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Transmission line icing involves drop diameter, wind speed, temperature and other parameters. In this paper, according to the China Southern Power Grid micro-meteorological, icing master image, and site acquisition droplet spectrum data, we use fluent to simulate the insulator soft rime, hard rime of super-cooled water drip ice process field, calculation of insulator umbrella skirt edge, on the surface,...
In order to study the effect of common smoke control model, the numerical simulation combined with the full size experimental have been used to analyze effect of several modes, which composed with the smoke screen, mechanical smoke and air curtain, and the smoke temperature distribution, concentration distribution, and smoke down time between these model is compared. The results show that smoke preventing...
Multi-dimensional transient numerical simulation was done for low-temperature oxygen-enriched combustion process of 4100QBZL-2 diesel engine by using CFD software AVL-Fire and a simplified model of n-heptane oxidation coupling. To establish combustion chamber model and generate mesh with the ESE, in the computation process, FIRE will transfer and calculate the chemical kinetics model in each cell...
A simple biosphere model (version 2, SiB2) is an ecological model with high simulation accuracy, which can be used to simulate the dynamic change of the fluxes of water, heat and carbon. This paper simulated the dynamic change of the fluxes of energy and CO2 by SiB2 based on the observational data from June 20, 2005 to October 9, 2005 in Weishan experimental station. The results showed that SiB2 was...
To restrain the difficulty of model uncertainties, computational complexity and non-robustness in traditional method, A method for real-time diagnosis and accommodation of one single-redundant sensor of flight control system is presented, which is based on analytical redundancy. The analytical models of sensors are set up by using several kinematic and dynamic relationships between the given sensors...
Based on the study of the mechanics features of air spring including the nonlinearities in material, geometry, contact, the nonlinear finite element analysis was applied to study nonlinearity characteristic of air spring. The three-dimensional finite element model of a cystiform air spring was established with the method of nonlinear finite element analysis. The analytical results were confirmed by...
Influence Diagrams (IDs) are not only used to display a graphical representation of the qualitative structure of models, but also to improve the communication among subject-matter experts, analyzers, and decisionmakers, by showing the frame of issue discussed from a high-level point of view. This thesis provided a curt overview of IDs and its evaluating, then introduced the extended Time-Sliced IDs...
This study proposed a novel model of FCM based on activation. As for the causal inference process of a traditional FCM system, there exists the limitation of multiple computing. This paper presented an effective approach to address the problem that one node is multiple activated repeatedly. The proposed method will simplify the causal inference process and ensure the randomness and fuzziness of inference...
The coordinated attack strategy that plenty of sub-munitions attack multiple targets is one of key technologies in the networked smart sub-munitions studies. The distance and the encounter angle are the two main influence factors in the sub-munitions allocation. The decision-making model of coordinated attack strategy is built. The ant colony algorithm for the coordination attack strategy of sub-munitions...
The paper presents a design technique using adaptive backstepping method for the aircraft longitudinal flight path control laws. This control method constructs the Lyapunov function using backstepping loops, and designs on-line GCMAC neural networks used to study and compensate the unknown aerodynamic uncertainties in the plant model. Then, the neural network weights turn laws are designed based on...
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