Cellular automata is a model that can simulate complex structure and process 摘要元胞自動機(jī)是可模擬復(fù)雜結(jié)構(gòu)和過程的模型。
Simulating complex functions with the use of basic commands offered by hardware , users can enjoy a friendly interface which has powerful capabilities rather than simple , primitive commands 通過使用硬件提供的基本命令來模擬復(fù)雜的操作,擴(kuò)展了硬件的功能,為用戶提供一個更加友好的操作界面。
All of results demonstrate the capability of simulating complex flow fields efficiently and robustly . the hybrid grids include two parts : structured or semi - structured grids near the wall and unstructured grids in the other field 混合網(wǎng)格是由在物面附近的結(jié)構(gòu)化或半結(jié)構(gòu)化的網(wǎng)格與其他區(qū)域的非結(jié)構(gòu)網(wǎng)格組成。
Extensive numerical studies have been performed in order to access the accuracy of the present approach , for example , the supersonic flow over the shuttle , and so on . all of results demonstrate the capability of simulating complex flow fields efficiently and robustly 應(yīng)用上述方法進(jìn)行大量的數(shù)值實驗,如計算航天飛機(jī)的超音速繞流、 m6機(jī)翼的跨音速繞流等,數(shù)值結(jié)果顯示,上述方法是行之有效的。
At the same time , complexity science has made a success in describing , simulating complex systems and applying these achievements in discussing evolution of complex systems and their essence of function , but it is incapable of controlling these complex systems 與此同時,復(fù)雜性科學(xué)在對復(fù)雜系統(tǒng)的描述與模擬,并將其應(yīng)用于探討復(fù)雜系統(tǒng)的進(jìn)化與功能的本質(zhì)方面取得了顯著的成功,但在控制這些系統(tǒng)方面還無能為力。
As an effective numerical analysis method of scientific and engineering problems developed following finite element method ( fem ) , boundary element method ( bem ) has some attractive advantages , such as easier simulating complex boundary shape , high accuracy and dimension reduction 邊界元法是在有限元法之后發(fā)展起來的一種精確高效的工程與科學(xué)問題的數(shù)值分析方法,具有便于模擬復(fù)雜邊界形狀、求解精度高、降維等優(yōu)點(diǎn)。
The results of the three dimensional simulation emphatically show flow characteristics change along the spillway width and furthermore verify that the combination of k - e turbulence model with the vof model and unstructured grid can successfully simulate complex three dimensional turbulent flow on the stepped spillway 三維計算著重體現(xiàn)了流場沿溢洪道寬度方向的變化規(guī)律,進(jìn)一步驗證了vof模型、非結(jié)構(gòu)網(wǎng)格與卜。紊流模型相結(jié)合能夠成功地模擬三維階梯溢流壩面復(fù)雜流場。
Because of its abilities of adaptively , autonomy and cooperation , the theory has superiority in process of solving complex problems and simulating complex system , hi this paper , a complex industry process control system based on multi - agent theory has been proposed and its realization on the field bus system also has been mentioned 本文從復(fù)雜工業(yè)過程控制生產(chǎn)發(fā)展的需要出發(fā),將multi - agent理論引入傳統(tǒng)的工業(yè)過程控制領(lǐng)域,提出了建立基于multi - agent理論的復(fù)雜工業(yè)過程控制系統(tǒng)的命題,并根據(jù)現(xiàn)場總線系統(tǒng)的特點(diǎn)對系統(tǒng)在現(xiàn)場總線上實現(xiàn)進(jìn)行了探討。
Computational fluid dynamics ( cfd ) techniques are used to study and understand fluid behavior in tunnels . by simulating complex specific operational cases , we can educe velocity or flux distribution in tunnel under different ventilation and resistance situation and determine the favorable operational procedures of the erlang mountain tunnel ventilation in a fire case . comparison has been made between a simulation and experiment for some cases in order to prove the cfd model is powerful , so that enables the study of cases for which experimental data is not available 采用本文將隧道內(nèi)的氣流看成是理想流體的一維恒定流動,通過對二郎山特長公路隧道半橫向通風(fēng)系統(tǒng)建立隧道內(nèi)的空氣動力學(xué)模型,利用計算機(jī)進(jìn)行數(shù)值分析與計算,得出發(fā)生火災(zāi)時,不同通風(fēng)阻力條件下隧道中的風(fēng)速分布及流量分布,并通過實驗室隧道模型實驗進(jìn)行驗證與修正,依據(jù)研究結(jié)果給出了二郎山半橫向通風(fēng)隧道的火災(zāi)控制方案,從而解決了二郎山公路隧道通風(fēng)對火災(zāi)的控制問題,同時為半橫向通風(fēng)公路隧道的火災(zāi)通風(fēng)提供科學(xué)的方法。