Mathematical simulation methods of the flow in fluid element. Numerical solution of simple RLC circuit using Matlab-Simulink, Matlab-Simulink-SimHydraulics. Application of Laplace transformation on RLC circuit, frequency analysis, FFT method, stability. Solution of pipe fluid flow and other fluid elements using centralized parameters model (T and PI element). Solution of pipe fluid flow using continuous distributed parameters model. Experimental investigation of fluid circuit dynamics, transitional characteristics and comparison with mathematical models. Composition the elements into circuit, laws of junction and circuit, dynamics of resistive circuits, solution using Matlab-Simulink-SimHydraulics.