4/6/2024 0 Comments Flow of fluids pdfAn additional pair of vortices is obtained near the center of the outer wall at Re=400 for the model of four walls heated with temperature-dependent viscosity, y, while for constant viscosity, the appearance of two additional vortices near the outer wall cannot be found. The secondary flow with temperature-dependent viscosity is enhanced markedly as compared to constant viscosity. Water is used as the fluid and Reynolds number (Re) is varied in the range of 100 to 400. The cross-sectional dimensions of the rectangular duct are 2a and 2b. Both the cases of one wall heated and four walls heated are studied. An incompressible fully developed laminar flow in a helical rectangular duct having finite pitch and curvature with temperature-dependent viscosity under heating condition is studied in this work.
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