On the new parameterisation of the eddy diffusivity for radioactive pollutant dispersion Online publication date: Sat, 14-Feb-2015
by Davidson Martins Moreira, Pedro M.M. Soares, Antonio Gledson Goulart, Marco Tullio Vilhena
International Journal of Nuclear Energy Science and Technology (IJNEST), Vol. 6, No. 2, 2011
Abstract: In the present work, starting from the evolution equation for the turbulent energy density spectrum, we develop a new model for the growth of the turbulence in convective boundary layer. We apply dimensional analysis to parameterise the unknown inertial transport and convective source term in the dynamic equation for the three-dimensional spectrum. The non-linear integro-differential equation is solved by Adomian decomposition method. Using the micrometeorological parameters generated by large eddy simulation, for the first time, we employ the vertical component of the energy spectrum to calculate the eddy diffusivity (required in dispersion models). This new eddy diffusivity is used in the GILTT approach to simulate ground-level concentrations considering experimental data of Angra I Nuclear Power Plant.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nuclear Energy Science and Technology (IJNEST):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com