scholarly journals A note on the search for ‘optimal’ shapes of arch dams

2009 ◽  
Author(s):  
M. Fanelli ◽  
A. Fanelli
Keyword(s):  
Arch Dams ◽  
Optimal Shapes

Thermal Analysis of DC Arch Dams Due to Variation in Seasonal Temperatures

2020 ◽  
Author(s):  
Deepak Patil ◽  
Suresh Ukarande ◽  
Dr. Shrikant Charhate
Keyword(s):  
Thermal Analysis ◽  
Arch Dams

Compactness of 𝑀-uniform domains and optimal thermal insulation problems

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hengrong Du ◽  
Qinfeng Li ◽  
Changyou Wang
Keyword(s):  
Thermal Insulation ◽  
Heat Insulation ◽  
Optimization Problems ◽  
Optimal Shape ◽  
Optimal Heat ◽  
Optimal Shapes ◽  
Stable Solutions ◽  
Uniform Domains

Abstract In this paper, we will consider an optimal shape problem of heat insulation introduced by [D. Bucur, G. Buttazzo and C. Nitsch, Two optimization problems in thermal insulation, Notices Amer. Math. Soc. 64 (2017), 8, 830–835]. We will establish the existence of optimal shapes in the class of 𝑀-uniform domains. We will also show that balls are stable solutions of the optimal heat insulation problem.

A New Troughlike Nonimaging Solar Concentrator

2001 ◽  
Vol 124 (1) ◽  
pp. 51-54 ◽  
Author(s):  
Eduardo A. Rinco´n ◽  
Fidel A. Osorio
Keyword(s):  
Concentration Ratio ◽  
Glass Tube ◽  
Two Dimensional ◽  
Solar Concentrator ◽  
Steam Generation ◽  
Acceptance Angle ◽  
Practical Applications ◽  
Optimal Shapes ◽  
Heating Steam ◽  
East West

A new two-dimensional concentrator for solar energy collection has been developed. The concentrator has the following advantages, when compared with the classic Compound Parabolic Concentrators invented by Roland Winston, W. T. Welford, A. Rabl, Baranov, and other researchers: 1) It allows the use of parabolic mirrors, which have a reflecting area much smaller for a given concentration ratio and acceptance angle. 2) Between the mirror and the absorber, there is a large gap so that conduction losses are reduced. Convection losses can be reduced, too, if the absorber is enclosed within a glass tube. 3) It can be easily manufactured. Instead of seeking the shape of the mirrors for a given shape of the absorber, we have made the inverse statement of the problem, and we have obtained the optimal shapes of the absorbers with a prescribed acceptance angle, for parabolic mirrors, assuming that the intercept factor is unity, the mirrors are perfect, and the absorber surfaces are convex. The concentrator should be east-west oriented, and could be seasonal or monthly tilt adjusted. This concentrator could have many practical applications, such as fluid heating, steam generation, etc.

scholarly journals Nonlinear Seismic Analysis of Arch Dams

1989 ◽  
Vol 115 (4) ◽  
pp. 768-789 ◽  
Author(s):  
Michael J. Dowling ◽  
John F. Hall
Keyword(s):  
Seismic Analysis ◽  
Arch Dams

Continuous production line for concreting the Inguri arch dams

1984 ◽  
Vol 18 (8) ◽  
pp. 389-393 ◽  
Author(s):  
Z. L. Machavariani ◽  
N. N. Shartava ◽  
N. Z. Kolbazov
Keyword(s):  
Production Line ◽  
Continuous Production ◽  
Arch Dams ◽  
Continuous Production Line
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