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International Journal for Uncertainty Quantification最新文献

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GLOBAL SENSITIVITY ANALYSIS MEASURES BASED ON STATISTICAL DISTANCES 全局敏感性分析基于统计距离度量
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/int.j.uncertaintyquantification.2021035424
S. Nandi, T. Singh
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引用次数: 2
Field Sensitivity Analysis of Turbulence Model Parameters for Flow Over a Wing 机翼气流湍流模型参数的场灵敏度分析
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/int.j.uncertaintyquantification.2021036467
J. Quick, R. King, M. T. Henry de Frahan, S. Ananthan, M. Sprague, P. Hamlington
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引用次数: 0
LOCALIZED STOCHASTIC GALERKIN METHODS FOR HELMHOLTZ PROBLEMS CLOSE TO RESONANCE 接近共振亥姆霍兹问题的局域随机伽辽金方法
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/INT.J.UNCERTAINTYQUANTIFICATION.2021034247
Guanjie Wang, Fei Xue, Qifeng Liao
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引用次数: 3
Methods for approximating distribution of unknown parameters estimates with application in material thermophysics 未知参数估计分布的近似方法及其在材料热物理中的应用
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/INT.J.UNCERTAINTYQUANTIFICATION.2021033482
D. Jarušková, A. Pázman
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引用次数: 0
DEALING WITH INCONSISTENT MEASUREMENTS IN INVERSE PROBLEMS: SET-BASED APPROACH 反问题中不一致测量的处理:基于集合的方法
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/INT.J.UNCERTAINTYQUANTIFICATION.2021035536
Krushna Shinde, P. Feissel, Sébastien Destercke
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引用次数: 2
HISTORY MATCHING WITH SUBSET SIMULATION 历史匹配与子集仿真
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/int.j.uncertaintyquantification.2021033543
Z. Gong, F. DiazDelaO, P. O. Hristov, M. Beer
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引用次数: 2
APPLICATION OF THE λ NEUMANN-MONTE CARLO METHODOLOGY FOR QUANTIFICATION OF THE UNCERTAINTY OF THE PROBLEM OF STOCHASTIC BENDING OF KIRCHHOFF PLATES 应用λ诺伊曼-蒙特卡罗方法量化基尔霍夫板随机弯曲问题的不确定性
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/int.j.uncertaintyquantification.2020034192
C. R. D. Silva, Roberto M. F. Squarcio, J. L. Cavichiolo, João Morais da Neto
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引用次数: 0
LOCAL VORONOI TESSELLATIONS FOR ROBUST MULTIWAVE CALIBRATION OF COMPUTER MODELS 计算机模型鲁棒多波校准的局部voronoi镶嵌
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/INT.J.UNCERTAINTYQUANTIFICATION.2021034779
Wenzhe Xu, D. Williamson, P. Challenor
{"title":"LOCAL VORONOI TESSELLATIONS FOR ROBUST MULTIWAVE CALIBRATION OF COMPUTER MODELS","authors":"Wenzhe Xu, D. Williamson, P. Challenor","doi":"10.1615/INT.J.UNCERTAINTYQUANTIFICATION.2021034779","DOIUrl":"https://doi.org/10.1615/INT.J.UNCERTAINTYQUANTIFICATION.2021034779","url":null,"abstract":"","PeriodicalId":48814,"journal":{"name":"International Journal for Uncertainty Quantification","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67531059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scalable Gaussian Process Analysis for Implicit Physics-Based Covariance Models 隐式物理协方差模型的可扩展高斯过程分析
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/INT.J.UNCERTAINTYQUANTIFICATION.2021036657
Yian Chen, M. Anitescu
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引用次数: 5
Closure Law Model Uncertainty Quantification 闭合律模型不确定性量化
IF 1.7 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2021-01-01 DOI: 10.1615/int.j.uncertaintyquantification.2021037714
A. Strand, J. Kjølaas, T. Bergstrøm, I. Steinsland, L. Hellevik
The prediction uncertainty in simulators for industrial processes is due to uncertainties in the input variables and uncertainties in specification of the models, in particular the closure laws. In this work, the uncertainty in each closure law was modeled as a random variable and the parameters of its distribution were optimized to correctly quantify the uncertainty in predictions. We have developed two methods for optimization, based on the integrated quadratic distance and the energy score. The proposed methods were applied to the commercial multiphase flow simulator LedaFlow with the liquid volume fraction and pressure gradient as output variables. Two datasets were analyzed. Both describe two-phase gas-liquid flow, but are otherwise fundamentally different. One is gas-dominated stratified/annular flow and the other is liquiddominated slug flow. The closure law for the gas-wall friction factor is decisive for the gas-dominated predictions, and the estimated relative standard deviation is 4.5% or 8.0% depending on method. The liquid-dominated study showed that the liquid-wall friction factor and the slug bubble velocity are the closure laws with the greatest impact. Moreover, the estimated relative standard deviation in the liquid-wall friction factor is 5%, and the deviation in the slug bubble velocity is 4%. We used direct measurements of the slug bubble velocity to validate the estimated uncertainty.
工业过程仿真器预测的不确定性是由于输入变量的不确定性和模型规格的不确定性,特别是闭合律的不确定性。在这项工作中,将每个封闭律中的不确定性建模为一个随机变量,并优化其分布参数,以正确量化预测中的不确定性。我们开发了两种优化方法,基于积分二次距离和能量评分。以液体体积分数和压力梯度为输出变量,将该方法应用于商用多相流模拟器LedaFlow。分析了两个数据集。两者都描述两相气液流动,但在其他方面有根本不同。一种是以气体为主的分层/环空流动,另一种是以液体为主的段塞流。气壁摩擦系数的闭合规律对于以气体为主导的预测具有决定性作用,根据不同的方法,估计的相对标准偏差为4.5%或8.0%。以液体为主导的研究表明,液壁摩擦系数和段塞流泡速度是影响最大的闭合规律。估计液壁摩擦系数的相对标准偏差为5%,段塞流泡速度的相对标准偏差为4%。我们使用直接测量段塞流气泡速度来验证估计的不确定度。
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引用次数: 0
期刊
International Journal for Uncertainty Quantification
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