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Fluent is a popular CFD software package now, it can model complicated fluxion question from incondensability to the highly condensability. This article compares and analyzes the advantages and disadvantages of several algorithms which used by the commercial software Fluent. It is must be determined the model accordance to the actual situation in a number of algorithm. Accordance to compared, the...
In the simulation of concrete temperature by three-dimensional finite element, back analysis of the thermal parameters based on the establishment of improved accelerating genetic algorithm is very important. Based on the actual data measured in the field, the present paper uses improved accelerating genetic algorithms in back analysis of the concrete thermal parameters, good result is achieved. As...
In this paper two key factors of distributed sensor network for soil moisture monitoring are studied. One factor is the sensor design based on global navigation satellite system reflection (GNSS-R) signal, the other is the sensor placement. At first this paper introduces the construction and the advantage of non-contact soil moisture sensor, then the paper gives the optimization method based on greedy...
This paper using finite element analysis method, the calculation and study of static behaviors on the box of the two step retarder are performed. The finite element model of the box of retarder is established. A software-ANSYS is used to analyze the static behaviors of the retarder box. The stress and the strain are obtained, and the influence factors are analyzed interiorly. All studies provide the...
This thesis introduces a fault identifying method of automobile engine electronic control system based on principal component analysis. Aiming at the electronic control system of present-day engine and making use of the data stream of engine self- diagnosis system, the history data are getting together that reflects well-balanced circulating of engine. The principal component model is made via analyzing...
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