scholarly journals Skin effect photon-trapping enhancement in infrared photodiodes

2021 ◽  
Author(s):  
Wei-Da Hu ◽  
Haonan Ge ◽  
Runzhang Xie ◽  
YunFeng Chen ◽  
Peng Wang ◽  
...  
Keyword(s):  
Skin Effect ◽  
Infrared Photodiodes ◽  
Photon Trapping

TREATMENT OF WELDED JOINTS BY A PULSE ELECTROMAGNETIC FIELD WITH SMALL SKIN-EFFECT

2018 ◽  
Vol 2018 (50) ◽  
pp. 106-114
Author(s):  
Yu. Vasetskiy ◽  
◽  
I. Kondratenko ◽  
I. Mazurenko ◽  
М. Pashchyn ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Welded Joints ◽  
Skin Effect ◽  
Pulse Electromagnetic Field

Influence of fasteners and connections flexibility on deflections of steel building including the stressed skin effect

2018 ◽  
Vol 2 (21) ◽  
pp. 131-148 ◽  
Author(s):  
Natalia Korcz ◽  
Elżbieta Urbańska-Galewska
Keyword(s):  
Finite Elements ◽  
Skin Effect ◽  
Numerical Models ◽  
Orthotropic Shell ◽  
3D Structure ◽  
Negligible Effect ◽  
Transverse Stiffness ◽  
Shell Models ◽  
Steel Building ◽  
Two Sides

The paper presents the analysis of the influence of fasteners and connections flexibility on displacements of symmetrical single-bay pitched-roof steel building, including trapezoidal cladding acting as a diaphragm. The purpose of the article was to compare numerical models with and without taking into consideration fasteners and connections flexibility in order to observe the differences in transverse stiffness of the building during modifying model from the simple one to more complex and precise. The analyses were carried out for the 3D structure. Fasteners and connections were substituted by equivalent beam finite elements. Corrugated sheets were replaced by three types of equivalent orthotropic shell models and the influence of the choice of the model on the stiffness of the building was observed. The results showed that in the analysed structure the flexibility of fasteners and connections has negligible effect on transverse displacements of the building in the case of four sides fastening of the sheeting, however in the case of two sides fastening the influence significantly increases.

WELL TESTING HORIZONTALGAS-CONDENSATE WELLS

2017 ◽  
pp. 56-61
Author(s):  
M. L. Karnaukhov ◽  
O. N. Pavelyeva
Keyword(s):  
Comparative Analysis ◽  
Skin Effect ◽  
Horizontal Wells ◽  
Gas Condensate ◽  
Low Permeability ◽  
Well Testing ◽  
Flow Capacity ◽  
Formation Zone ◽  
Horizontal Wellbore

The well testing of gas-condensate horizontal wells are discussed in the article and the comparative analysis of borehole flow capacity, depending on the mode of it’s operation is presented. Extra attention is focused on the issue of timely identification of the reasons for the reduction of fluid withdrawal from the reservoir. The presence of high skin effect is proved, which confirms the existence of low-permeability of bottomhole formation zone related to condensation in the immediate area of the horizontal wellbore.

Modelación de Regímenes de Redes Eléctricas en Presencia de Distorsión Armónica

2017 ◽  
Vol 13 (1) ◽  
Author(s):  
I. González ◽  
S. Marrero ◽  
A. Legra ◽  
A. León
Keyword(s):  
Skin Effect ◽  
Para Determinar ◽  
La Red

En el artículo se presentan la comparación de la modelación de los elementos en las redes eléctricas en presencia de armónicos superiores de corriente y tensión. Se muestra que en el cálculo de los regímenes de trabajo de la red, resulta necesario considerar el efecto piel (Skin Effect) y las corrientes de Eddy. Al tener en cuenta estos elementos, el error en los cálculos del consumo de energía eléctrica se reduce en gran medida. Se programó una herramienta computacional (DYCSE) para determinar el flujo armónico por el método de Gauss-Seidel que fue comparado con el cálculo realizado por el software Easy Power que utiliza la técnica de inyección de corriente y así demostrar la factibilidad de uso del DYCSE a partir del grado de coincidencia en los resultados obtenidos por ambos método en un esquema patrón.

Realization of high detectivity mid-infrared photodiodes based on highly mismatched AlInSb on GaAs substrates

2021 ◽  
Vol 129 (5) ◽  
pp. 053106
Author(s):  
H. Fujita ◽  
Y. Sakurai ◽  
D. Yasuda ◽  
O. Morohara ◽  
H. Geka ◽  
...  
Keyword(s):  
Mid Infrared ◽  
Gaas Substrates ◽  
Infrared Photodiodes

scholarly journals A Novel, Improved Equivalent Circuit Model for Double-Sided Linear Induction Motor

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1644
Author(s):  
Qian Zhang ◽  
Huijuan Liu ◽  
Tengfei Song ◽  
Zhenyang Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Equivalent Circuit ◽  
Skin Effect ◽  
Equivalent Circuit Model ◽  
Element Model ◽  
Circuit Model ◽  
End Effects ◽  
3D Finite Element ◽  
Linear Induction

A novel, improved equivalent circuit model of double-sided linear induction motors (DLIMs) is proposed, which takes the skin effect and the nonzero leakage reactance of the secondary, longitudinal, and transverse end effects into consideration. Firstly, the traditional equivalent circuit with longitudinal and transverse end effects are briefly reviewed. Additionally, the correction coefficients for longitudinal and transverse end effects derived by one-dimensional analysis models are given. Secondly, correction factors for skin effect, which reflects the inhomogeneous air gap magnetic field vertically, and the secondary leakage reactance are derived by the quasi-two-dimensional analysis model. Then, the proposed equivalent circuit is presented, and the excitation reactance and secondary resistance are modified by the correction coefficients derived from the three analytical models. Finally, a three-dimensional (3D) finite element model is used to verify the proposed equivalent circuit model under varying air gap width and frequency, and the results are also compared with that of the traditional equivalent circuit models. The calculated thrust characteristics by the proposed equivalent circuit and 3D finite element model are experimentally validated under a constant voltage–frequency drive.

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