Shape optimization of a three-dimensional membrane-structured solar sail using an angular momentum unloading strategy
نویسندگان
چکیده
منابع مشابه
a paradigm shift away from method-wise teaching to strategy-wise teaching: an investigation of reconstructive strategy versus communicative strategy
چکیده: هدف اصلی این مطالعه ی توصیفی تحقیقی در حقیقت تلاشی پساروش-گرا به منظور رسیدن به نتیجه ای منطقی در انتخاب مناسبترین راهکار آموزشی بر گرفته از چارچوب راهبردی مطرح شده توسط والدمر مارتن بوده که به بهترین شکل سازگار و مناسب با سامانه ی آموزشی ایران باشد. از این رو، دو راهکار آموزشی، راهکار ارتباطی و راهکار بازساختی، برای تحقیق و بررسی انتخاب شدند. صریحاً اینکه، در راستای هدف اصلی این پژوهش، ر...
15 صفحه اولThree-dimensional Parametric Shape Optimization Using Parallel Computers
The design software system described here is based on a combination of several software components. These components include optimization, physics-based analysis such as computational fluid dynamics (CFD) and finite element analysis (FEA) and supporting tools, and shape design parameterization. The optimization and CFD/FEA related codes, such as mesh generation and partitioning, can be consider...
متن کاملShape Optimization of an abrupt contraction using numerical streamlining
This research was conducted to find a reliable technique to shape an abrupt contraction for minimizing the energy loss. The method may find broader applications in design of variety of transitional cross-sections in hydraulic structures. The streamlines in a 2-D contraction were calculated through solving the potential flow equations in rectangular and curvilinear coordinates. The natural cubic...
متن کاملThree - Dimensional Shape Description Using
Blum's transform, variously known as the symmetric axis transform, medial axis transform, or skeleton, and his associated two-dimensional shape description methodology are generalized to three-dimensions. Bookstein's twodimensional algorithm for finding an approximation to the symmetric axis is also generalized. The symmetric axis (SA) of an object with a smooth boundary is the locus of points ...
متن کامل2+1-dimensional black holes with momentum and angular momentum
Exact solutions of Einstein’s equations in 2+1-dimensional anti-de Sitter space containing any number of black holes are described. In addition to the black holes these spacetimes can possess “internal” structure. Accordingly the generic spacetime of this type depends on a large number of parameters. Half of these can be taken as mass parameters, and the rest as the conjugate (angular) momenta....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advances in Space Research
سال: 2021
ISSN: 0273-1177
DOI: 10.1016/j.asr.2020.12.036