scholarly journals Reflection and Transmission of an Electromagnetic X-Wave Incident on a Planar Air-Dielectric Interface: Spectral Analysis

2001 ◽  
Vol 30 ◽  
pp. 213-249 ◽  
Author(s):  
A. M. Shaarawi ◽  
I. M. Besieris ◽  
A. M. Attiya ◽  
E. El-Diwany
Keyword(s):  
Spectral Analysis ◽  
Wave Incident ◽  
Reflection And Transmission ◽  
Dielectric Interface

The wide-spacing approximation applied to multiple scattering and sloshing problems

1990 ◽  
Vol 210 ◽  
pp. 647-658 ◽  
Author(s):  
D. V. Evans
Keyword(s):  
Plane Wave ◽  
Closed Form ◽  
Multiple Scattering ◽  
Water Wave ◽  
Wave Incident ◽  
Reflection And Transmission ◽  
Wide Spacing ◽  
Plane Wave Incident ◽  
Rigid Walls

Linear water-wave theor is used in conjuctin with a wide-spacing approximation to develop closed-form expressions for the reflection and transmission coeffcients appropriate to a plane wave incident upon any number of identical equally spaced obstacles in two dimensins, and also to derive a real expressin from which the sloshing requencies, which occur when the bodies are bounded by rigid walls, can be determined. In each case the solutin is in terms of known properties of radiation problems associated with any one of the bodies in isolation.

scholarly journals Propagation of a whistler wave incident from above on the lower nighttime ionosphere

2017 ◽  
Vol 35 (3) ◽  
pp. 671-675 ◽  
Author(s):  
Peter Bespalov ◽  
Vera Mizonova
Keyword(s):  
Wave Equations ◽  
Low Frequency ◽  
Ground Surface ◽  
Lower Ionosphere ◽  
Whistler Wave ◽  
Wave Incident ◽  
Reflection And Transmission ◽  
Wave Refraction ◽  
Horizontal Wave ◽  
Typical Condition

Abstract. The problems of reflection and transmission of a whistler wave incident in the nighttime ionosphere from above are considered. Numerical solution of the wave equations for a typical condition of the lower ionosphere is found. The solution area comprises both the region of strong wave refraction and a sharp boundary of the nighttime ionosphere (∼ 100 km). The energy reflection coefficient and horizontal wave magnetic field on the ground surface are calculated. The results obtained are important for analysis of the extremely low-frequency and very low-frequency (ELF–VLF) emission phenomena observed from both the satellites and the ground-based observatories.

scholarly journals Acoustic X-wave reflection and transmission at a planar interface: Spectral analysis

2000 ◽  
Vol 107 (1) ◽  
pp. 70-86 ◽  
Author(s):  
Amr M. Shaarawi ◽  
Ioannis M. Besieris ◽  
Ahmed M. Attiya ◽  
Essam El-Diwany
Keyword(s):  
Spectral Analysis ◽  
Wave Reflection ◽  
Planar Interface ◽  
Reflection And Transmission

Determination of Reflection and Transmission Coefficients in Rigidly Connected Beams Using Timoshenko Beam Theory

1996 ◽  
Author(s):  
James Stolte ◽  
Joseph M. Santiago
Keyword(s):  
Power Flow ◽  
Beam Theory ◽  
Reflection And Transmission Coefficients ◽  
Wave Incident ◽  
Euler Beam ◽  
Reflection And Transmission ◽  
High Frequencies ◽  
Transmission Coefficients ◽  
Euler Beam Theory

Abstract Knowledge of the behavior of a wave incident at a joint is necessary to properly analyze the vibration of a structure. We need to know how much energy is reflected and transmitted and also the type of wave carrying the energy. Typically, Euler beam theory is used to derive the reflection and transmission coefficients at high frequencies. Errors can become unacceptably large in the frequency range currently being analyzed using Statistical Energy Analysis (SEA) and the Power Flow Finite Element Method (PFFEM). We derive reflection and transmission coefficients due to a bending wave incident on a rigid joint between two infinitely long beams using Timoshenko theory and compare results to those obtained using Euler theory. We also compute the reflection and transmission efficiencies that determine the amount of power carried by each wave.

Sign in / Sign up

Export Citation Format

Share Document