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.
|Title of host publication||Transition and Turbulence Control|
|Subtitle of host publication||Volume 8|
|Publisher||World Scientific Publishing Co.|
|Number of pages||28|
|ISBN (Print)||9812564705, 9789812564702|
|Publication status||Published - 2005 Jan 1|
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