In this paper, the pressure field is decomposed into rotation-induced and convection-induced components to analyze the effects of streamwise system rotation on the pressure fluctuations and the transport of Reynolds stresses. We show analytically that the system rotation acts as a “linear amplifier”, which converts high-wavenumber low-amplitude streamwise vorticity fluctuations into low-wavenumber high-amplitude pressure fluctuations, and facilitates the growth of streamwise-elongated Taylor–Görtler-like (TGL) vortices. A new set of transport equations in the spectral space is derived to study the budget balance of velocity-spectrum tensor at different wavelengths. The mechanisms underlying the generation of TGL vortices are explained through the analyses of the budget balance of Reynolds stresses and energy spectra.
|Original language||English (US)|
|State||Published - Jan 1 2019|
|Event||11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019 - Southampton, United Kingdom|
Duration: Jul 30 2019 → Aug 2 2019
|Conference||11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019|
|Period||7/30/19 → 8/2/19|