Sammanfattning

The effect of compartment resolution-scale, i.e. number of compartments and sompartment size, on prediction of transport of water and solute mass i watersheds is analysed by using numerical discretisation and temporal moments methods. The one-dimensional advection-diffusion model is used as a theoretical frame of reference for representing transport along a single series of compartments along a pathway in the surface water or ecosystem. Criteria for parameterisation of compartment models and error estimates are derived for two cases: (1) requiring and exact match with the advection-diffusion model; and (2) requiring as good match as possible with a simplified compartment model using a small number of compartments. The matching criteria are based on a comparison of numerical discretisation and temporal moments of the compartmental backflow model with those of the one-dimensional advection-diffusion ewuation and compartmental backflow model with arbitrary input concentration vs. time boundary cinditions and the physical parameters of the advective-diffusive equation. Data from tracer experiments were compared with model predictions to provide a practical fram of reference

Nyckelord

Compartment model; Advection-diffusion equation; Temporal moments

Publicerad i

Journal of Hydrology
2007, Volym: 335, nummer: 3-4, sidor: 364-373
Utgivare: Elsevier

SLU författare

• Wörman, Anders

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Fisk- och akvakulturforskning


Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/16299