EFFICIENT IMPLEMENTATION OF HIGHER-ORDER FINITE VOLUME TIME-DOMAIN METHOD FOR ELECTRICALLY LARGE SCATTERERS

2009 ◽  
Vol 17 ◽  
pp. 233-254 ◽  
Author(s):  
Avijit Chatterjee ◽  
R. S. Myong
Keyword(s):  
Finite Volume ◽  
Time Domain ◽  
Higher Order ◽  
Efficient Implementation ◽  
Time Domain Method ◽  
Domain Method

A Finite Volume Time Domain Method for In-Plane Vibration on Mixed Grids

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Ling-kuan Xuan ◽  
Ping-jian Ming ◽  
Jing-feng Gong ◽  
Da-yuan Zheng ◽  
Wen-ping Zhang
Keyword(s):  
Finite Volume ◽  
Time Domain ◽  
Present Method ◽  
Time Domain Method ◽  
Displacement Fields ◽  
Plane Vibration ◽  
Quadrilateral Elements ◽  
Domain Method ◽  
Commercial Code ◽  
Phase Angles

A finite volume time domain method is developed for in-plane vibration based on mixed triangular and quadrilateral elements. Here the linear quadrilateral element shape function is introduced instead of the constant one to improve the accuracy of the present method. The improvement is validated to be vital to avoid violent numerical oscillation of displacement fields when applying to the point–source problem. The present method is proposed to analyze the transient responses and the natural characteristics of several in-plane problems. The results show good agreement with the commercial code solutions and the analytical solutions. In order to demonstrate the capability of the present method for multiexcitation problems, an example with sources containing different frequencies and phase angles, concentrated and uniform distributions, and impulse and continuous forms is analyzed.

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