منابع مشابه
Comparison of Ducted and Non-Ducted Ship Propellers with Constraints Consideration Using Genetic Algorithm
In recent years, in spite of progressing in the ship propulsion system, many problems are required to work in order to gain highest performance. Optimization of propeller system, as the most important and applicable in this type of systems is of special importance. In many vessels, due to their certain conditions design, ducted propeller is used. Genetic algorithm is a powerful method for findi...
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Excavators are heavy construction equipment consisting of a boom, dipper (or stick), bucket and cab on a rotating platform known as the "house". In this paper the hydraulic shovel excavator is analyzed through the D-H method. The shovel working device with the bucket capacity of 36m3 is optimized. The determination of the objective function, variables and constraints are described in ...
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Various methods have been used to economically design wastewater and stormwater collection systems. In this article, Discrete Differential Dynamic Programming (DDDP) which is a subsection of dynamic programming (DP) was used. For each pipe network, various alternatives such as depth and slope of pipe laying and various diameters could be considered to satisfy hydraulic and engineering constrain...
متن کاملMedial design of blades for hydroelectric turbines and ship propellers
We present a method for constructing blades of hydroelectric turbines and ship propellers based on design parameters that possess a clear hydraulic meaning. The design process corresponds to the classical construction of a blade using the medial surface of the blade and profile curves attached to it. The main new contribution of the paper consists in realizing this construction using B-spline t...
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ژورنال
عنوان ژورنال: JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
سال: 2011
ISSN: 1344-6460
DOI: 10.2322/jjsass.59.298