Shape optimization of a micro-channel using kriging model

Afzal Husain, Kwang Yong Kim

Research output: Contribution to journalArticlepeer-review


Microchannel heat sink shape optimization is performed using Kriging method. Design variables relating to microchannel width, depth and fin width are selected, and thermal resistance has been taken as objective function. Design points are selected through a three-level fractional factorial design of sampling method, Navier-Stokes and energy equations for laminar flow and conjugate heat transfer are solved at these design points using a finite volume solver. Solutions are carefully validated with experimental results. Using the numerically evaluated objective function, a surrogate model (Kriging) is constructed and optimum point is searched by sequential quadratic programming. The process of shape optimization greatly improves the thermal performance of microchannel heat sink under constant pumping power.

Original languageEnglish
Pages (from-to)733-740
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Issue number9
Publication statusPublished - Sept 2007


  • Kriging
  • Navier-Stokes equation
  • Optimization trchnique
  • Surrogate model
  • Trapezoidal mcrocharmel

ASJC Scopus subject areas

  • Mechanical Engineering


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