国际石油合作勘探开发项目经济评价的模型研究

阐述了国际石油合作勘探开发项目经济评价的全过程，并提出每一阶段的评价模型，针对国际石油合作勘探开发的具体特点提出了建立经济评价总体评估模型的步骤及评价模型。     

焦炉火道平均温度的优化控制

提出了以降低能耗，保证焦炭质量和产量为目标的焦炉优化控制，并研究和开发了焦炉装置的递阶优化控制策略，建立了以焦炉总体数学模型和基于人工神经网络的优化逆模型为基础的模型预报和滚动优化的焦炉预测模型。     

熔盐体系表面张力的分子关联模型

将Ｒｅｉｓ提出的硬球表面张力模型用于计算纯熔盐和混合熔盐体系的表面张力将硬球直径视为温度的函数，对２３个纯熔盐体系的表面张力进行了关联，得到相应的分子参数，表面张力的关联总体平均偏差为０４８％应用ｖａｎｄｅｒＷａａｌｓ理论－１混合规则，将Ｒｅｉｓ的表面张力模型推广到混合熔盐体系，对２７个二元熔盐混合体系的表面张力进行了预测和关联，总体平均偏差分别为３３８％和１０４％，其结果能满足工业应用的需要     

油气田企业科技进步作用的定量研究：长庆石油勘探局科技进步作用的实证…

本文在研究，比选国内外大量测算科技进步作用模型的基础上，针对石油行业的特点和现状，提出了石油企业进行科技进步核算的总体思路和核算方案，并且，在对长庆油田科技进步作用进行实证测算分析的基础上，了“科技含量”的概念且给出了量化的定义，并用灰色系统理论建立了测算的模型和方法。     

基于DEA模型的氯碱企业成本效率分析

利用数据包络分析（简称DEA）模型，分析了江苏省11家氯碱企业生产投入与产出在总体效率，技术效率方面的差异．从而得出不同企业在各生产投入要素方面的调整建议。     

气泡曳力系数模型分区研究

由曳力系数表征的曳力模型作为重要的相间力模型之一，被广泛应用于Euler-Euler方法和Euler-Lagrange方法下的连续相和离散相动量方程中。由于现有气泡曳力系数模型形式各异且适用范围有限，因此需要对已有模型进行充分地评价。考虑到已有曳力系数模型的适用范围和气泡变形的影响，参考各曳力系数模型采用的相关参数，建议基于Reynolds数Re和Weber数We分区选择最佳模型。将分区曳力系数模型、已有曳力模型与实验数据对比，发现分区曳力系数模型总体预测结果更符合实验测量值。将分区曳力系数模型应用至数值模拟中，可以更精确地追踪不同尺寸气泡的位置，使数值模拟结果更接近真实的物理情况。     

春笋微波干燥动力学模型研究

在不同微波功率下研究春笋（5mm厚度，200g）干燥过程中失水速率和颜色的变化规律。失水速率随微波功率增大而增大，用拟和性较好的Page方程建立了水分比变化模型。色泽变化参数用亮度L、红色度a和黄色度b表示。红色度a值和黄色度b值上升而亮度L下降，笋片微波干燥后总体色泽加深。色泽各参数变化用食品中零级和一级反应模型来拟和，其中L和b的变化适合一级反应模型，a的变化适合用零级反应模型表达。     

国际石油合作勘探开发项目经济评价的模型研究

阐述了国际石油合作勘探开发项目经济评价的全过程,并提出每一阶段的评价模型,针对国际石油合作勘探开发的具体特点提出了建立经济评价总体评估模型的步骤及评价模型.     

短纤维增强SiC／Al复合材料在高温下粘弹性拉伸性能的细观力学分析

本文采用细观力学模型和有限元法研究短纤维增强ＳｉＣ／Ａｌ复合材料在高温下的粘弹性行为，着重讨论了纤维体分比和长径比对复合材料总体蠕变性能的影响。结果表明，随着纤维体分比和长径比的增加，纤维能显著抑制复合材料沿轴向蠕变行为。     

橡胶注射过程中压力变化的研究

对橡胶注射过程中的压力变化进行了理论与实验研究。充模流动模型的压力、能量控制方程分别为：选用高斯方法求解总体有限元方程。实验与计算分析对比证明．本文选用的数学模型和计算方法所得结果与实测结果基本吻合、该模型可用以代替大量的实验，对橡胶充模过程进行模拟，并用Ｇｒａｐｈｅｒ软件对数值结果进行处理，以图表直观地表达出各种因素对充模过程的影响。     

国际EPC水泥工程总承包项目设计审批 影响因素分析

EPC工程总承包模式以其综合效益及资源配置等多方面的明显优势逐渐发展成为当前国际工程市场上流行的一种总承包模式。在EPC总承包项目中设计审批就是新出现的设计管理内容,文章介绍了水泥EPC总包项目的设计审批及其阶段和内容,详细介绍了施工图设计阶段的设计审批主要出现的影响设计审批的因素。     

基于层次-灰色关联分析的总图设计方案评价

分析总图设计方案比选的重要意义,建立总图设计方案评价指标体系.在此基础上介绍层次-灰色关联分析法的基本原理和评价步骤,并以两个总图方案的比选为例,运用该模型进行灰色关联分析,得出评价结论,从而证实模型的可行性和有效性.     

Optimal Simultaneous Design and Operational Planning of Vegetable Extraction Processes

A general multiperiod linear optimization model is proposed in this study that targets the simultaneous design and operation planning decisions of a multiproduct batch plant for the production of vegetable extracts. A multiperiod environment is considered because of the market and/or seasonal fluctuations. Thereby, the model considers changes from period to period of demands, costs, prices and raw materials supplies. The objective function maximizes the net present value of the profit considering incomes, investments and resources costs, and both product and raw material inventory costs. In the plant design problem, the sequence of operations is already defined and the pursued goal is to determine both unit sizes and its configuration in the plant. Besides the usual duplication in parallel option, a novel design alternative is included which allows adding units in series to perform a given operation. The optimal design is determined by taking into account available discrete sizes of units which corresponds to the real procurement of equipments. The model is formulated by using the linear generalized disjunctive programming (LGDP). A particular plant that produces oleoresins (solvent extracts of herbs and spices) is used to illustrate the proposed approach. Nevertheless, the developed model is general and can thus be applied to any vegetable extraction process.     

The application of simulation vessel flow studies to an industrial chemical reactor mixing problem

A general technique for treating industrial chemical reactor mixing problems is presented. This technique involves mathematical analysis to predict reactor performance in terms of the parameters of a realistic flow model. The variables of the system model are then coupled with the parameters of agitator design and operation through a simulation vessel mixing study. In this way, reactor performance can be expressed in terms of agitator design. The application of this approach to the solution of an industrial chemical reactor design problem is discussed.     

Modelling and explicit model predictive control for PEM fuel cell systems

We present an analytical dynamic model and a general framework for the optima control design of a PEM fuel cell system. The mathematical model consists of a detailed model for the PEM fuel cell stack and simplified models for the compressor, humidifier and cooling system. The framework features (i) a detailed dynamic process model, (ii) a reduced order approximating model obtained by performing dynamic simulations of the system and (iii) the design of an explicit/multi-parametric model predictive controller. The derived explicit/multi-parametric controller is tested and validated off-line on several operating conditions.     

石化企业蒸汽动力系统优化设计建模及应用

在石化企业蒸汽动力系统(SPS)热力学分析与数学规划集成优化策略的指导下,建立了多周期设计与运行协同优化的混合整数线性规划模型(MILP)。通过热力学效率、电热供应比2个指标筛选组合子系统,采用设计负荷离散化的方法确定SPS初始超结构,大大降低了优化设计问题模型的规模和复杂度。案例分析部分采用提出的优化设计方法和建模求解策略,得到了最优设计和运行方案,同传统设计方法相比,模型求解时间大大降低,方案可操作性大大提高,证实了文中提出的优化设计策略、筛选规则和优化设计模型的可行性和有效性。     

TCS-S热偶精馏过程的优化设计

建立了TCS－S热偶精馏过程优化设计的数学模型，给出非精晰分割精馏塔最小回流比的求解方法，并给出简捷计算和严格计算的求解过程，编制了计算机程序。用苯－甲苯－乙苯物系为例进行考核计算，与普通塔的两个分离序列进行比较，节能效果十分显著。     

松节油固有危险程度的安全设施设计及评价

依据国家安监总局发布的《安全设施设计专篇编制导则》要求,运用池火灾、爆炸伤害事故模型,定量分析林产化工企业中储存松节油的固有危险程度,作为化工安全设施设计的重要依据,根据计算结果及相关设计标准,从总平面图布置、建构筑物、管线设备、消防设施、电力装置及防雷防静电等方面对松节油罐区提出可行的安全设施设计对策措施,并采用道化学(DOW)火灾、爆炸危险指数法对设计的有效性进行了评价。     

Intermediate storage in batch/continuous processing systems under stochastic operation conditions

A mathematical model and model-based method is presented to design the intermediate storages aiming to buffer the operational differences between the batch and continuous subsystems in processing systems. The occurrence times of the inputs are assumed to be described by a Poisson process, while the amounts of the material transferred by the batch units allowed changing according to general probability distributions. Based on the stochastic differential equation model of operation, integral equations for determining the overflow and underflow probabilities of a finite storage are formulated for both infinite and finite operation horizons that provide the basis for the rational design of such intermediate storages. Analytical solutions to the integral equations for infinite horizons are derived in the cases of constant and exponentially distributed inputs. For the batch sizes described by general distribution functions, solutions to the integral equations are obtained in the form of approximating functions generated by stochastic simulation. A number of numerical experiments with exponential, normal and lognormal distributions of the batch sizes are presented and analyzed. The effects of process parameters on the design are also investigated.     

Electrically conducting carbon composites: systems design and information modeling

General systems theory is used to break down electrically conducting carbon composites (ECCs) and gas-diffusion substrates (GDTs) in fuel cells as objects for systems design. An information model is proposed for systems design and several general laws are discovered to describe the development ECCs and GDTs as part of their complete lifecycle. Methods are found to optimize systems design technology. Systems design and information modeling are shown to be effective tools for the development of ECCs, including nanocomposites with pre-assigned properties.