Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Increasing environmental and energy concerns constitutes an encouraging development of future automobiles and autonomous vehicles that utilize cleaner and renewable energy. Although primarily an aerodynamic device, car rear spoilers experience various vibrations and limited attention has been given to exploiting these vibrations for generating alternative energy. This paper aims to investigate the potential of using the flow-induced vibration of rear spoilers on automobiles for energy harvesting. To that end, a fluid-structure interaction analysis of an inverted NACA 2408 spoiler behind an Ahmed body was undertaken. An Arbitrary Lagrangian-Eulerian flow solver was coupled to a non-linear structural dynamic solver using a commercial software application. The vibrations of the rear spoiler placed at 0, 50 and 100 mm below the top face of the Ahmed body under Reynolds number Re = 2.7 × 106 were simulated. It was found that the vibration of the rear spoiler at the highest elevation showed the largest amplitudes and strain, but the vibration of the rear spoiler at the lowest elevation offers an extended period of vibration before reaching a steady state. With the rear spoiler positioned at the highest elevation, a vibration frequency of 70 Hz and a steady-state principal strain of 350 may be achieved. These vibration levels compared well with previous investigation to sufficiently charge storage capacitors for wireless transmitters. The rear spoiler vibration may offer potential means for energy harvesting, and warrants further experiments under actual driving conditions.

Original languageEnglish
Pages (from-to)2415-2427
Number of pages13
JournalJournal of Mechanical Engineering and Sciences
Volume11
Issue number1
DOIs
Publication statusPublished - 1 Mar 2017

Fingerprint

Fluid structure interaction
Energy harvesting
Automobiles
Vibrations (mechanical)
Capacitor storage
Structural dynamics
Application programs
Transmitters
Aerodynamics
Reynolds number
Railroad cars
Experiments

Keywords

  • Car spoiler
  • Energy harvesting
  • Flow-induced vibration
  • Fluid-structure interaction
  • Piezoelectric

ASJC Scopus subject areas

  • Computational Mechanics
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential. / Mohammad Rasani, Mohammad Rasidi; Aldlemy, Mohammed Suleman; Harun, Zambri.

In: Journal of Mechanical Engineering and Sciences, Vol. 11, No. 1, 01.03.2017, p. 2415-2427.

Research output: Contribution to journalArticle

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