Graphical Modeling And Simulation For Fluid Network

Aim at stimulation research of fluid piping network, Making use of the C/C++ language and the environment of Motif in UNIX system in this paper, we improved the tool software Admire-F which simulate the fluid network exclusively and establish the mathematics model automatically bases on the graphics mode. This software is applicable to the incompressible fluid and the compressible fluid, it can calculates the flow of each flow-path and the pressure or temperature of each press-node in the fluid network with high accuracy and good real-time performance.In this paper, we describe design and realization of graphical modeling and graphic interface in the software tools . The mathematics model of fluid network is given in the paper according to the fluid mechanics theories. The wide degree preferential search method was adopted to scan the data of fluid network, the Gauss expunction method was adopted to solve the sparse matrix with simple algorithm, little consumption of computer time and quick approach to solution.In Admire-F graphical modeling system we applied an optimization technique to number the network node to decrease the number of non-zero element of the upper triangle matrix during solute the matrix equations. In addition we still adopted non-zero save method and non-zero calculation method to consumedly reduces the wastage of memory and computer time.The application of the User Interface Language being part of Motif provided many conveniences in developing the graphical interface of Admire-F in the way of speed and efficiency.