Optimal design of transverse ribs in tubes for thermal performance enhancement

Kyung Min Kim, Beom Seok Kim, Dong Hyun Lee, Hokyu Moon, Hyung Hee Cho

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


We conducted an optimization using the second-order response surface method to determine the transverse rib geometry required to achieve the highest cooling performance in a circular channel. The best rib geometry was based on three design variables; rib height, rib width, and rib pitch. The turbulent heat transfer coefficients and friction losses were first calculated and then used to determine the thermal performance. We constructed the response surfaces of the three design variables as functions of the average Nusselt number ratio, friction loss, and thermal performance. These functions led to the optimum design point at the highest heat transfer rate in the special case of an actual turbine cooling passage with a constant friction loss.

Original languageEnglish
Pages (from-to)2400-2406
Number of pages7
Issue number6
Publication statusPublished - 2010 Jun

Bibliographical note

Funding Information:
This work was supported by the Korea Research Foundation Grant funded by the Korean Government [ KRF-2008-357-00031 ].

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Renewable Energy, Sustainability and the Environment
  • Building and Construction
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Pollution
  • Mechanical Engineering
  • Energy(all)
  • Management, Monitoring, Policy and Law
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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