Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
Turbulent pipe flows with a rectifier part composed of several narrow tubes are calculated by the large eddy simulation (LES) incorporated with the immersed boundary (IB) method and the effect of the construction of the rectifier tubes on the turbulent field is investigated in the present work. The bulk mean streamwise velocity increases as the number of rectifier tubes decreases, and that of the calculated rectifier with the smallest number of tubes is six percentage larger than the actual one. Moreover, it is shown that the smallest-type rectifier has the suppression of the turbulence almost like the actual one.
