High values of klocal can be created, e.g., by metamaterial lenses, by phase and amplitude masks and also in free space optics including vortices and knots. An optical vortex presents a singularity (zero intensity point) with circulating field phase around, given by a topological number n (...
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Figure 8a shows that the shear rotations at the free end did not depend on the L/h ratio, as they remained constant with a value of 0.010 rad. In the case of the bending rotations, they increased nonlinearly with the slenderness changing from 0.020 rad when L/h = 1 to 4.501 rad when...
Additionally, the divergence-free wind–pressure field relationship is maintained (Figure 3b). Tests 2–4 all add another 10 cos φ (m/s) of equal latitudinal angular velocity; they turn as u Ψ 2 = 30 cos φ (m/s) (Table 3). In Test 2, under the action of advection at ( u ...
Additionally, the divergence-free wind–pressure field relationship is maintained (Figure 3b). Tests 2–4 all add another 10 cos φ (m/s) of equal latitudinal angular velocity; they turn as u Ψ 2 = 30 cos φ (m/s) (Table 3). In Test 2, under the action of advection at ( u ...
To solve the turbulent flow, the k-epsilon model was used for the 2D simulations, while for the three-dimensional simulations, the k-ω SST model was chosen for its better accuracy in the near-wall region and in free-shear layer flows. Before examining the combustor's flow field, the ...