A simulation model and a program for the ecological condition of the used for irrigation river waters
2001
Nachkov, N. (Institut po Melioratsii i Mekhanizatsiya, Sofia (Bulgaria))
For the moddeling of the ecological condiction of the water in river basins and canals it is used the model DOSAG-I, which can be used for simulational investigations of the quality in stream flows. Developed is for simulation of the space and time variations of several spesific parameters of the quality of the water in stream flows ans canals disolved oxygen (DO). Biochemical demand of oxygen (BOD) and temperatures. The computer programm DOSAG-I consist of a main programm and subroutines written in FORTRAN-IV. The developed programm for computer realization is for 16 byte personal computers from the IBM-XT type and compatible with them with the use of the operational system DOS 3 and the following. The developed modells can be used for improvement of the operation of the irrigational systems by mathematical modelling of the river waters and the evaluation of their ecological condition at irrigational systems which work at conditions of water defficit, as a result of which a bigger part of the not secures with water areas can be satisfied with water.
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