model

Optimized Shape

Base model Optimized Model

CD 0.308 0.278CL 0.076 -0.129

-11%

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SHIPBUILDING

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Cruising Vessel Posture Simulation - Using Free Surface Analysis (By Yamaha Motor Co., Ltd.)

“The stabilizing fin is confirmed to lower the heel angle. The simulation correlated well with measurements.”

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CRUISING VESSEL POSTURE SIMULATION USING FREE SURFACE ANALYSIS

BY YAMAHA MOTOR CO., LTD.

REFER TO THE PDF

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Estimate Ship Hull Pressure Fluctuation due to Cavitation from the Propellers

Ship body: SeiunmaruPropeller: HSP-II, CP-II Scale: 1/16.293 RPM: 163

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Estimate Ship Hull Pressure Fluctuation due to Cavitation from the Propellers

Pressure [Pa]

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TURBOMACHINERY

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Fish Past (Non-Newtonian Fluid)

Positive Displacement (Using Overset mesh)

Single Screw Extruder

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Positive Displacement Pump (Using Overset Mesh)

Cavitation

Gear Pump

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AEROSPACE

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Transonic Flow (Mach number:0.729, Re= 6.5×106)

RAE2822 airfoil at 2.31º angle of attack.

– Turbulent flow with SST k-ω model

– Simulation results: Pressure distribution

Validation

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

0.0 0.2 0.4 0.6 0.8 1.0

-Cp

X/D

Experiment, lower surfaceExperiment, upper surfacePressure-based solverDensity-based solver

Reference[1] Cook, P. H. et al. Aerofoil RAE 2822 - Pressure Distributions, and Boundary Layer and Wake

Measurements. AGARD Report AR 138. 1979.

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Supersonic flow: shock wave propagation (Ma=5.09)

Validation

Reference[1] Bazhenova, T. V.; Gvozdeva, L. G.; Nettleton, M. A. Unsteady interactions of shock

waves. Prog. Aerospace Sci., 1984, 21(4), p. 249-331.

• SC/Tetra

• density gradient (animation)EXE. Schlieren photograph[1]

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Validation: NASA CRM

Analysis conditions (Challenge 1-1)

– Geometry: deformed shape measured in a wind tunnel experiment

– Conditions: M=0.847, Re=2.26×106, Tref=284 [K]

– Angle of attack (AoA): αc=-0.62, 2.47, 2.94, 3.55, 4.65, 5.72 [deg.]

M=0.847

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Validation: NASA CRM

Surface Cp distribution

– AoA α_c=2.94 [deg.] (no312)

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Validation: NASA CRM

Cross-sectional Cp distribution

– AoA α_c=-0.62 [deg.] (no302)

Section B

Section E Section I

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Validation: NASA CRM

Cross-sectional Cp distribution

– AoA α_c=2.94 [deg.] (no312)

Section B

Section E Section I

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V22-Osprey

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COUPLED SOLUTIONS TO COME

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Automotive - Aero Acoustic (SC/Tetra + Actran)

CFD Analysis by SC/Tetra Sound Propagation Analysis by Actran

Motorcycle Exhaust Systems

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SC/Tetra + Adams

SC/TetraADAMSCrosswind pushes the car away

ADAMSSC/Tetra

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SC/Tetra + Nastran/Marc

SC/Tetra was coupled with a 3rd party FEM software

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SC/Tetra + Nastran/Marc

Courtesy: Dr. George Huang, Professor and Chair of Mechanical Engineering, Wright State University.

SC/Tetra was coupled with a 3rd party FEM software

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Thank you for your attention