Papers by Keyword: Monte-Carlo

Abstract: In this paper, we focus on the interaction fluid-structure and specifically the vibro-acoustic problem. For the coupling fluid structure finite elements models, the importance of the size reduction becomes obvious because the fluid freedom degrees will be added to those of the structure. A method of condensation will be used to reduce the matrixes size. A numerical vibratory study is leaded on a structure 3D wing of aircraft in air taking the acoustic aspect into account. In this context, we focused very specifically on a deterministic and stochastic analysis through numerical simulations in 3D dynamic fluid-structure interaction problems.

Abstract: Slag concrete brick, as a kind of new materials utilizing wastes, is one kind of subsistent for clay brick. However, research on Slag concrete brick is very few, which restrains applying for slag concrete brick. By analyzing the reliability of the compress specimen with slag concrete brick masonry, the resistant statistic parameters are obtained and the computer probabilistic formula is established. Its reliability based on Monte-Carlo Method is calculated by means of Matlab. The result calculated is reasonable and reliable, which meets the requirement in rules. With the increasing of radio of live loading to dead loading, change tendency of reliability index of slag concrete masonry is that both sides are low and center is tall, and maximum appears between 0.5 and 1.0.

Abstract: Aiming at the coupling effect of target radiation measurement error and trajectory correction threshold to the hitting accuracy on the Last revised bullets, the optimal design solution based on Monte - Carlo method is proposed, and the CEP curve under the conditions of different correction threshold and target measurement errors by simulation is obtained. Moreover, objective indicators of measurement error and the corresponding threshold of amendments are given. A design basis for system development is obtained.

Abstract: For the sake of reflecting the concentrated heat flux distribution boundary condition as genuine as possible during simulation, the sequential coupled optical-thermal heat transfer analysis is introduced for porous media receiver. During the sequential coupled numerical analysis, the non-uniform heat flux distribution on the fluid entrance surface of porous media receiver is obtained by Monte-Carlo ray tracing method. Finite element method (FEM) is adopted to solve energy equation using the calculated heat flux distribution as the third boundary condition. The dimensionless temperature distribution comparisons between uniform and non-uniform heat flux distribution boundary conditions, various porosities, and different solar dish concentrator tracking errors are investigated in this research.

Abstract: Whether can seeker capture the ship target in target group is one of the important factors affect the anti-ship missile efficiency. By establishing the target capture probability models under various capture strategies and giving the Monte-Carlo simulation flow, this paper obtained the capture probability under various capture strategies by statistical methods. The result shows that because of the lack of comprehensive consideration of battlefield situation, the existing target capture strategies are difficult to finish the capture ship targets task efficiently; the result also indicates the target capture strategies direction.

Abstract: Front-end intercept probability of reconnaissance equipment is a significant evaluation index of radar reconnaissance system. It shows the ability of discovering and detecting radar signal in the front of reconnaissance equipment. In order to obtain the relatively authentic intercept probability, first, rules of intercept judgment are elaborated. Then front-end interception is devised through the reconnaissance equipment functional simulation. Finally, intercept probability is calculated in Monte-Carlo simulation, and an application verification is realized. The result indicates the method of intercept probability computation is feasible and has certain application.

Abstract: In this paper, how to analyses the downlink performance of the cellular system combining with site diversity operation and antenna diversity is introduced first. On the basis of Gaussian approximation of the interference components, the changes of bit error rate (BER) in the given set of channel is expressed in receiving signals. By using the Monte-Carlo numerical method, the local average BER is then calculated through comparing the conditional BER with the given set of channel gains. The outage probability is considered to measure the distribution of the local average BER and the downlink capacity. Computer simulation results are discussed finally.

Abstract: Strength of residual wall thickness reliability was studied by Monte-Carlo and finite element method, based on 40in X70 steel and 48in X80 steel which were often used in oil and gas transport pipeline. Pipe with defects in different residual wall thinkness, calculated the critical residual value of wall thickness, and analysed the defect depth and width of influence on pipe reliability. The results provide basis for pipeline safety evaluation and reasonable replacement.

Abstract: Monte-Carlo was applied to generate random traffic flow after frequent, moderate and rare earthquake respectively based on sample of vehicle investigation in“907”Zhaotong, Yiliang earthquake (2012), Yunnan province, considering vehicle parameters, such as types, driving, distance, ratio in earthquake-relief campaign. Vehicle load effect was analyzed for different spans of Simply Supported Beam Bridge, then characteristic value of lane loading which ruled by 《General Code Designs of Highway Bridges and Culverts(JTG D60-04)》(China) was revised. Research can not only provide standard for rapid estimate and repair of bridge after earthquake, but also give theoretical basis for revising anti-seismic codes or guidelines in China.

Abstract: Migration and diffusion of oil spill in sea is an extremely complex issue by the impact of the oil features and a variety of environmental factors, undergoing expansion, drift, evaporation, dispersion, emulsification, dissolution, photo-oxidation, biodegradation and their interactionsand many other processes ，at the same time has a direct relationship with the local meteorological conditions and law motionofseawater. Marine oil spill behavior analysis and research of the system, using VB technology and C#technical design and development of a marine oil spill simulation system based on Geographic Information System (GIS). The system using cloud-based GIS for a platform, using the Monte-Carlo method to simulate the behavior of chemicals in seawater on the system of cloud computing, the organic integration of GIS system application model