feflow_user_manual_classic.pdf

Inputs fluxes in to the areas or border sections are

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Inputs (fluxes in) to the areas or border sections are counted as positive, outputs (fluxes out) as negative quantities. The imbalance corresponds to the sum of all entering and exiting amounts: Imbalance = BorderIn + BorderOut + WellIn + WellOut + ArealIn + ArealOut A positive imbalance implies a gain, e.g, storage in the aquifer at transient conditions. A negative imbal- ance indicates a loss in the (sub)region, which can occur during transient dewatering or retardation in the aquifer. For steady-state conditions, the remaining imbalance for a total balancing over the entire region represents a measure of the computational accuracy. For more details and the meaning of balancing for dif- ferent transport formulations (convective or divergence forms) and their different boundary conditions refer to the Reference Manual . qÜÉ ãÉ~åáåÖ çÑ ÚÑäìñÉëÛ ÇÉéÉåÇë çå íÜÉ ëÉäÉÅíáçå ÄÉíïÉÉå `çåîÉÅíáîÉ Ñçêã íê~åëéçêí EÇÉÑ~ìäíF ~åÇ aáîÉêÖÉåÅÉ Ñçêã íê~åëéçêí áå íÜÉ léíáçåë ãÉåì çÑ íÜÉ pÜÉääK cçê íÜÉ ÑçêãÉêI ÑäìñÉë ~êÉ ÇáëéÉêëáîÉI áKÉKI íÜÉó ~êÉ ÅçåíêçääÉÇ çåäó Äó íÜÉ ÅçåJ ÅÉåíê~íáçå Öê~ÇáÉåíK cçê íÜÉ ÇáîÉêÖÉåÅÉ ÑçêãI íÜÉ íçí~ä ÑäìñÉë Åçåëáëí çÑ íÜÉ ÅçåîÉÅJ íáîÉ ~åÇ ÇáëéÉêëáîÉ é~êíëK mäÉ~ëÉ êÉÑÉê íç íÜÉ cbcilt tÜáíÉ m~éÉê Û^Äçìí íÜÉ ÇáÑJ ÑÉêÉåÅÉ ÄÉíïÉÉå íÜÉ ÅçåîÉÅJ íáîÉ Ñçêã ~åÇ íÜÉ ÇáîÉêÖÉåÅÉ Ñçêã çÑ íÜÉ íê~åëéçêí Éèì~íáçåÛK qÜÉ èì~åíáíáÉë ÅçãJ éìíÉÇ Äó íÜÉ _ìÇJ ÖÉí ~å~äóòÉê ~êÉ ÇÉÑáåÉÇ éçëáíáîÉ Ñçê áåÑäìñÉëI åÉÖ~íáîÉ Ñçê çìíJ ÑäìñÉëK qÜáë áë Åçåíê~êó íç íÜÉ ÇÉÑáåáíáçå çÑ íÜÉ ÄçìåÇJ ~êó ÅçåÇáíáçåë> Figure 6.11 Budget analyzer.
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cbcilt SKM `ä~ëëáÅ ö UT SKR _ìÇÖÉí The fluid, contaminant and heat budgets are com- puted based on the integrated-discretized balance equa- tions using the Continuous Boundary Flux Method (CBFM) of evaluating the fluxes at the best accuracy. The Budget analyzer menu (Figure 6.11) contains a number of options. Use the toggles to select between fluid flux mass, contaminant flux mass and geothermal flux heat. Fluid flux mass results in the balancing of the flow equation. Contaminant flux mass results in the balancing of the mass transport equations. Geo- thermal flux heat results in the balancing of the heat transport equations. Subareas for balancing may be defined interactively by digitizing polygons on the model area or by importing background maps as tem- plates.
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