Heat transfer enhancement and torque reduction by traveling wave-like blowing and suction in turbulent Taylor-Couette flow

Direct numerical simulations of turbulent Taylor-Couette flows are performed to investigate the effect a traveling wave control on torque and heat transfer. In flow, inner outer cylinders rotating immobile, respectively, temperature difference between cylinder walls is maintained as constant. The ratio 0.882, Reynolds number set 84,000. A wave-like blowing suction imposed an wall. parametric study shows parameters We focused three characteristic parameter sets: transfer enhancement, relaminarization phenomenon, simultaneous achievement reduction enhancement. employed identity equations by using three-component decomposition clarify contributions from advection, turbulence, diffusion Stanton number. results indicated that affects turbulence advection contributions.