Tire Water Splash Dragos Moroianu Andreas Blixt Volvo Car - - PowerPoint PPT Presentation

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Tire Water Splash Dragos Moroianu Andreas Blixt Volvo Car - - PowerPoint PPT Presentation

May 09, 2023 290 likes •474 views

Tire Water Splash Dragos Moroianu Andreas Blixt Volvo Car Corporation FS Dynamics Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 1 Overview Background Current Approach New Approach Model description Results

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 1

Tire Water Splash

Dragos Moroianu Volvo Car Corporation Andreas Blixt FS Dynamics

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 2

Overview

Background Current Approach New Approach Model description Results Conclusion

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 3

About us

Volvo Car Corporation – Fluid Dynamics Center

  • 18 employees
  • support 5 attributes
  • start 1990

FS Dynamics

  • 150 employees
  • start 2004 (4 persons)
  • consultance in engineering applications with

solutions based on CFD/FEM

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 4

Background

What is splash? Why is splash a problem? Current splash CAE method description

4 Thursday, November 15, 2012

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 5

Speed between 30-65km/h Water depth 20-80mm Higher depth... Wading Even higher depth ... submarine

What is splash

5 Thursday, November 15, 2012

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 6

What is really the problem with splash?

  • Engine bay water contamination
  • High water loads on critical components
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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 7

Numerical (LPT) - hard to estimate trajectory after wall interaction

Background – Current approach

Experiments provide qualitative information

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 8

  • 2 way coupling - transient
  • Continuum for both phases
  • Surface tracking

Side Splashing a w

New Approach

Forward Splashing b w

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 9

Model Description

  • Incompressible flow
  • Multiphase (liquid/gas) - VOF
  • URANS (k-e, SST, Spalart-Almaras)
  • Large Eddy Simulation (Smagorinsky

subgridscale model)

  • Polyhedral mesh
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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 10

Model Description

D 4D 3D 50 mm symmetry Pressure outlet wwheel = 25 rad/s

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 11

Results

monitoring point

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 12

Splash – front view

Results

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 13

Splash – top view

Results

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 14

Splash – side view

Results

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 15

Splash - view from underneath

Results

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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 16

Conclusion

  • Method to predict the tire water splash
  • Important parameters: amount, direction, and load
  • Good frequency agreement with experiments
  • Good qualitative agreement with experiments
  • More work is needed for a robust procedure
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Global Marketing, Richard Monturo, RMONTURO, Issue Date: 26 June 2011 Page 17

Questions?