The effects of perforation sizes on laminar heat transfer characteristics of an array of perforated fins

Mohammad Reza Shaeri, Tien Chien Jen

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

Shaeri and Yaghoubi [25] reported the highest heat transfer rate in a laminar flow for a perforated fin with the most perforations (porosity), regardless of investigation on the effects of perforation sizes. In this study, the effects of size and number of perforations on laminar heat transfer characteristics of an array of perforated fins at the highest porosity of the study of Shaeri and Yaghoubi [25] have been numerically investigated. The Navier-Stokes and energy equations are solved by the finite volume procedure using the SIMPLE algorithm. Results show that at a specific porosity, the thermal entrance length of each perforation of a fin with a lower number of perforations is larger than that of each perforation of a fin with a higher number of perforations. Therefore, in a laminar flow and at a constant porosity, a fin with fewer perforations is more efficient to enhance the heat transfer rate compared with a fin with more perforations. Although perforated fins have higher friction drag and lower pressure drag with respect to solid fins, perforated fins do not affect total drag.

Original languageEnglish
Pages (from-to)328-334
Number of pages7
JournalEnergy Conversion and Management
Volume64
DOIs
Publication statusPublished - Dec 2012
Externally publishedYes

Keywords

  • Convection heat transfer
  • Heat transfer enhancement
  • Laminar flow
  • Perforated fin

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

Fingerprint

Dive into the research topics of 'The effects of perforation sizes on laminar heat transfer characteristics of an array of perforated fins'. Together they form a unique fingerprint.

Cite this