Publication Detail

Frequency selection and asymptotic states in laminar wakes.

George Em Karniadakis, George Triantafyllou
MITSG 89-13J

A better understanding of the transition process in open flows can be obtained through identification of the possible asymptotic response states in the flow. In this paper, the asymptotic states in laminar wakes behind circular cylinders at low supercritical Reynolds numbers are investigated. Direct numerical simulation of the flow is performed, using spectral- element techniques. Naturally-produced wakes and periodically- forced wakes are considered separately. It is found that naturally-produced wakes are periodic, but under forcing they undergo a series of transitions leading to chaos.

type: Technical reports

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Parent Project

Project No.: 1988-RT-21
Title: Study of the Physical Mechanisms Controlling the Instability of Jets