A three-dimensional prediction method for thermal diffusion

Citation
Lx. Wang et al., A three-dimensional prediction method for thermal diffusion, CHINA O ENG, 12(3), 1998, pp. 309-321
Citations number
14
Categorie Soggetti
Civil Engineering
Journal title
CHINA OCEAN ENGINEERING
ISSN journal
08905487 → ACNP
Volume
12
Issue
3
Year of publication
1998
Pages
309 - 321
Database
ISI
SICI code
0890-5487(1998)12:3<309:ATPMFT>2.0.ZU;2-I
Abstract
A three-dimensional, first order turbulence closure, thermal diffusion mode l is described in this paper. The governing equations consist of an equatio n of continuity, three components of momentum, conservation equations for s alt, temperature and subgridscale energy, and an equation of state. In the model, according to the hypothesis of Kolmogorov and Prandtl, the viscosity coefficient of turbulent flow of homogeneous fluid is related to the local turbulent energy, and the horizontal and vertical exchange coefficients of mass, heat and momentum are computed with the introduction of subgridscale turbulence energy. The governing equations are solved by finite difference techniques. This model is applied to the Jiaozhou bay to predict thermal p ollution by the Huangdao power plant. An instantaneous tidal current field is computed, then the distribution of temperature increment is predicted, a nd finally the effect of wind stress on thermal discharge is discussed.