Results 11 to 20 of about 32,657 (175)
Results in Physics, 2020 An isogeometric numerical procedure based on non-uniform rational B-splines is applied to solve the free vibration of carbon nanotubes reinforced and functionally graded material sector cylindrical shells.
Yantao Zhang +4 more
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Factorization of linear elliptic boundary value problems in non-cylindrical domains [PDF]
Comptes Rendus. Mathématique, 2011 We present a method of factorization for linear elliptic boundary value problems considered in non-cylindrical domains. We associate a control problem to the boundary value problem which regularizes it. The technique of change of variables is used to study this problem.
Henry, Jacques +2 more
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Far-field ultrasonic imaging using hyperlenses
Scientific Reports, 2022 Hyperlenses for ultrasonic imaging in nondestructive evaluation and non-invasive diagnostics have not been widely discussed, likely due to the lack of understanding on their performance, as well as challenges with reception of the elastic wavefield past ...
Mohamed Subair Syed Akbar Ali +1 more
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A 1D Reduced-Order Model (ROM) for a Novel Latent Thermal Energy Storage System
Energies, 2022 Phase change material (PCM)-based thermal energy storage (TES) systems are widely used for repeated intermittent heating and cooling applications. However, such systems typically face some challenges due to the low thermal conductivity and expensive ...
Gargi Kailkhura +3 more
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Microwave Tomography With LSTM-Based Processing of the Scattered Field
IEEE Open Journal of Antennas and Propagation, 2021 The quantitative inspection of unknown targets or bodies by means of microwave tomography requires a proper modeling of the field scattered by the structures under test, which in turn depends on several factors related to the adopted antennas and ...
Alessandro Fedeli
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Variational Equations of Schroedinger-Type in Non-cylindrical Domains
Journal of Differential Equations, 2001 The boundary value problem \[ u(x, t)_t- i\sum (a_{ij}(x, t) u(x,t)_{x_i})_{x_j}- c(x,t) u(x,t)= f(x,t)\;\text{in }Q, \] \[ u(x,t)= 0\;\text{on }\Sigma,\quad u(x,0)= u_0(x)\;\text{on }Q_0, \] is investigated, where \(Q\subset \mathbb{R}^n\times (0,T)\) is an open subset (with the lateral boundary denoted by \(\Sigma\)) whose sections \(Q_t\) (\(t ...
BERNARDI, MARCO LUIGI +2 more
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Complex WGM frequencies of gyroelectric cylindrical resonators
IET Microwaves, Antennas & Propagation, 2021 Asymptotic closed‐form expressions for calculating complex transverse electric (TE)/transverse magnetic (TM) whispering gallery mode (WGM) frequencies in homogeneous gyroelectric circular cylindrical resonators of infinite length are derived. In addition,
Konstantinos Katsinos +4 more
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Tribology Online, 2022 The purpose of this work is to investigate the effect of cylindrical, kite and triangular shaped dimples on static, dynamic and stability performance of partial textured hydrodynamic journal bearing working under turbulent regime.
Jagjit Singh Maan, Rajeev Kumar Awasthi
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Non-Fourier Heat Conduction of a Functionally Graded Cylinder Containing a Cylindrical Crack
Advances in Mathematical Physics, 2020 The present work investigates the problem of a cylindrical crack in a functionally graded cylinder under thermal impact by using the non-Fourier heat conduction model.
Jiawei Fu +3 more
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Logarithmic wave equations in non-cylindrical domains
, 2021 This paper is devoted to studying a type of logarithmic wave equation in non-cylindrical domains. Firstly, by the penalty method, we prove the existence of weak solutions to such kind of equations. Secondly, different from the dissipative wave equation, the energy defined in this problem is not always positive.
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