Analysis of Nonlinear Multilayered Waveguides and MQW Structures: A Field Evolution Approach Using Finite-Difference Formulation

2009 ◽  
Vol 45 (4) ◽  
pp. 345-350 ◽  
Author(s):  
Sourabh Roy ◽  
Partha Roy Chaudhuri
Keyword(s):  
Finite Difference ◽  
Field Evolution ◽  
Finite Difference Formulation ◽  
Evolution Approach

A finite‐difference formulation of borehole wave propagation in prestressed formations

1999 ◽  
Author(s):  
Bikash K. Sinha ◽  
Qing‐Huo Liu ◽  
Thomas J. Plona ◽  
Kenneth W. Winkler
Keyword(s):  
Wave Propagation ◽  
Finite Difference ◽  
Finite Difference Formulation

Optimal Circumferential Placement of Cylindrical Thermocouple Probes for Reduction of Excitation Forces

1992 ◽  
Author(s):  
Eben C. Cobb ◽  
Tsu-Chien Cheu ◽  
Jay Hoffman
Keyword(s):  
Sensitivity Analysis ◽  
Linear Programming ◽  
Finite Difference ◽  
Design Methodology ◽  
Turbine Stage ◽  
Linear Programming Method ◽  
Optimization Scheme ◽  
Forcing Function ◽  
Finite Difference Formulation ◽  
Critical Excitation

This paper presents a design methodology to determine the optimal circumferential placement of cylindrical probes upstream of a turbine stage for reduced excitation forces. The potential flow forcing function generated by the probes is characterized by means of a Fourier analysis. A finite difference formulation is used to evaluate the sensitivity of the forcing function to the probe positions. An optimization scheme, based on the linear programming method, uses the sensitivity analysis results to reposition the probes such that the Fourier amplitudes of critical excitation orders are reduced. The results for an example design situation are presented.

scholarly journals Application of block-centered finite difference formulation for non-linear finite strain consolidation

2014 ◽  
Vol 18 (7) ◽  
pp. 1991-1995
Author(s):  
Dongseop Lee ◽  
Chihun Sung ◽  
Chulho Lee ◽  
Hangseok Choi
Keyword(s):  
Finite Difference ◽  
Finite Strain ◽  
Finite Difference Formulation ◽  
Non Linear
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