检索结果-内蒙古大学图书馆

Development of 3D Finite Element code of Incompatible Displacement Mode for Flexural Analysis

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2014年第8期39卷 6009-6016页

作者： Alwathaf, Ahmed Hasan Sanaa Univ Fac Engn Dept Civil Engn Sanaa Yemen

For three-dimensional finite element modeling, it is necessary to use a solid element taking into account the flexural response and also should be simple for computer storage. One of the elements that can attain the previous requirements is the incompatible (non-conforming) element. In this paper, formulation and algorithm of the developed 3D finite element code of incompatible displacement mode for flexural analysis are presented using 3D 8-noded isoparametric incompatible brick element. Several comparisons and a parametric study have been carried out to verify the incompatible brick element and the developed code. Accurate results have been obtained by the 3D incompatible element in flexural analysis of beams in comparison with the standard element.

关键词： 3D finite element Incompatible displacement mode computer code Algorithm Flexural analysis Stiffness

来源：评论

学校读者我要写书评

暂无评论

An Implicit Numerical Method for Integration of the Conservation Equations Incorporated into the KORSAR code Two-Fluid Model

引用

THERMAL ENGINEERING 2024年第4期71卷 301-308页

作者： Yudov, Yu. V. Danilov, I. G. Aleksandrov Res Technol Inst Sosnovyi Bor 188450 Russia

A noniterative implicit method for solving the discrete conservation equations of the KORSAR/GP computer code (hereinafter referred to as KORSAR) two-fluid model is presented. The KORSAR/GP code has been developed jointly by specialists of the Federal State Unitary Enterprise Aleksandrov Research Institute of Technology (NITI) and the special design bureau OKB Gidropress. In 2009, the code was certified at the Federal Service for Environmental, Technological, and Nuclear Supervision (Rostekhnadzor) as applied to numerical safety assessment of VVER-type power reactor plants. The code uses the semi-implicit numerical scheme, which limits the integration time step by the Courant condition with respect to the velocity of a two-phase flow. To cut down the time it takes to calculate prolonged transients in reactor plants, an implicit numerical method, which does not limit the time step by the Courant condition, has been developed on the basis of the SETS (stability-enhancing two-step) method. It is based on the semi-implicit scheme. Prior to its application, discrete phase momentum conservation equations with the convective terms written in implicit form are solved at each time step. After the semi-implicit step, the specific (per unit volume) mass and energy of the phases, which are donor quantities in the convective terms of the transport equations, are calculated at the new time layer. Unlike the SETS method, the implicit method developed for the KORSAR code employs a semi-implicit scheme with linearization of unsteady terms describing the change in the specific mass and energy of a two-phase flow. This approach enables us to solve discrete equations in a noniterative manner. However, the implementation of this procedure requires that the unknown scalar variables, such as the phase specific enthalpies, the vapor volume fraction, and the pressure, be determined in the computational cells. Therefore, the semi-implicit scheme with linearization of unsteady terms with reca

关键词： interfacial heat and mass transfer two-fluid model donor quantities semi-implicit scheme implicit method computer code Courant condition unsteady terms time layer

来源：评论

学校读者我要写书评

暂无评论

The Aesthetics of Software code: A Quantitative Exploration

引用

PSYCHOLOGY OF AESTHETICS CREATIVITY AND THE ARTS 2012年第1期6卷 57-65页

作者： Kozbelt, Aaron Dexter, Scott Dolese, Melissa Seidel, Angelika CUNY Brooklyn Coll Dept Psychol Brooklyn NY 11210 USA CUNY Grad Ctr New York NY 10021 USA CUNY Brooklyn Coll Dept Comp & Informat Sci Brooklyn NY 11210 USA

While research linking science and aesthetics continues to proliferate, in technical domains like software development, quantitative investigations of aesthetics are virtually nonexistent. As an initial exploration, we administered an online survey to 12 experts and 38 novices in programming, assessing the frequency, nature, time course, and judgment criteria of their aesthetic experience with software code. Both groups reported having aesthetic experiences with code, though somewhat less frequently and intensely than with other creative artifacts. Overall, judgments of "ugly" code were reported to be faster than those of "beautiful" code, which in turn were faster than those of "correct" code. Aesthetic considerations of code were generally rated as quite important, though not as important as functionality. Finally, aesthetic judgment criteria were highly correlated among experts and novices. Results suggest a quantitative approach to aesthetics in software code is a promising direction, with trans-domain implications for aesthetics and creativity.

关键词： aesthetics computer code expertise aesthetic judgment aesthetic experience

来源：评论

学校读者我要写书评

暂无评论

Active emulation of computer codes with Gaussian processes Application to remote sensing

引用

PATTERN RECOGNITION 2020年 100卷 107103-107103页

作者： Heestermans Svendsen, Daniel Martino, Luca Camps-Valls, Gustau Univ Valencia Image Proc Lab IPL C Cat Jose Beltran 2 Paterna 46980 Spain Univ Rey Juan Carlos URJC Dept Signal Proc Camino Molino 5 Fuenlabrada 28943 Spain

Many fields of science and engineering rely on running simulations with complex and computationally expensive models to understand the involved processes in the system of interest. Nevertheless, the high cost involved hamper reliable and exhaustive simulations. Very often such codes incorporate heuristics that ironically make them less tractable and transparent. This paper introduces an active learning methodology for adaptively constructing surrogate models, i.e. emulators, of such costly computer codes in a multi-output setting. The proposed technique is sequential and adaptive, and is based on the optimization of a suitable acquisition function. It aims to achieve accurate approximations, model tractability, as well as compact and expressive simulated datasets. In order to achieve this, the proposed Active Multi-Output Gaussian Process Emulator (AMOGAPE) combines the predictive capacity of Gaussian Processes (GPs) with the design of an acquisition function that favors sampling in low density and fluctuating regions of the approximation functions. Comparing different acquisition functions, we illustrate the promising performance of the method for the construction of emulators with toy examples, as well as for a widely used remote sensing transfer code. (C) 2019 Elsevier Ltd. All rights reserved.

关键词： Active learning Gaussian process Emulation Design of experiments computer code Remote sensing Radiative transfer model

来源：评论

学校读者我要写书评

暂无评论

The development of TRIAC-BATAN: a triso fuel performance analysis code 1

The development of TRIAC-BATAN: a triso fuel performance ana...

引用

1st Symposium of Emerging Nuclear Technology and Engineering Novelty (SENTEN) - Discovering Science and Engineering Novelty for Improving Human Life Prosperity

作者： Waskita, A. A. Setiadipura, T. Natl Nucl Energy Agcy BATAN Ctr Nucl Reactor Technol & Safety Kawasan Puspiptek Serpon 15310 Tangerang Indonesia

A computer code for analyzing the safety feature of triso coated particles for high temperature reactor has been developed based on PANAMA code. This python based code were separated into several modules to perform the main TRIAC-BATAN and linear interpolation calculation, to read the input data file, and to control the sequence of all TRIAC-BATAN calculation. In this initial development phase, TRIAC-BATAN can produce similar pattern as PANAMA calculation in the case of failure fraction of triso particles, either for Depressurized Loss Of Forced Cooling (DLOFC), 100 degrees C higher than DLOFC temperature and constant accident temperature at 1600 degrees C. By using the euclidean distance, TRIAC-BATAN calculation and PANAMA for DLOFC condition are separated in around 3.23.10(-7).

关键词： computer code fuel performance triso coated particles

来源：评论

学校读者我要写书评

暂无评论

Recent updates in the "Synchrotron Radiation Workshop" code, on-going developments, simulation activities, and plans for the future 3

Recent updates in the "Synchrotron Radiation Workshop" code,...

引用

Conference on Advances in Computational Methods for X-Ray Optics III

作者： Chubar, Oleg Brookhaven Natl Lab Photon Sci Directorate Upton NY 11973 USA

ISBN: (纸本)9781628412369

Recent updates in the "Synchrotron Radiation Workshop" physical optics computer code, including the transition to the Open Source development format, the results of the on-going collaborative development efforts in the area of X-ray optics, in particular grazing incidence mirrors, gratings and crystal monochromators, and in other areas, as well as some simulation activities for storage ring and X-ray free-electron laser sources are reported. Future development plans are discussed.

关键词： physical optics synchrotron radiation partial coherence X-rays light sources computer code

来源：评论

学校读者我要写书评

暂无评论

THE FATDAC code FOR FATIGUE DATABASE ANALYSIS

THE FATDAC CODE FOR FATIGUE DATABASE ANALYSIS

引用

SYMP ON THE computerIZATION AND USE OF MATERIALS PROPERTY DATA

作者： ANDREW, SP EASON, ED WARMBRODT, SB Failure Analysis Associates Inc. P.O Box 3015 Menlo Park 94025 CA United States Modeling and Computing Services 39675 Cedar Blvd. Newark 94560 CA United States

ISBN: (纸本)0803114370

The FATDAC code, an interactive, modular, menu-driven computer program was developed to interface directly with a database for the analysis of fatigue and corrosion fatigue data. The code provides a variety of analysis techniques to solve problems inherent in fatigue databases. The solutions include: (1) an optimization process which minimizes the numerical scatter in da/dN that arises from differentiation of (a,N) data, (2) a feature for combining data from many investigators while taking into account the varying amount of crack extension or life represented by each point, and (3) weighted least squares techniques for fitting standard or user-defined models to (da/dN,ΔK). © 1992 ASTM International. All rights reserved.

关键词： FATIGUE DATABASE OPTIMIZATION MODELING SCATTER computer code

来源：评论

学校读者我要写书评

暂无评论

The IRAC code system to calculate activation and transmutation in the TIARA facility

引用

Journal of Nuclear Science and Technology 2000年第Sup1期37卷 840-844页

作者： Tanaka, Susumu Fukuda, Mitsuhiro Nishimura, Koichi Hosono, Masakazu Watanabe, Hiromasa Yamano, Naoki Japan Atomic Energy Research Ins tilute Gunma 370-1292 1233 Watanuki Takasaki Japan SumitomoAtomic Energy Industries Ltd. Tokyo 130-0026 2-10-14 Ryogokll Sumida-kll Japan

A computer code system IRAC has been updated to calculate nuclide transmutation and induced radioactivity for incident particles of neutron, proton, deuteron, alpha up to 150 MeV, and ^l2C, ^l4N, ^l6O,²⁰Ne, ⁴⁰Ar up to 500 MeV in arbitrary multi-layer target system of three-dimensional geometry. The system provides four libraries that consist of ACSELA for isotope production cross-sections, DECAYLIB for decay data, GAMMALIB for photon emission data, and MASWPS for atomic mass data. Features and the system performance have been presented. To validate accuracy of the code system, radioactivities of residual isotopes for incident 260-MeV ²⁰Ne ions on cobalt target were measured by using gamma-spectrometry. Comparison of radioactivity has been shown between calculated results and experimental data for each cooling time. © 2014 Atomic Energy Society of Japan. All rights reserved.

关键词： Accelerator Facility Activation Cobalt computer code Induced Radioactivity Ions IRAC code System Isotope Production Neon Neutrons Transmutation Validation

来源：评论

学校读者我要写书评

暂无评论

Water reactor fuel performance code profess and its application for predicting the behaviour of the fuel elements of D-Com blind problem

引用

Bulletin of Materials Science 1986年第2期8卷 253-263页

作者： Sah, D.N. Venkatesh, D. Ramadasan, E. Radiometallurgy Division Bhabha Atomic Research Centre Trombay Bombay 400 085 India

This paper gives a brief description of the sub-models of important phenomena treated in computer code profess and presents some results of profess calculations for the fuel elements of D-Com blind problem. © 198... 详细信息

关键词： code verification computer code computer modelling fuel performance irradiation behaviour irradiation effects nuclear fuel element water reactor

来源：评论

学校读者我要写书评

暂无评论

Numerical simulation for space charge dominated beam transport

引用

Chinese Physics B 2010年第3期19卷 245-250页

作者：吕建钦 State Key Laboratory of Nuclear Physics and Technology Peking University

To simulate the intense bunched beam transport, a computer program LEADS-3D has been developed. The particle trajectories are analysed with the Lie algebraic method. The third order approximation of the trajectory solutions is made with space charge forces off, and the second order approximation is made with space charge forces on. The particle distribution in the 3D ellipsoid is uniform or Gaussian. Most of the conventional beam optical elements are incorporated in the code. The optimization procedures are provided to fit the beam lines to satisfy the given optical conditions.

关键词： computer code beam dynamics intense bunched beam nonlinear

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：