wind and drivetrain applications using simulia xflow … · om s | 8 f 7 wind and drivetrain...

3DS

.CO

M©

Das

saul

t Sys

tèm

es| 4

/24/

2018

| ref

.: 3D

S_D

ocum

ent_

2017

Wind and Drivetrain Applicationsusing SIMULIA XFlow LBM

Zaki AbizaXFlow Business Development

[email protected]

4th Wind and Drivetrain ConferenceHamburg, April 19th 2018

2

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Introduction

Numerical Methodology

Wind Turbine Aerodynamics

Drivetrain Lubrication

Offshore Wind Turbines

Content

3

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Introduction





Content

4

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

SIMULIA CFD Strategy

Fidelity

Sim

ulat

ion

valu

e

Steady state &Low unsteady flow

High fidelity

SIMULIA Navier-Stokes

SIMULIA Lattice-Boltzmann

LBM for simulations beyond physical tests

5

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Introduction





Content

6

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Lattice-Boltzmann Method

Numerical Scheme

Macroscopic variables are statistical moments of the particle distribution function (f)

6

Density

Linear momentum

f = f (x,v,t)

27 velocity directions in 3D

Structure D3Q27

Collision operatorwith a unique XFlow collision

operator in central moments spaceParticles streaming

7

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Lattice Structure

Discretization Scheme

Set of 27 PDF at each lattice nodes, Data stored in Octree structure

Generated based on input resolved scale and geometries

Supports multi-resolution

Adaptive & dynamic refinement: wake, moving parts, free surface interface

Wake = 0.01 m

Far Field = 1.28 m

Walls = 0.005 m

Lattice structure illustration

Far field scale = hNear walls scale = h/4

8

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Turbulence ModelLarge-Eddy simulation (LES)

Turbulence modeling: Wall-Modelled LES (WMLES)

Boundary layer modeling: generalized law of the wall

9

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Introduction





Content

10

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Wind Turbine DynamicsReal rotating blades at real scale Wake adaptive refinement

11

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Flow interaction between different wind turbines

Wind Turbines Field

12

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Vertical Axis Wind Turbines (VAWT)VAWT starting characteristics

13

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Parts breaking and trajectory

Parts Separation

14

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Parts SeparationIce detachment and trajectory

15

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Introduction





Content

16

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

3-gear elements drivetrain


17

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Drivetrain LubricationChain driven gears

18

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Simple Gear LubricationDrivetrain lubrication and thermal analysis

19

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Introduction





Content

20

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Offshore Wind Turbine TowerCase study: Wind effect on the flow around an offshore wind turbine tower

Water level at Y = 0 m

Submerged part: 60 m

Water velocity: 10 [m/s] for Y < 0 m

Wind velocity: 20 [m/s] for Y > 0 m

3 configurations:

1. Free Surface flow: no wind, only water

2. Multiphase flow: water and fixed wind

3. Multiphase flow: water and wind sweepVelocity law:

X: 20*cos(ω*t) [m/s]

Y: 0 [m/s]

Z: 20*sin(ω*t) [m/s]

60

m

13

8 m

Water surface

21

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017






3 configurations:





Y: 0 [m/s]


Water velocity

22

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Free-surface flow: No wind effect, only water simulated

Offshore Wind Turbine Tower

23

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017






3 configurations:





Y: 0 [m/s]


Wind velocity

Water velocity

24

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Offshore Wind Turbine TowerMultiphase flow: Effect of the wind on the free-surface of water

25

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Offshore Wind Turbine TowerFree-surface flow Multiphase flow

More perturbations on water surface with multiphase flow

Lower frontal water elevation with multiphase flow

26

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017






3 configurations:





Y: 0 [m/s]


Wind sweep

Water velocity

27

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Offshore Wind Turbine TowerMultiphase flow: Wind direction effect on the water wake

28

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

The main wind and drivetrain applications of SIMULIA XFlow:




Summary

29

3DS

.CO

M/S

IMU

LIA

© D

assa

ult S

ystè

mes

| 4/

24/2

018

| ref

.: 3D

S_D

ocum

ent_

2017

Zaki AbizaXFlow Business Development

[email protected]

Danke!

wind and drivetrain applications using simulia xflow … · om s | 8 f 7 wind and drivetrain...

Documents