Results 41 to 50 of about 8,522 (253)

Numerical investigation of photovoltaic thermal energy efficiency improvement using the backward step containing Cu-Al2O3 hybrid nanofluid

open access: yesAlexandria Engineering Journal, 2023
The increasing demand for renewable energy sources, such as photovoltaic thermal systems, requires efficient cooling techniques to improve performance. Hybrid nanofluids have shown promise in enhancing the cooling performance of such systems.
Abid Ali Memon   +3 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

The local backward heat problem

open access: yes, 2017
In this paper, we study the local backward problem of a linear heat equation with time-dependent coefficients under the Dirichlet boundary condition. Precisely, we recover the initial data from the observation on a subdomain at some later time. Thanks to the "optimal filtering" method of Seidman, we can solve the global backward problem, which ...
openaire   +3 more sources

A semi-analytical method for 1D, 2D and 3D time fractional second order dual-phase-lag model of the heat transfer

open access: yesAlexandria Engineering Journal, 2021
In this paper we present a new numerical technique for 1D, 2D, and 3D time-fractional second order dual-phase-lag model of heat transfer. The problem is formulated as a solution of a time fractional partial differential equation (TFPDE) subjected to ...
Ji Lin, Yuhui Zhang, Sergiy Reutskiy
doaj   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

open access: yesAdvanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang   +6 more
wiley   +1 more source

A Regularization Method for Backward Heat Equation on a Rectangular Domain

open access: yesJournal of Harbin University of Science and Technology
A regularization method is proposed for the non-homogeneous backward heat equation with a space-dependent source on a two-dimensional rectangular domain. This method is an extension of a known regularization approach.
WANG Yu, SUN Wei
doaj   +1 more source

Cryogenic Deformation Behavior of TiAl and Insights Into Embrittlement After High‐Temperature Exposure Combined With Secondary Ion Mass Spectroscopy of Near Surface Chemistry

open access: yesAdvanced Engineering Materials, EarlyView.
Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul   +5 more
wiley   +1 more source

Backward uniqueness for heat equations with coefficients of bounded variation in time

open access: yesElectronic Journal of Differential Equations, 2013
Uniqueness of solutions to the backward Cauchy problem for heat equations with coefficients of bounded variation in time is shown through the Carleman estimate.
Shigeo Tarama
doaj  

On the solution of fluid flow and heat transfer problem in a 2D channel with backward-facing step

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
The stable stationary solutions of the test problem of hydrodynamics and heat transfer in a plane channel with the backward-facing step have been considered in the work for extremely high Reynolds numbers and expansion ratio of the stream $ER$.
Alexander A Fomin, Liubov N Fomina
doaj   +1 more source

Home - About - Disclaimer - Privacy