Influence of mathematical net step on calculation of grounwater depth

Abstract

Geofiltration is one of the most complex and important environment factors influencing the reliability and durability of operating constructions and equipment; thus, it is necessary to know its main parameters. They are determined by geofiltration modeling. The mathematical net, in the knots of which the calculated data is imported, is formed in the modeling territory. If an incorrect mathematical net step is chosen, a model docs not match the real situation and the piezometric and hydraulic pitches are distorted. In this way, the accuracy of calculation and modeling is worse. The aim of this work is to determine the influence of mathematical net to the calculations of ground waler depth in modeling the trench. 30 estimated variants of the analyzed geofiltration modei, the characteristics of which are different, were modeled applying sparse and fine mathematical net. According to the results, it is noticed that the modeling error, which can reach even 100%. depends on the period of calculation and (lie total rcsullanl coil conductivity. The diagram of the conncection between the error of resultant coil conductivity and ground water depth was formed. Having the results and knowing the period of calculation and the total resultant coil conductivity, it is possible to foreseen the influence of (he mathematical net (o modeling results before starting to model the already researched or similar cases. This research, carried out using the computer program of geofiitration modeling PLAF1. can be applied to all the computer programs of geofiitration modeling, choosing the mathematical net and its step in various areas of hydraulic network of the modeled territory.