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The variation of water depth, during propagation of tidal waves through a channel, changes the hydraulic friction as well as hydraulic inertia in a non-linear fashion. The non-linear change of hydraulic inertia introduces a distortion in the propagating wave which advances the wave crest, and retards the wave trough. So far, this effect had been neglected in the electronic analog model of a tidal channel.
In this paper an attempt has been made to develop an interia simulator with proper functional dependence as in the prototype. [ABSTRACT FROM AUTHOR]

In the design of an electronic analogue model of a tidal channel, the hydraulic parameters of the channel have to be scaled properly. In the method of scaling previously discussed the hydraulic parameters were all assumed to be linear, which constituted a drawback to the method, especially because the non-linearities in hydraulic friction are too considerable to be neglected. In this paper an attempt has been made to scale the non-linear hydraulic friction simulator in accordance with the prototype parameters. The outlines of the setting up of a complete analogue model together with some results that can be obtained with the help of the model are also given. [ABSTRACT FROM AUTHOR]

Discretizing of fields is important in analogue simulation because it permits the construction of analogue models using lumped electrical elements, which are easier to design, manipulate and specify with high accuracy and precision. Such a process Of lumping in turn introduces an error in the propagation characteristics of the analogue model simulating the prototype. In this paper an attempt has been made to evaluate the error in the propagation characteristics of the lumped analogue model of a tidal channel. [ABSTRACT FROM AUTHOR]

Propagation of tidal waves in a tidal channel and that of electromagnetic waves in an electrical transmission line are similar, as can be seen by noting the similarities between the differential equations which characterize the two systems. The latter can be used as the analogue model of the former, provided the variables, constants and parameters are properly sealed for the corresponding quantities available in the model. This paper describes the method of scaling to relate the corresponding parameters and variables in the two systems. [ABSTRACT FROM AUTHOR]

In an electrical analog of a tidal channel the simulation of friction by electrical resistance poses a serious problem, since hydraulic friction between two sections depends not only on the discharge but also on the existing water depth, while a normal electrical resistance element is independent of either current flowing through it or of the potential difference across it. in this paper an attempt has been made to develop an analog electronic circuit, using transistors and diodes, the resistance of which varies in the same non-linear fashion as does friction in its prototype. [ABSTRACT FROM AUTHOR]