搜索结果: 151-165 共查到“化工系统工程其他学科”相关记录174条 . 查询时间(1.771 秒)
An NT-MT combined method based on nodal test (NT) and measurement test (MT) is developed for gross error detection and data reconciliation for industrial application. The NT-MT combined method makes u...
用NRTL方程推算高压汽液平衡并同时描述过量焓
高压汽液 平衡性 过量焓
2009/2/23
The non-random two liquids （NRTL） equation together with the Pitzer/Curl Virial equation of state are used to investigate the simultaneous representation of excess enthalpies （h^E） and vapour-liquid e...
用各向异性代数应力模型数值模拟搅拌槽中的三维全流场
agitated vessel anisotropic algebraic stress model numerical simulation
2009/2/23
In accordance to the anisotropic feature of turbulent flow, an anisotropic algebraic stress model is adopted to predict the turbulent flow field and turbulent characteristics generated by a Rushton ...
A new correlation for the prediction of gas hold up in bubble columns was proposed based on an extensive experimental database set up from the literature published over last 30 years. The updated es...
用伪并行遗传/模拟退火算法进行多流股换热器网络综合的研究
multi-stream heat exchanger network synthesis non-isothermal mixing
2009/2/23
The multi-stream heat exchanger network synthesis (HENS) problem can be formulated as a mixed integer nonlinear programming model according to Yee et al. Its nonconvexity nature leads to existence o...
用相指示器函数方法(分散元概率密度函数)推导及验证湍流稀两相流动的欧拉-欧拉模型
two-phase flow turbulence phase indicator function
2009/2/23
A statistical formalism overcoming some conceptual and practical difficulties arising in existing two- phase flow (2PHF) mathematical modelling has been applied to propose a model for dilute 2PHF tu...
The time-dependent liquid film thickness and pressure drop were measured by using parallel -wire conductance probes and capacitance differential-preesure transducers. Applying the eddy viscosity theo...
An analytical potential for cylindrical pores has been derived by introducing a variational method into the integration for the calculation of the interaction energy between the wall molecules and a t...
With the increasing public consciousness on environmental issues, chemical products and process designs require simultaneous satisfaction and compromise of environmental and economical requirements. T...
In this paper, a back propagation artificial neural network (BP-ANN) model is presented for the simultaneous estimation of vapour liquid equilibria (VLE) of four binary systems viz chlorodifluorometha...
Matrix expression of finite orthogonal wavelet transform of finite impulse response signal is more valuable for theoretical analysis and understanding. However, clear deduction for matrix expression...
采用二阶导数阵作为正则化的电容成像图像重建算法
电容成像 采用二阶导数阵
2009/2/20
Tikhonov正则化方法是解决病态逆问题的常用方法，正则化项的引入能改善问题的病态性。利用Laplace算子对正则化项中所包含的图像信息进行锐化处理，可提高电容成像图像重建的质量。仿真结果表明，相对于标准形式的Tikhonov正则化方法，采用正则算子为二阶导数算子的正则化方法图像重建结果边缘及轮廓清晰，对于各种设定流型均具有良好的适应能力，且图像重建结果对初始设定解不敏感，图像重建结果质量更高。...
含非清晰塔的精馏系统综合
精馏 热集成 综合
2009/2/18
对综合问题的求解规模和可行域的变化进行讨论，研究了各种流程的代码表示，问题求解以及最终流程简化。非清晰塔引起相同物流的产生，处理方式有三种：独立，合并，及热偶合。它们引起流程多样性，Petlyuk结构只是其中的一种。采用等价简单塔流程表示复杂流程结构，给出并证明了最大简单塔数与中间分配组份数的关系。最大中间组份数为2 时，将在4N-9（N为组份数）个塔的范围内搜索最优解，超出了N-1个塔的范围。此...
过程系统工程技术与中国石化可持续发展
过程系统工程 中国石化 可持续发展
2009/2/18
石油化工行业是国民经济的重要基础和支柱产业，中国石化集团公司作为中国最大的油品和石化产品生产商及经销商，已步入世界大型能源化工公司行列。过程系统工程（PSE）技术在中国石化结构调整、技术创新、降本增效、节能降耗、环境保护、安全生产、科学决策等诸多方面都起到了重要的作用，有效促进了中国石化科技进步和生产发展。企业资源计划（ERP）系统成功上线；初步形成供应链体系；全面启动总部生产营运指挥系统建设；电...