Results 71 to 80 of about 1,471,642 (284)

A Novel Fractal Multi-band Frequency Selective Surface

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, a new multiband fractal frequency selective surface (MF-FSS) is proposed. The work presents a new fractal design methodology for FSSs with Swastika fractal patch elements.
Mahmoud Fallah, Amir Hossein Nazeri, Mohammad Reza Azadkhah   +2 more
doaj   +1 more source

Numerical Simulation of the Nonlinear Flow Properties in Self-Affine Aperture-Based Fractures

Advances in Civil Engineering, 2021
In order to study the effect of fracture geometry on the nonlinear flow properties in aperture-based fractures, a fractal model based on the self-affinity is proposed to characterize the three-dimensional geometry of rough-walled fractures.
Xin Zhou, Jianlong Sheng, Ruili Lu, Zuyang Ye, Wang Luo   +4 more
doaj   +1 more source

A transmission problem across a fractal self-similar interface

, 2016
We consider a transmission problem in which the interior domain has infinitely ramified structures. Transmission between the interior and exterior domains occurs only at the fractal component of the interface between the interior and exterior domains. We
Achdou Y., Calderón A.-P., Capitanelli R., Capitanelli R., Jonsson A., Kinnunen J., Mosco U., Mosco U., S. K., Thibaut Deheuvels, Yves Achdou   +10 more
core   +3 more sources

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

Estimating the Permeability of Carbonate Rocks from the Fractal Properties of Moldic Pores using the Kozeny-Carman Equation [PDF]

Research Ideas and Outcomes, 2018
Reservoir modeling of carbonate rocks requires a proper understanding of the pore space distribution and its relationship to permeability. Using a pigeonhole fractal model we characterize the fractal geometry of moldic pore spaces and extract the fractal
Adewale Amosu, Hamdi Mahmood, Paul Ofoche   +2 more
doaj   +2 more sources

APPLICATION OF FRACTAL GEOMETRY IN EVALUATION OF EFFECTIVE STIMULATED RESERVOIR VOLUME IN SHALE GAS RESERVOIRS

, 2017
According to hydraulic-fracturing practices conducted in shale reservoirs, effective stimulated reservoir volume (ESRV) significantly affects the production of hydraulic fractured well.
Guanglong Sheng, Yuliang Su, Wendong Wang, F. Javadpour, M. Tang   +4 more
semanticscholar   +1 more source

Sub‐Unit‐Cell Logic Governs Transport in TPMS Architectures

Advanced Science, EarlyView.
ABSTRACT Next‐generation energy, thermal, and chemical systems require architectures capable of highly efficient transport across multiple length scales. Triply periodic minimal surfaces (TPMS), first conceptualized in 1865, offer inherently scalable geometries with exceptional transport potential, yet mechanistic links between topology and performance
Haozhang Zhong, Yipei He, Jiaxuan Wang, Chenyi Qian, Gerd E Schröder‐Turk, Raj Das, Junye Shi, Qi Tang, Zheda Ning, Wenjue Yi, Chuanwei Li, Jiangping Chen, Zeyao Chen, Binbin Yu, Jian LU, Jianfeng Gu, Ma Qian   +16 more
wiley   +1 more source

An Interface Design for Calculation of Fractal Dimension

Chaos Theory and Applications, 2020
Partially insufficient is the modelling of irregular and complex forms using Euclidean geometry. On the other hand, fractal geometry allows irregular complex forms and structures to be expressed in mathematical terms. While fractal geometry appears to be
Mustafa Zahid Yıldız, Ömer Faruk Boyraz, İhsan Pehlivan, Ali Fuat Boz, Zeynep Garip, Murat Erhan Çimen   +5 more
doaj  

Design of Microstrip Antenna Using Fractal Geometry and Metamaterial

Diyala Journal of Engineering Sciences, 2015
The performance improvement which was achieved in rectangular patch antenna was made by the use of fractal geometry and Left-Handed Metamaterial (LHM). The two types of fractal geometry used are 1st iteration of Minkoweski and Koch separately, while the
Waleed K. Abd, Muneer A. Hashem, Israa H. Ali   +2 more
doaj   +1 more source

Bioinspired Hierarchical Architecture with Water Transport Channels for Strong Adhesion at the Sweating Interface

Advanced Science, EarlyView.
To address adhesion failure in sweaty epidermal electronics, this study proposes a cross‐species, multi‐scale biomimetic interface. By modeling staged wet adhesion, it integrates self‐regulating liquid bridges with directional drainage. This design ensures stable, high‐performance flexible sensing in complex physiological environments, offering a ...
Jieliang Zhao, Yu Xiang, Heng Wang, Huiqing Xu, Zhong Liu, Lulu Liang, Fengwen Jiang, Xuemei Chen, Wenzhong Wang, Chenqing Liu, Guodong Liu, Shaoze Yan, Xu Hou   +12 more
wiley   +1 more source