Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 1500

会议视频 28

会议信息 2

年份

2024 1

2023 60

2022 114

2021 104

2020 76

2019 103

2018 86

2017 83

2016 65

2015 85

2014 80

2013 62

2012 78

2011 71

2010 73

2009 50

2008 72

2007 84

2006 35

2005 24

展开︾

关键词

风险分析 9

能源 7

分析 4

可持续发展 4

对策 4

影响因素 4

数值模拟 4

隧道 4

ANSYS 3

农业科学 3

抗击疫情 3

数值分析 3

环境 3

营养健康 3

裂缝 3

2035年 2

BNLAS 2

COVID-19 2

DX桩 2

展开︾

检索范围：

排序：展示方式：

Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Andreja NEMET, Jiří Jaromír KLEMEŠ, Petar Sabev VARBANOV, Valter MANTELLI

《化学科学与工程前沿（英文）》 2015年第9卷第2期页码 163-182 doi: 10.1007/s11705-015-1520-8

摘要： Heat Integration has been established over the last decades as a proven chemical engineering methodology. Two design implementations are often used in the industry: grassroots and retrofit. Although various methods have been developed for retrofit, it still needs more development to ensure simultaneously thermodynamic feasibility and economic viability. In this paper, a novel graphical approach has been developed to facilitate the understanding of the current situation and scope of improvement. The Retrofit Tracing Grid Diagram presents all streams and heat exchangers in temperature scale and the heat exchangers are clearly separated from each other, enabling clear visualisation of the current state. The tool incorporates the previously developed Cross-Pinch Analysis as well as path approach for retrofit. Additionally, the non-vertical heat transfer can be evaluated. The application of the developed tool has been validated on an oil refinery case study. The applicability of the tool is evident as it can reveal additional options for modification that none of the previous methods considered.

关键词： Heat Integration retrofit Pinch Analysis thermodynamic approach oil refinery

HTML PDF 收藏

快Z-箍缩——有前景的聚变能源新途径

彭先觉,华欣生

《中国工程科学》 2008年第10卷第1期页码 47-53

摘要：

简要介绍了快Z-箍缩的基本概念；综述了快Z-箍缩等离子体研究及其作为高能密度物理与惯性约束聚变（ICF），尤其作为低成本聚变能源研究的最新进展；探讨了快Z-箍缩驱动ICF作为聚变能源可能遇到的技术问题及应用前景。

关键词：快Z-箍缩内爆高能密度物理惯性约束聚变聚变能源

HTML PDF 收藏

三维GIS中地层多比例尖灭自动建模技术

董志

《中国工程科学》 2010年第12卷第2期页码 76-82

摘要：

利用地质勘察数据导入到三维系统中，运用各种三维空间构模方法，自动进行地层推理与连接，生成三维地层模型。以多数据源自动生成模型，可以方便地使地学领域中的地质工作者从繁重的地质信息获取和地质解释手工劳动中解放出来，提高了三维地层建模的速度和构建质量。

关键词：地质三维模型虚拟钻孔多比例尖灭自动建模三角形自分解

HTML PDF 收藏

Automated retrofit targeting of heat exchanger networks

Timothy G. Walmsley, Nathan S. Lal, Petar S. Varbanov, Jiří J. Klemeš

《化学科学与工程前沿（英文）》 2018年第12卷第4期页码 630-642 doi: 10.1007/s11705-018-1747-2

摘要：

The aim of this paper is to develop a novel heat exchanger network (HEN) retrofit method based on a new automated retrofit targeting (ART) algorithm. ART uses the heat surplus-deficit table (HSDT) in combination with the Bridge Retrofit concepts to generate retrofit bridges option, from which a retrofit design may be formulated. The HSDT is a tabular tool that shows potential for improved re-integration of heat source and sink streams within a HEN. Using the HSDT, retrofit bridges—a set of modifications that links a cooler to a heater to save energy—may be identified, quantified, and compared. The novel retrofit method including the ART algorithm has been successfully implemented in Microsoft Excel^TM to enable analysis of large-scale HENs. A refinery case study with 27 streams and 46 existing heat exchangers demonstrated the retrofit method’s potential. For the case study, the ART algorithm found 68903 feasible unique retrofit opportunities with a minimum 400 kW·unit⁻¹ threshold for heat recovery divided by the number of new units. The most promising retrofit project required 3 new heat exchanger units to achieve a heat savings of 4.24 MW with a favorable annualised profit and a reasonable payback period.

关键词： process retrofit pinch analysis heat exchanger network heat recovery

HTML PDF 收藏

直接驱动Z箍缩的FLTD型脉冲功率源的发展

孙凤举,邱爱慈,曾正中,曾江涛,丛培天

《中国工程科学》 2009年第11卷第11期页码 56-63

摘要：

介绍了快直线型变压器（FLTD）脉冲源的技术特点；概述了美国圣地亚国家实验室与俄罗斯强流电子学研究所合作研制的FLTD－Z模块的新进展，基于FLTD拟重复频率运行的针对聚变能源（IFE）应用的原理性样机Z－POP装置，以及下一代惯性约束核聚变（ICF）和IFE用的指标为6 MV,60 MA/90 MA和100 ns FLTD型直接驱动脉冲源的概念设想；初步分析了FLTD直接驱动源需要研究的关键技术。

关键词：快Z箍缩直接驱动 FLTD型脉冲加速器高功率脉冲加速器概念设计

HTML PDF 收藏

两种典型结构强流自箍缩二极管技术研究

杨海亮,邱爱慈,孙剑锋,高屹,苏兆锋,李静雅,孙凤举,梁天学,尹佳辉,丛培天,黄建军,任书庆

《中国工程科学》 2009年第11卷第11期页码 70-78

摘要：

主要介绍了箍缩聚焦二极管和自箍缩离子束二极管的研究进展。重点介绍了近几年发展的阳极杆箍缩聚焦二极管的理论模拟和实验结果，在“闪光二号”加速器和2 MV脉冲功率驱动源上进行了阳极杆箍缩二极管实验，二极管输出电压1.8~2.1 MV,电流40~60 kA,脉宽(FWHM)50~60 ns，1 m处的脉冲X剂量约20~30 mGy，焦斑直径约1 mm，X射线最高能量1.8 MeV。在“闪光二号”加速器上开展了高功率离子束的产生和应用研究，给出了自箍缩反射离子束二极管的结构和工作原理，实验获得的离子束峰值电流~160 kA，离子的峰值能量~500 keV，开展了利用高功率质子束轰击19F靶产生6~7 MeV准单能脉冲γ射线，模拟X射线热—力学效应等应用基础研究。

关键词：阳极杆箍缩二极管离子束二极管 X射线高功率离子束箍缩聚焦

HTML PDF 收藏

脉冲X射线模拟技术的发展

邱爱慈

《中国工程科学》 2000年第2卷第9期页码 24-28

摘要：

文章简要介绍了利用强流脉冲电子束加速器模拟脉冲X射线的发展概况及国内脉冲X射线模拟源的发展现状，指出作为主要技术途径，高功率Z箍缩技术在实现超强脉冲X射线源和ICF驱动源上都有很重要的发展应用前景，并提出了今后工作设想。

关键词：脉冲X射线高功率脉冲技术脉冲电子束加速器 Z箍缩 ICF

HTML PDF 收藏

可控核聚变科学技术前沿问题和进展

高翔,万元熙,丁宁,彭先觉

《中国工程科学》 2018年第20卷第3期页码 25-31 doi: 10.15302/J-SSCAE-2018.03.004

摘要：

可控核聚变能源是未来理想的清洁能源。国际磁约束聚变界近期研究的焦点是国际热核聚变实验堆（ITER）项目。本文介绍了ITER计划的科学目标和工程技术目标中的前沿问题，提出了我国磁约束聚变近期、中期和远期技术目标，制定了中国磁约束聚变发展路线图。在惯性约束聚变（ICF）领域，Z箍缩作为能源更具潜力。美国Sandia国家实验室Z/ZR装置的实验进展显著。我国在Z箍缩辐射源物理和驱动ICF技术路线，尤其是在驱动器与Z箍缩负载能量耦合物理方面开展了大量基础研究。笔者建议我国继续执行ITER国际合作计划，全面掌握聚变实验堆技术；积极推进中国聚变工程试验堆（CFETR）主机关键部件研发、适时启动CFETR项目的全面建设；支持新一代大电流脉冲功率实验平台建设，尽快实现Z箍缩聚变点火，探索Z箍缩驱动惯性约束聚变裂变混合堆。

关键词：国际热核聚变实验堆中国聚变工程实验堆 Z箍缩聚变点火脉冲功率

HTML PDF 收藏

15th International Congress for Stereology and Image Analysis 第十五届国际体视学与图像分析学术会议

会议日期： 2019年05月27日

会议地点：丹麦/奥胡斯

主办单位：国际体视学与图像分析学会(ISSIA)

黄幼麟：Dynamic Consumer Preferences for Electric Vehicles — A Longitudinal Analysis（2020年7月12日）

2022年06月10日

关键词：能源

福田敏男：Bio Cell Analysis and Assembly by Micro and Nano Robotic Technology（2019年8月25日）

福田敏男(院士)

2021年01月20日

关键词：采油工程

Decomposition analysis applied to energy and emissions: A literature review

《工程管理前沿（英文）》页码 625-639 doi: 10.1007/s42524-023-0270-4

摘要： Decomposition analysis has been widely used to assess the determinants of energy and CO₂ emissions in academic research and policy studies. Both the methodology and application of decomposition analysis have been largely improved in the past decades. After more than 50 years’ developments, decomposition studies have become increasingly sophisticated and diversified, and tend to converge internally and integrate with other analytical approaches externally. A good understanding of the literature and state of the art is critical to identify knowledge gaps and formulate future research agenda. To this end, this study presents a literature survey for decomposition analysis applied to energy and emission issues, with a focus on the period of 2016–2021. A review for three individual decomposition techniques is first conducted, followed by a synthesis of emerging trends and features for the decomposition analysis literature as a whole. The findings are expected to direct future research in decomposition analysis.

关键词： index decomposition analysis structural decomposition analysis production decomposition analysis energy CO₂ emissions

HTML PDF 收藏

Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

《能源前沿（英文）》 2016年第10卷第4期页码 424-440 doi: 10.1007/s11708-016-0423-9

摘要： This paper presents the simulation of major mechanical properties of a flux reversal generator (FRG) viz., computational fluid dynamic (CFD), thermal, and vibration. A three-dimensional finite element analysis (FEA) based CFD technique for finding the spread of pressure and air velocity in air regions of the FRG is described. The results of CFD are mainly obtained to fine tune the thermal analysis. Thus, in this focus, a flow analysis assisted thermal analysis is presented to predict the steady state temperature distribution inside FRG. The heat transfer coefficient of all the heat producing inner walls of the machine are evaluated from CFD analysis, which forms the main factor for the prediction of accurate heat distribution. The vibration analysis is illustrated. Major vibration sources such as mechanical, magnetic and applied loads are covered elaborately which consists of a 3D modal analysis to find the natural frequency of FRG, a 3D static stress analysis to predict the deformation of the stator, rotor and shaft for different speeds, and an unbalanced rotor harmonic analysis to find eccentricity of rotor to make sure that the vibration of the rotor is within the acceptable limits. Harmonic analysis such as sine sweep analysis to identify the range of speeds causing high vibrations and steady state vibration at a mode frequency of 1500 Hz is presented. The vibration analysis investigates the vibration of the FRG as a whole, which forms the contribution of this paper in the FRG literature.

关键词： flux reversal generator air velocity computation fluid dynamics thermal analysis vibration analysis finite element analysis

HTML PDF 收藏

Review of sentiment analysis: An emotional product development view

《工程管理前沿（英文）》页码 592-609 doi: 10.1007/s42524-022-0227-z

摘要： Conveying consumers’ specific emotions in new products, referred to as emotional product development or emotional design, is strategically crucial for manufacturers. Given that sentiment analysis (SA) can extract and analyze people’s opinions, sentiments, attitudes, and perceptions regarding different products/services, SA-based emotional design may provide manufacturers with real-time, direct, and rapid decision support. Despite its considerable advancements and numerous survey and review articles, SA is seldom considered in emotional design. This study is among the first efforts to conduct a thorough review of SA from the view of emotional design. The comprehensive review of aspect-level SA reveals the following: 1) All studies focus on extracting product features by mixing technical product features and consumers’ emotional perceptions. Consequently, such studies cannot capture the relationships between technical and emotional attributes and thus cannot convey specific emotions to the new products. 2) Most studies use the English language in SA, but other languages have recently received more interest in SA. Furthermore, after conceptualizing emotion as Kansei and introducing emotional product development and Kansei Engineering, a review of the data-driven emotional design is then conducted. A few efforts start to study emotional design with the help of SA. However, these studies only focus on either analyzing consumers’ preferences on product features or extracting emotional opinions from online reviews, thus cannot realize data-driven emotional product development. Finally, some research opportunities are provided. This study opens a broad door to aspect-level SA and its integration with emotional product development.

关键词： sentiment analysis emotion product development Kansei Engineering

HTML PDF 收藏

Jack up reliability analysis: An overview

Ahmad IDRIS, Indra Sati Hamonangan HARAHAP, Montasir Osman Ahmed ALI

《结构与土木工程前沿（英文）》 2018年第12卷第4期页码 504-514 doi: 10.1007/s11709-017-0443-5

摘要： Jack up is a mobile unit used for oil and gas exploration and production in offshore fields. On demand, the unit is moved and installed in a given location and used for a period up to 12 months before being un-installed and moved to another location. Due to its mobility and re-usability, when the unit is offered for use in a given offshore location, its suitability in terms of safe operation is evaluated in accordance with the guidelines of Site Specific Assessment (SSA) of jack up. When the unit failed safety assessment criteria, the guideline recommended that it is re-assessed by increasing the complexity of the assumptions and methods used. Reliability analysis theories are one of the frameworks recommended for the safety assessment of the units. With recent developments in uncertainty and reliability analysis of structures subject to stochastic excitation, this study aims at providing a review on the past developments in jack up reliability analysis and to identify possible future directions. The results from literature reviewed shows that failure probabilities vary significantly with analysis method used. In addition, from the variants of reliability analysis approach, the method of time dependent reliability for dynamic structures subject to stochastic excitation have not been implemented on jack ups. Consequently, suggestions were made on the areas that need further examination for improvement of the efficiency in safety assessment of the units using reliability theories.

关键词： jack up reliability analysis uncertainty analysis review of jack up