Results 51 to 60 of about 177,184 (308)

Development of Heat Engines Powered by Twisted and Coiled Polymer Fiber Actuators

Advanced Materials Technologies, EarlyView.
Continuously rotating engines driven by thermally responsive actuating materials can turn waste heat into useful energy. For the first time heat engines operated by twisted and coiled polymer fiber actuators are demonstrated with engine design guided by two simple analytical models.
Geoffrey M. Spinks, Burhan Bin Asghar Abbasi, Zhen Jiang   +2 more
wiley   +1 more source

A Study of the Anisotropic Static Elasticity System in Thin Domain

Journal of Function Spaces, 2021
We study the asymptotic behavior of solutions of the anisotropic heterogeneous linearized elasticity system in thin domain of ℝ3 which has a fixed cross-section in the ℝ2 plane with Tresca friction condition.
Yassine Letoufa, Salah Mahmoud Boulaaras, Hamid Benseridi, Mourad Dilmi, Asma Alharbi   +4 more
doaj   +1 more source

Development and Assessment of an Isotropic Four-Equation Model for Heat Transfer of Low Prandtl Number Fluids

Frontiers in Energy Research, 2022
In the simple gradient diffusion hypothesis, the turbulent Prandtl number (Prt) with a constant of 0.85 is difficult to accurately predict for liquid metals having low Prandtl numbers (Pr), while a four-equation model can improve this solution by ...
Xingkang Su, Xingkang Su, Xianwen Li, Xianwen Li, Xiangyang Wang, Yang Liu, Qijian Chen, Qianwan Shi, Xin Sheng, Xin Sheng, Long Gu, Long Gu, Long Gu   +12 more
doaj   +1 more source

Two‐Photon Polymerized Microvascular Environments for Multicellular Modeling of the Blood–Brain Tumor Barrier

Advanced Materials Technologies, EarlyView.
Modeling the blood–brain tumor barrier is challenging due to complex interactions between brain microvasculature and glioma cells. We present two‐photon polymerized 3D micro‐porous capillary‐like structures that support endothelial alignment, cytoskeletal organization, and pericyte‐endothelial‐glioma tri‐cultures.
Nastaran Barin, Sayba Z. Chowdhury, Maurice de Wit, Rania Head, Kiki Bals, Erwin Brosens, Marvin M. van Luijn, Hayri E. Balcioglu, Angelo Accardo, Pim J. French   +9 more
wiley   +1 more source

Comparative predictions of turbulent non-isothermal flow of a viscoplastic fluid with yield stress

Heliyon
RANS simulation of turbulent non-isothermal flow in a pipe by transition of Newtonian fluid into a viscoplastic non-Newtonian fluid is carried out.
M.A. Pakhomov, U.K. Zhapbasbayev
doaj   +1 more source

Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review

Advanced Robotics Research, EarlyView.
Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley   +1 more source

Dynamic analysis of shallow embedded jacket offshore structures under wave forces

SN Applied Sciences, 2022
In this paper, the stress of temporary structures during the construction of offshore structures is analysed through the study of the temporary buried drilling platform.
Yanzhao Yuan, Xiancheng Wang
doaj   +1 more source

Rheological Chaos in a Scalar Shear-Thickening Model [PDF]

, 2002
We study a simple scalar constitutive equation for a shear-thickening material at zero Reynolds number, in which the shear stress \sigma is driven at a constant shear rate \dot\gamma and relaxes by two parallel decay processes: a nonlinear decay at a ...
A. Ajdari, A. Ajdari, A. Groisman, A. Groisman, A. Wolf, A.E. Likhtman, A.S. Wunenburger, C. Derec, D. A. Head, D.A. Head, D.A. Head, H.M. Laun, H.M. Laun, J.F. Berret, J.F. Berret, J.L. Goveas, J.R. Melrose, J.W. Bender, M. E. Cates, M. Grosso, M.C. Newstein, M.M. Britton, M.M. Britton, N.A. Spenley, O. Hess, O. Radulescu, P.D. Olmsted, R. Bandyopadhyay, R. Bandyopadhyay, T.C.B. McLeish, W.J. Frith, Y.T. Hu   +31 more
core   +5 more sources

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

An expert system for predicting shear stress distribution in circular open channels using gene expression programming

Water Science and Engineering, 2018
The shear stress distribution in circular channels was modeled in this study using gene expression programming (GEP). 173 sets of reliable data were collected under four flow conditions for use in the training and testing stages.
Zohreh Sheikh Khozani, Hossein Bonakdari, Isa Ebtehaj   +2 more
doaj   +1 more source