The Fik Identity and its Implication for Turbulent Skin Friction Control

Nobuhide Kasagi, Koji Fukagata

Research output: Chapter in Book/Report/Conference proceedingChapter

8 Citations (Scopus)


The identity equation derived by Fukagata, Iwamoto and Kasagi (Phys. Fluids 14 (2002) L73-L76) leads to a general strategy for accomplishing turbulent skin-friction drag reduction. This is demonstrated by referring to several typical examples of recently studied control schemes including local blowing/suction and surfactant additives. Based on the FIK identity and numerical experiment of direct numerical simulation, the performance of active feedback control of wall turbulence, which has been paid much attention over the decade but only has been studied at low Reynolds numbers, is estimated at higher Reynolds numbers. A possible control scheme for enhancing heat transfer while keeping skin friction moderate is also discussed.

Original languageEnglish
Title of host publicationTransition and Turbulence Control
Subtitle of host publicationVolume 8
PublisherWorld Scientific Publishing Co.
Number of pages28
ISBN (Electronic)9789812700896
ISBN (Print)9812564705, 9789812564702
Publication statusPublished - 2005 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • General Engineering


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