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Empirical relations for pipe and tube

The radiator pipe is the structure through which heat is rejected to space. Wall friction is turned off in favor of representing the desired friction factor with the Reynolds number dependent form loss coefficient option in RELAP5-3D. Idel chik (Reference 12-23) Section 8-2, paragraph 15, provides an empirical relation to determine the friction factor for flow past a bundle of vertically arranged tubes uniformly distributed over conduit cross sections. For a duct that is 3.8 cm wide with heat pipes in one row that have 12.5 cm between heat pipe centers and 2.2 cm outside diameters the equation for friction factor is ... [Pg.707]

See other pages where Empirical relations for pipe and tube is mentioned: [Pg.273]    [Pg.277]    [Pg.279]    [Pg.283]    [Pg.285]    [Pg.273]    [Pg.277]    [Pg.279]    [Pg.283]    [Pg.285]    [Pg.93]    [Pg.93]   


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