Results 71 to 80 of about 27,675 (302)

Thermal performance of condensation phase change in the shell side of discontinuous helical baffle heat exchanger

Case Studies in Thermal Engineering
The discontinuous helical baffle heat exchanger is widely used in industrial applications due to its high heat transfer efficiency and uniform flow distribution.
Zhengfeng Shuai, Xiandao Lei, Dianhui Ge, Yajun Shen, Junfeng Zhang, Rui Guo, Yiran Duan, Yueshe Wang   +7 more
doaj   +1 more source

Uniformly Convergent Scheme for Singularly Perturbed Space Delay Parabolic Differential Equation with Discontinuous Convection Coefficient and Source Term

Journal of Mathematics, 2022
A singularly perturbed delay parabolic problem of convection-diffusion type with a discontinuous convection coefficient and source term is examined. In the problem, strong interior layers and weak boundary layers are exhibited due to a large delay in the
Mulunesh Amsalu Ayele, Awoke Andargie Tiruneh, Getachew Adamu Derese   +2 more
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Investigating the Mechanical Properties and Water Permeability of Recycled Pervious Concrete Using Three Typical Gradation Schemes

Buildings
This study aims to investigate the influence of three typical gradation schemes, including continuous gradation, discontinuous gradation, and single gradation, on the mechanical properties and water permeability of pervious concrete using recycled coarse
Hongjie Lv, Zhe Xiong, Huawei Li, Jia Liu, Gang Xu, Haofan Chen   +5 more
doaj   +1 more source

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş, Mehmet Emin Demir, Sercan Özpınar   +2 more
wiley   +1 more source

A generalised spectral problem for the ordinary differential equation with discontinuous coefficient

, 2018
In the article a generalised spectral problem with the second kind integral condition for the linear ordinary differential equation with discontinuous coefficient is investigated.
URINOV,, A., FOZILOVA, F.
core   +2 more sources

Effect of Synthetic Discrete Fibers on the Properties of Epoxy Composites for Protective Means of Transportation Coatings [PDF]

Журнал нано- та електронної фізики, 2017
The results of studies of the effect of synthetic discontinuous fibers on physico-mechanical and tribological properties of epoxy composites. Analysis of the dependence of the temperature and the coefficient of friction of epoxy composites by fiber ...
A.V. Buketov, D.A. Zinchenko, A.V. Sharco   +2 more
doaj   +1 more source

Diffraction coefficients for a discontinuity in curvature

Electronics Letters, 1971
A particular choice of model of a surface displaying a discontinuity in curvature permits a high-frequency asymptotic development of the surface field when a plane electromagnetic wave is incident. The diffraction coefficients are deduced from this, and the results differ significantly from the physical-optics estimates.
openaire   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Embedded Trefftz discontinuous Galerkin methods

, 2023
In Trefftz discontinuous Galerkin methods a partial differential equation is discretized using discontinuous shape functions that are chosen to be elementwise in the kernel of the corresponding differential operator.
Stocker, Paul, 0000-0003-0170-8468, Lehrenfeld, Christoph   +2 more
core   +1 more source