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Yury Solyaev
The elastodynamic stress field near a crack tip propagating at a constant speed in isotropic quasi-brittle material was investigated, taking into account the strain gradient and inertia gradient effects. An asymptotic solution for a steady-state Mode-I c...
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Hui Gao, Yule Hu, Longchen Duan and Kun Ai
The pseudosteady state productivity index is very important for evaluating the production from oil and gas wells. It is usually used as an objective function for the optimization of fractured wells. However, there is no analytical solution for it, especi...
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Maxim Protasov, Kirill Gadylshin, Dmitry Neklyudov and Ludek Klimes
This study considers the full waveform inversion (FWI) method based on the asymptotic solution of the Helmholtz equation. We provide frequency-dependent ray tracing to obtain the wave field used to compute the FWI gradient and calculate the modeled data....
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Alok Dhaundiyal, Suraj B. Singh
Pág. 92 - 98
This article focuses on the influence of relevant parameters of biomass pyrolysis on the numerical solution of the isothermal nth-order distributed activation energy model (DAEM) using the Rayleigh distribution as the initial distribution function F(E) o...
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Nikolay Nefedov, Bogdan Tishchenko and Natalia Levashova
An algorithm is presented for the construction of an asymptotic approximation of a stable stationary solution to a diffusion equation system in a two-dimensional domain with a smooth boundary and a source function that is discontinuous along some smooth ...
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Yuri N. Skiba
Pág. 283 - 296
The nonlinear barotropic vorticity equation (BVE) describing the vortex dynamics of viscous incompressible and forced fluid on a rotating sphere is considered. The asymptotic behavior of solutions of nonstationary BVE as t ? 8 is studied. Particular form...
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Giovanni Riccio, Gianluca Gennarelli, Flaminio Ferrara, Claudio Gennarelli and Rocco Guerriero
This research paper proposes an analytical approach for evaluating electromagnetic scattering from a planar complex object made of a perfect electric conductor, which hosts a double negative metamaterial half-layer on the lit face. The method is based on...
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M. V. Korovina,V.Y. Smirnov
Pág. 26 - 32
The present paper deals with asymptotic expansions for solution degenerate elliptic differential equations. The technique for the interpretation and construction of asymptotic expansions on the basis of the Laplace-Borel transform is referred to as resur...
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John Bellos and Apostolos Konstantinidis
This paper examines and provides a robust solution to the problem of yield and failure curvatures of reinforced concrete (RC) cross-sections, taking into account cracking. At the same time, it calculates the corresponding necessary reinforcement or the m...
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Dmitry Losev,Dmitry Bardashov
Pág. 1 - 4
The approximated solution of wave propagation problem in smooth heterogeneous media by use of the iterated kernels method is proposed. It represents the result of iterated method application to the integral equation equivalent to the Helmholtz scalar equ...
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D.V. Losev,D.S. Bardashov
Pág. 8 - 11
AThe approximated solution of the wave propagation problem in smoothly heterogeneous medium on the basis of the method of iterated kernels is proposed in this article. The solution is obtained by the method of successive approximations to an integral equ...
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Paul M. Delgado, V. M. Krushnarao Kotteda and Vinod Kumar
Efficient and accurate poroelasticity models are critical in modeling geophysical problems such as oil exploration, gas-hydrate detection, and hydrogeology. We propose an efficient operator splitting method for Biot’s model of linear poroelasticity...
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TOMÁS MORALES ALCOTZI,JULIAN ADEM
The asymptotic behaviour of Adem's model is analyzed as a function of the external forcing and the dissipation coefficient. The existence of a bounded attracting set of the sea surface temperature anomalies in a neighborhood of zero is proved. It is s...
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A. J. Chamkha, A. M. Rashad, E. R. EL-Zahar and Hamed A. EL-Mky
In the current framework, a model is constituted to explore the impacts of high suction and partial slip on Fe3O4–water nanoliquid flow over a porous moveable surface in a parallel free stream. The mechanisms of heat transfer ...
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Liping Chen, Hui Zhang, Wei Wang and Qiliang Zhang
Bidirectional asymptotic structure methods have long been used to solve topological optimization problems, but are prone to being stuck in local optimal solutions. To solve this problem, this paper proposed a topology optimization method based on the Bi-...
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Gerhard Hasslinger, Konstantinos Ntougias, Frank Hasslinger and Oliver Hohlfeld
We evaluate analysis results and approximations for the performance of basic caching methods, assuming independent requests. Compared with simulative evaluations, the analysis results are accurate, but their computation is tractable only within a limited...
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Qi Wu, Jian Zhang, Yanyu Zhang, Gang Xin and Jianing Guo
As an emerging technology, reconfigurable intelligent surface (RIS) has attracted increasing attention due to the ability to configure the wireless propagation environment. Parallel multiple-input multiple-output (MIMO) visible light communication (VLC) ...
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Ernesto Sanchez-Laulhe, Ramon Fernandez-Feria and Anibal Ollero
A new forward-flight model for bird-like ornithopters is presented. The flight dynamics model uses results from potential, unsteady aerodynamics to characterize the forces generated by the flapping wings, including the effects of the dynamic variables on...
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Alexis Thibault, Lénaïc Chizat, Charles Dossal and Nicolas Papadakis
This article describes a set of methods for quickly computing the solution to the regularized optimal transport problem. It generalizes and improves upon the widely used iterative Bregman projections algorithm (or Sinkhorn?Knopp algorithm). We first prop...
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Zeeshan Khan, Rehan Ali Shah, Saeed Islam, Hamid Jan, Bilal Jan, Haroon-Ur Rasheed and Aurangzeeb Khan
The most important plastic resins used for wire coating are polyvinyl chloride (PVC), nylon, polysulfone, and low-/high-density polyethylene (LDPE/HDPE). In this article, the coating process is performed using elastic-viscous fluid as a coating material ...
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