Laboratory and field interfacial energy and mass flux and prediction equations

Laboratory energy and mass flux results of Mangarella et al. (1971) are compared with field data cited by Monin (1970). Acceptable agreement exists for Reynolds numbers u*z0/ν ≥ 1, the predominant laboratory regime. A variety of flux prediction equations are examined for the laboratory data. Kitaigorodskii and Volkov's theory and Sverdrup's theory (with a constant diffusion thickness of 0.05 cm) show agreement with the measured fluxes. In general, the theories incorporating some type of diffusion layer hypothesis appear to be more appropriate. Reynolds analogy is shown to be applicable only for low roughness Reynolds number flows.