Determination of relative positions and phase angle of dual piezoelectric fans for maximum heat dissipation of fin surface

Cheng-Hung Huang, Guang Yi Fan

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A three-dimensional computational model for dual piezoelectric fans on the bounded plane has been built using the commercial code CFD-ACE+, and the Levenberg-Marquardt Method (LMM) was used to estimate the optimal relative positions and phase angle of fans for minimizing the average temperature of the fin surface. The dual piezoelectric fans are originally placed in seven different positions (cases 1-7), and the LMM is then utilized to estimate the optimal relative positions and phase angle for increasing the thermal performance of dual piezoelectric fans. The simulations of numerical computations show that for each of the seven original fan arrangements, the optimal relative positions and phase angle of the dual fan are achieved using a singular arrangement in which both fans are located 0.95 mm below the center line of the fin and the in-phase operational condition is used. Finally, the temperature distributions of the fin for the original designs of cases 1 and 2 and for the optimal design of case 1 are measured using a thermal camera and are compared with the numerical solutions. The results indicate that the relative errors between numerical and experimental average fin temperatures at 600 s for original case 1, original case 2 and optimal case 1 are 0.68%, 0.52% and 0.68%, respectively, thereby validating the estimation method used herein to determine the optimal relative positions and phase angle of dual piezoelectric fans.

Original languageEnglish
Pages (from-to)523-538
Number of pages16
JournalInternational Journal of Heat and Mass Transfer
Volume92
DOIs
Publication statusPublished - 2016 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Fingerprint

Dive into the research topics of 'Determination of relative positions and phase angle of dual piezoelectric fans for maximum heat dissipation of fin surface'. Together they form a unique fingerprint.

Cite this