Sensor Network Routing Model Based On The Flow Field Of Conservation Laws

The research of this paper is focused on how to find an ideal routing method to make the data packets from source sensors getting to the central node of the sensor network,supposing that the location of every sensor node is fixed. The novelty of this paper is that a newer routing calculation method, used for the sensor node in the network field to find a routing by which the data packets are sent to the central node, adopts the analyzed result of fluid dynamics to simulate the forwarding of the data packets. This method breaks through the traditional ideal model, and relates the physical phenomena of fluid movement to the sensor's packets forwarding, getting a better routing result. According to the mathematics model of the fluid movement in the fluid field, making use of some popular analysing tools developed by foreigners for the analysis of the fluid movement model, such as Matlab and Fluent, we worked out the packets forwarding routing and simulated it with OmNet++. At last, we got a routing method which is faster in every sensor node's routing calculation, and has a short forwarding time delay, and its better efficiency consumes little cost.The first chapter of the paper summarizes the knowledge of the sensor network system structure and communications. Beside that, it also introduces the background of this paper. The second chapter depicts the requirs of the sensor network routing performance and some base knowledge of the fluid field. The sixth chapter sums up the whole paper and describes the forground. The important of this paper is the third, the forth and the fifth chapter.After the mass-conservation equation of the inviscid fluid had been deduced, we used the Matlab to work out the partial differential equation and painted the flow direction of every point in the inviscid fluid field. Finally, in the fifth chapter we used the simulation software of OmNet++ to imitate the packet forwarding vector field alike and got the packet forwarding routing in the packet vector field. Moreover, we analyzed and estimated the performance of the routing.The Chapter 4 of this paper analyzes the viscous fluid movement in the fluid field and deduces the momentum-conservation equation and the energy-conservation equation for the viscous fluid movement.Among those equations, the momentum-conservation equation means that the momentum transformation ratio with the time equals all of the outer forces on the given fluid system. The energy-conservation equation means that the power made toward a fluid system and the energy added to that system will equal the increasing energy for the system. The two equations and the mass-conservation equation deduced above make up the mathematics model of the viscous fluid movement. We applied the mathematics model to the analyzing tool for the fluid movement called Fluent.Then we used the tool analyzing viscous fluid to work out and simulate the fluid flow trace in the fluid field. In the end, we used these packet traces as the packet forwarding path, and simulated the packets delivered from source nodes to the central node with the simulation software called OmNet++ which was used in the fifth chaper, and eventually got the graph of routing along which the packets were forwarded. We analyzed and evaluated the routing performance.