scholarly journals Elliptical Cavity Shape Optimization for Acceleration and HOM Damping

Author(s):  
Haipeng Wang ◽  
R. Rimmer ◽  
Genfa Wu
2008 ◽  
Vol 7 (2) ◽  
pp. 81
Author(s):  
L. A. O. Rocha ◽  
C. Biserni ◽  
E. Lorenzini

This work reports, according to Bejan’s Constructal theory, the geometric optimization of an elliptical cavity that intrudes into a solid conducting wall. The objective is to minimize the global thermal resistance between the solid and the cavity. There is uniform heat generation on the solid wall. The cavity is optimized for two sets of thermal conditions: isothermal cavity and cavity bathed by a steady stream of fluid. The solid conducting wall is isolated on the external perimeter. The total volume and the elliptical cavity volume are fixed while the geometry of the cavity is free to vary. The results show that the optimized geometrical shapes are relatively robust, i.e., insensitive to changes in some of the design parameters: the cavity shape is optimal when penetrates the conducting wall almost completely.


Author(s):  
Reza Masoudi Nejad ◽  
Danial Ghahremani Moghadam ◽  
Mohammad Ramazani Moghadam ◽  
Mohammad Aslani ◽  
Hamed Asghari Moghaddam ◽  
...  

2007 ◽  
Vol 6 (1) ◽  
pp. 41
Author(s):  
L. A. O. Rocha ◽  
G. C. Montanari ◽  
E. D. Dos Santos ◽  
A. Da S. Rocha

This paper relies on the Constructal Design to optimize the geometry of a cavity that penetrates into a solid conducting wall. The objective is to minimize the global thermal resistance between the solid and the cavity.  There is uniform heat generation on the solid wall. We studied three shapes of the cavity: rectangular, triangular, and elliptical. The total volume and the cavity volume are fixed with variable aspect ratios. The cavity shape is optimal when it penetrates the conducting wall completely. The rectangular cavity performs better than the elliptical and triangular ones. On the other side, the elliptical cavity has better performance than the triangular one.  We also optimized a first construct, i.e., a cavity shaped as T. The performance of the T-shaped cavity is superior to that of the rectangular cavity optimized in the first part of the paper.


2019 ◽  
Vol 132 ◽  
pp. 773-785 ◽  
Author(s):  
Mostafa Fatehi ◽  
Mahdi Nili-Ahmadabadi ◽  
Omid Nematollahi ◽  
Ali Minaiean ◽  
Kyung Chun Kim

2016 ◽  
Vol 136 (8) ◽  
pp. 343-347 ◽  
Author(s):  
Ryo Sakai ◽  
Hiroaki Imai ◽  
Masayuki Sohgawa ◽  
Takashi Abe

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 1512-1518 ◽  
Author(s):  
Jens I. Madsen ◽  
Wei Shyy ◽  
Raphael T. Haftka

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