Circular ducts with fins

Circular Ducts With Thin Longitudinal Fins... [Pg.401]

TABLE 5.47 The Fully Developed (/Re)rf and NuH2.Laminar Flow in a Circular Duct With Longitudinal Fins [1]... [Pg.401]

Circular Ducts With Longitudinal Triangular Fins... [Pg.402]

Nandakumar and Masliyah [271] and Masliyah and Nandakumar [267] have analyzed fully developed laminar flow in a circular duct with equally spaced triangular fins, as shown in the inset in Fig. 5.45. The flow area and wetted perimeter for this type of duct are given by... [Pg.402]

FIGURE 5.45 Friction factors for fully developed laminar flow in a circular duct with longitudinal triangular fins [1]. [Pg.403]

Prakash and Liu [266] have numerically analyzed laminar flow and heat transfer in the entrance region of an internally finned circular duct. In this study, the fully developed / Re is compared with those reported by Hu and Chang [265] and Masliyah and Nandakumar [267]. The incremental pressure drop K(°°) and hydrodynamic entrance length L+hy together with /Re are given in Table 5.48, in which the term n refers to the number of fins, while / denotes the relative length of the fins. [Pg.401]

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