Effect of the geometric parameters on a flexible fiber motion in a tangentially injected divergent swirling tube flow

The effects of structural parameters on tangentially injected highly swirling turbulent tube air flow

“…There are swirling flows in many areas of our lives and engineering. "Swirling flow" [1] is defined as the rotating helical flow. For example, in nature events: tornadoes, hurricanes, water vents, etc.…”

“…The most important of these is the Number of Swirling (Sn). The integral definition of the swirling number is expressed as the ratio of the axial flux of the angular momentum to the axial momentum flux and radius multiplication [1,7,8].…”

“…Since these values cannot be known in advance, a geometric swirling number (Sg) can also be defined based on the ratio of mass flows in the twisting chamber and in the entrance cross-sectional areas. These values can also be defined in a geometric swirling number (Sg) based on the ratio of mass flows in the twisting chamber and in the air inlet entrance (injectors) cross-sectional areas as it is not previously known before the CFD (computational fluid dynamics) analysis or experimental studies are performed [1,9,10].…”

“…2, geometric swirling number (i.e. the swirl density) is dependent on the diameter of the twist chamber D tc , injector diameter d , injector angle , and the number of injectors N [1,10].…”

“…Guo [8] reported that the Reynolds Stress Model (RSM) is generally more reliable than twoequation models, but the RSM model needs large memory and processor time, and convergence is more difficult. As an alternative, the realizable k-ε turbulence model closes (1)…”