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A new model without any fitting parameter for estimating the mean liquid recirculating velocity has been derived from previous work directly. The prediction agrees with experimental data reasonably ...
一氧化碳偶联反应器分岔行为
一氧化碳耦合反应器 分歧行为 稳定性 动力学
2009/2/24
The bifurcation behavior of the CO coupling reactor was examined based on the one-dimensional pseudohomogeneous axial dispersion dynamic model. The method of finite difference was used for solving the...
一种改进的动态数据校正离群值检测法
动态数据 校正方法 离群值检测法 鲁棒方法
2009/2/24
Data reconciliation technology can decrease the level of corruption of process data due to measurement noise, but the presence of outliers caused by process peaks or unmeasured disturbances will smear...
一种基于改进NLJ算法的对象辨识方法及其应用
new Luus-Jaakola (NLJ) internal model control proportional-integral-derivative (PID) model identification
2009/2/24
The accurate model is the most important and basic condition for the application of advanced process control, but the conventional methods do not provide satisfactory results in the case of unstable ...
一种新的模糊聚类-分级算法及其在流程报警管理中的应用
流程报警管理 模糊聚类-分级算法 化学反应
2009/2/24
Overmany alarms of modern chemical process give the operators many difficulties to decision and diagnosis. In order to ensure safe production and process operating, management and optimization of alar...
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...