Figure 12. Transverse stream function distribution ψ/UBH reveals the secondary circulation of transverse flow cells rotating at the meander apex 1.5 s/B for channel curvature C = 0.77 (A), C = 0.33 (B), and C = 0 (C), with positive values representing clockwise rotation direction when facing upstream, and negative values representing counter-clockwise rotation when facing upstream.

Figure 12. Transverse stream function distribution ψ/UBH reveals the secondary circulation of transverse flow cells rotating at the meander apex 1.5 s/B for channel curvature C = 0.77 (A), C = 0.33 (B), and C = 0 (C), with positive values representing clockwise rotation direction when facing upstream, and negative values representing counter-clockwise rotation when facing upstream.