发布求助
文献互助 智能选刊 最新文献

Journal of Advanced Simulation in Science and Engineering最新文献

筛选
英文 中文
Simulating the flow around a train passing through a tornado 模拟穿过龙卷风的火车周围的气流
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2021-01-01 DOI: 10.15748/JASSE.8.12
K. Obara, S. Krajnović, G. Minelli, B. Basara, N. Okura, Masahiro Suzuki
{"title":"Simulating the flow around a train passing through a tornado","authors":"K. Obara, S. Krajnović, G. Minelli, B. Basara, N. Okura, Masahiro Suzuki","doi":"10.15748/JASSE.8.12","DOIUrl":"https://doi.org/10.15748/JASSE.8.12","url":null,"abstract":"A flow simulation was developed to understand the flow surrounding a train that was passing through a tornado and the resulting aerodynamic forces acting on the vehicle. Unsteady Reynolds averaged Navier-Stokes equations were solved to reproduce a previously-conducted laboratory experiment, in which a model train runs through a stationary tornado-like swirling flow. The simulation reproduced the unsteady aerodynamic forces acting on the train reported in the experiment. Furthermore, the computation successfully revealed how the flow field changes as a train passes through a tornado-like swirling flow.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67362036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Performance evaluation of the pixel wing model for the insect wing's camber 昆虫翅膀曲面像素翼模型的性能评价
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2021-01-01 DOI: 10.15748/jasse.8.163
M. Onishi, D. Ishihara
{"title":"Performance evaluation of the pixel wing model for the insect wing's camber","authors":"M. Onishi, D. Ishihara","doi":"10.15748/jasse.8.163","DOIUrl":"https://doi.org/10.15748/jasse.8.163","url":null,"abstract":". In insect flapping wings, the camber deformation is caused by the aerodynamic forces. Since the camber will improve the aerodynamic performance of Flapping Wing Nano Air Vehicles (FWNAVs), it is important to elucidate the passive mechanism of the cambering. The pixel wing model consisting of a structured mesh using shell elements that can simulate the camber deformation caused by the fluid–structure interaction has been proposed for the purpose of computational efficiency. In this study, the performance of the pixel wing model is evaluated as the pixel model resolution is changed. The minimum pixel model resolution is determined such that it can keep enough magnitude of camber compared to actual insects. Fur-thermore, it is found that the cambering of the pixel wing model can be effectively changed using the wing’s chord-wise flexural stiffness given by the root vein pixels and the thickness of the wing membrane pixels.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67362059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Application of Multiple Iso-Surface Rendering to Improvement of Perceived Depth in Transparent Stereoscopic Visualization 多重等面绘制在提高透明立体可视化感知深度中的应用
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2021-01-01 DOI: 10.15748/JASSE.8.128
Daimon Aoi, Kyoko Hasegawa, Liang Li, Yuichi Sakano, Satoshi Tanaka
{"title":"Application of Multiple Iso-Surface Rendering to Improvement of Perceived Depth in Transparent Stereoscopic Visualization","authors":"Daimon Aoi, Kyoko Hasegawa, Liang Li, Yuichi Sakano, Satoshi Tanaka","doi":"10.15748/JASSE.8.128","DOIUrl":"https://doi.org/10.15748/JASSE.8.128","url":null,"abstract":". Three-dimensional data visualization employing the CT and MRI techniques is widely used to understand the complex internal structure of the human body. However, the position and depth information often become unclear when three-dimensional data are rendered transparently. In this study, we aimed to improve the accuracy of the perceived 3D structure by introducing multiple iso-surfaces as a visual guide. For the purpose, we conducted psychophysical experiments. The experimental results suggest that multiple iso-surfaces improve the accuracy of the perceived depth. It was also found that the accuracy of perceived depth changes with the distance between the iso-surfaces.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67362166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation and Evaluation of 28GHz SHF Wave Beamforming with 4×4 Element Configuration Using RF Circuit Phase Control 基于RF电路相位控制的4×4单元组态28GHz SHF波束形成仿真与评价
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2021-01-01 DOI: 10.15748/jasse.8.1
Kazuhiko Tamesue, Zheng Wen, Takuro Sato
{"title":"Simulation and Evaluation of 28GHz SHF Wave Beamforming with 4×4 Element Configuration Using RF Circuit Phase Control","authors":"Kazuhiko Tamesue, Zheng Wen, Takuro Sato","doi":"10.15748/jasse.8.1","DOIUrl":"https://doi.org/10.15748/jasse.8.1","url":null,"abstract":"In the 5th generation mobile communication system (5G), there is a strong demand for higher speed and higher capacity. The beamforming technique using phased-array antennas is effective for long-distance radio propagation and for reducing interference signals in the high SHF (super high frequency) band because the phase shift of the antenna array elements can be controlled to produce a narrow-band beam and to control the directivity. We have developed the 28 GHz array antenna for small cells and evaluated the beamforming characteristics using an RF analog phase shifter control scheme. In this paper, we verify the computer simulation and evaluation results of the beamforming characteristics of a newly developed 4×4 phased array antenna.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Verified Numerical Computations for Searching for Vectors with the Maximum Sum 搜索最大和向量的验证数值计算
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2021-01-01 DOI: 10.15748/JASSE.8.53
Yukiko Uchino, K. Ozaki
{"title":"Verified Numerical Computations for Searching for Vectors with the Maximum Sum","authors":"Yukiko Uchino, K. Ozaki","doi":"10.15748/JASSE.8.53","DOIUrl":"https://doi.org/10.15748/JASSE.8.53","url":null,"abstract":". This study proposes a numerical method for searching for vectors whose sum of all elements is maximum. The vector search can be applied to many scientific problems. If we use numerical computations without considering rounding errors, in a worst-case sce-nario, we might find incorrect vectors as a result. We propose herein an adaptive method designed to work accurately, regardless of the rounding error problems, based on an error-free transformation of a floating-point vector.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67362426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Prediction Method for the Dose Rate of Fuel Debris Depending on the Constituent Elements 基于组成元素的燃料碎片剂量率预测方法
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2021-01-01 DOI: 10.15748/JASSE.8.73
K. Terashima, K. Okumura
{"title":"A Prediction Method for the Dose Rate of Fuel Debris Depending on the Constituent Elements","authors":"K. Terashima, K. Okumura","doi":"10.15748/JASSE.8.73","DOIUrl":"https://doi.org/10.15748/JASSE.8.73","url":null,"abstract":". In 2021, fuel debris samplings are planned to start as part of a step-by-step process at the Fukushima Daiichi nuclear power station. The dose rate of the fuel debris for safety treatments of the fuel debris should be predicted. However, various elements are mixed in the fuel debris, and thus predicting the dose rate will be challenging. Therefore, we conducted a large number of Monte Carlo radiation transport simulations for cases where parameters such as fuel debris size, composition, and density were significantly changed. Consequently, we obtained a simple and analytical formula that can predict the dose rate using a minimum number of parameters.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67362453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A relation of preconditioners for magnetostatic domain decomposition analysis 静磁畴分解分析中的预调节器关系
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2021-01-01 DOI: 10.15748/JASSE.8.27
H. Kanayama, M. Ogino, S. Sugimoto, Kaworu Yodo
{"title":"A relation of preconditioners for magnetostatic domain decomposition analysis","authors":"H. Kanayama, M. Ogino, S. Sugimoto, Kaworu Yodo","doi":"10.15748/JASSE.8.27","DOIUrl":"https://doi.org/10.15748/JASSE.8.27","url":null,"abstract":". A relation of preconditioners of domain decomposition method is shown for numerical analysis of 3-Dimensional (3D) magnetostatic problems taking the magnetic vector potential as an unknown function. The iterative domain decomposition method is combined with the Preconditioned Conjugate Gradient (PCG) procedure and the Hierarchical Domain Decomposition Method (HDDM) which is adopted in parallel computing. Our previously employed preconditioner was the Neumann-Neumann (NN) preconditioner. Numerical results showed that the method was only effective for small number subdomain problems. In this paper, we consider its improvement making use of the Balancing Domain Decomposition DIAGonal scaling (BDD-DIAG) preconditioner and show the asymptotic equivalence between BDD-DIAG and the simplified diagonal scaling (diag) preconditioner, which is derived from the following numerical evidences. Finally, nonlinear processing is also tried for the first time.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parallel 3d shape optimization for cellular composites on large distributed-memory clusters 大型分布式存储簇上蜂窝复合材料的并行三维形状优化
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2020-03-21 DOI: 10.15748/jasse.7.117
J. Pinzon, M. Siebenborn, A. Vogel
{"title":"Parallel 3d shape optimization for cellular composites on large distributed-memory clusters","authors":"J. Pinzon, M. Siebenborn, A. Vogel","doi":"10.15748/jasse.7.117","DOIUrl":"https://doi.org/10.15748/jasse.7.117","url":null,"abstract":"Skin modeling is an ongoing research area that highly benefits from modern parallel algorithms. This article aims at applying shape optimization to compute cell size and arrangement for elastic energy minimization of a cellular composite material model for the upper layer of the human skin. A gradient-penalized shape optimization algorithm is employed and tested on the distributed-memory cluster Hazel Hen, HLRS, Germany. The performance of the algorithm is studied in two benchmark tests. First, cell structures are optimized with respect to purely geometric aspects. The model is then extended such that the composite is optimized to withstand applied deformations. In both settings, the algorithm is investigated in terms of weak and strong scalability. The results for the geometric test reflect Kelvin's conjecture that the optimal space-filling design of cells with minimal surface is given by tetrakaidecahedrons. The PDE-constrained test case is chosen in order to demonstrate the influence of the deformation gradient penalization on fine inter-cellular channels in the composite and its influence on the multigrid convergence. A scaling study is presented for up to 12,288 cores and 3 billion DoFs.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41519261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Low-Profile Wideband Antenna by Loading Oblique Short Elements to Trapezoidal Plate with Capacitance Disk 斜短元件加载到带电容盘的梯形板的低轮廓宽带天线
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2020-01-01 DOI: 10.15748/jasse.7.168
K. Matsubayashi, N. Michishita, H. Morishita
{"title":"Low-Profile Wideband Antenna by Loading Oblique Short Elements to Trapezoidal Plate with Capacitance Disk","authors":"K. Matsubayashi, N. Michishita, H. Morishita","doi":"10.15748/jasse.7.168","DOIUrl":"https://doi.org/10.15748/jasse.7.168","url":null,"abstract":". This paper proposes a low-profile wideband antenna composed of a capacitance disk, trapezoidal plate, and four oblique short elements. The characteristics of the proposed antenna are analyzed through simulation. The results demonstrate that the proposed antenna offers a low-profile and wideband performance. In addition, its radiation patterns are omnidirectional in horizontal plane. This antenna is prototyped, and the validity of the simulation is verified through measurements.","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67360348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Special Section on Recent Advances in Simulation in Science and Engineering – Post-conference proceedings for JSST2019 – 科学与工程模拟的最新进展专题部分- JSST2019会议纪要
IF 0.5
Journal of Advanced Simulation in Science and Engineering Pub Date : 2020-01-01 DOI: 10.15748/jasse.7.i
Susumu Fujiwara
{"title":"Special Section on Recent Advances in Simulation in Science and Engineering – Post-conference proceedings for JSST2019 –","authors":"Susumu Fujiwara","doi":"10.15748/jasse.7.i","DOIUrl":"https://doi.org/10.15748/jasse.7.i","url":null,"abstract":"","PeriodicalId":41942,"journal":{"name":"Journal of Advanced Simulation in Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信