نتایج جستجو برای: Geometry

تعداد نتایج: 144594  

1998
Xiao-Shan Gao

This paper reviews and evaluates three main techniques for automated geometry diagram construction: synthetic methods, numerical computation methods, and symbolic computation methods. We also show how to use these techniques to: parametric mechanical CAD, linkage design, computer vision, dynamic geometry, and CAI (computer aided instruction). The methods and the applications reviewed in this pa...

The present research investigates the implementations of different computational geometry technologies in isogeometric analysis framework for computational fracture mechanics. NURBS and T-splines are two different computational geometry technologies which are studied in this work. Among the features of B-spline basis functions, the possibility of enhancing a B-spline basis with discontinuities ...

ژورنال: علوم آب و خاک 2008
عباس پلنگی, جمال, آخوند علی, علی محمد ,

For an appropriate drip irrigation system design, a prediction of soil wetting pattern is needed for a given soil texture. The wetting pattern geometry is a key factor for emitter distance determination as well as crop type. The geometry of the wetting bulb is dependent on the parameters such as soil hydraulic properties, emitter discharge and the irrigation time. This study has been conducted ...

ژورنال: تحقیقات موتور 2019
Keshavarz, A., Moradi, F., Qasemian, A., Shakeri, A.,

Boiling heat transfer always has been proposed as a solution for enhancing heat transfer between the fluid and solid surfaces. Subcooled flow boiling is one of the mechanisms that occur in Internal Combustion Engine water jacket in which high amounts of heat is transferred. In this research, it has been tried to simulate subcooled flow boiling in a geometry similar to coolant channel inside the...

ژورنال: انرژی ایران 2020

The increasing consumption of energy from fossil fuels on the one hand and the pollution created by it on the other hand has always raised the concern of replacing clean and renewable energy with fossil fuels in the human mind. Generating electricity through clean energy can be a good solution to reduce pollutants and prevent global warming. One of the most available types of renewable energy i...

Journal: :journal of applied and computational mechanics 0
abdolghafoor khademalrasoul ph.d. student of civil engineering, shahrood university of technology, iran. reza naderi department of civil engineering. shahroud university of technology.

in the present research, implementations of different computational geometry technologies in isogeometric analysis framework for computational fracture mechanics are investigated. nurbs and t-splines are two different computational geometry technologies which are studied in this work. among features of b-spline basis functions the possibility of enhancing a b-spline basis with discontinuities b...

Karbandi is a common structural and covering pattern for arched surfaces in Persian architecture, which is rooted in the precise methods of descriptive geometry. These methods, due to their strict geometry, do not have much flexibility and have been used only in specific fields in Iranian architecture. Therefore, the questions arise: what are the limitations and requirements of common drawing m...

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