نتایج جستجو برای: shape factor

تعداد نتایج: 1023669  

Journal: :Water 2023

Hydraulic conductivity is an essential parameter for groundwater investigation and management. A simple technique determining the hydraulic of aquifers slug test, which consists measuring water level in a well after sudden removal or injection small amount water. The interpretation test based on geometry-dependent shape factor, various empirical relationships approximate solutions have been pro...

Journal: :Journal of Thermophysics and Heat Transfer 2005

2014
S. A. Kantoush

The trap efficiency of a shallow reservoir depends on the characteristics of the inflowing sediments and the retention time of the water in the reservoir, which in turn are controlled by the reservoir geometry. With the purpose of controlling the trapped and flushed sediments in shallow reservoirs, the effects of the geometry on sediment deposition and removal were investigated with systematic ...

Journal: :IEEJ Transactions on Power and Energy 1983

Journal: :فیزیک زمین و فضا 0
علیرضا حاجیان عضو هیئت علمی دانشکده علوم پایه دانشگاه آزاد واحد نجف آباد حسین زمردیان عضو هیئت علمی دانشگاه آزاد اسلامی واحد علوم وتحقیقات

in common classical methods of cavity depth estimation through microgravity data, usually when a pre-geometrical model is considered for the cavity shape, the simple geometrical models of sphere, vertical cylinder and horizontal cylinder are commonly used. it is obviously an important fact that in real conditions the shapes of the cavities are not exactly sphere, horizontal cylinder or vertical...

F Farhadzadeh M Salmani Tehrani M Tajdari,

The current paper primarily aims to suggest a mathematical model for the shape-dependent term of Khan- Liu (KL) Yield/ fracture criterion as a function of Plastic Strain for DP590 steel alloy. The shape-dependent term in the mention criterion can generalize the application of this criterion in order to predict the behavior of other materials. Plane stress case and the first quarter of the stres...

Journal: :international journal of advanced design and manufacturing technology 0
sadegh rahmati ali khani

in this paper, multi-stage optimum design of composite pressure vessels is presented. the design variables for composite vessels include the head shape, the winding angle, the layer thickness, the number of layers, and the stacking sequence. a parameter called modified shape factor is introduced as an objective function. this parameter takes into account the effects of the internal pressure and...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده کشاورزی 1392

در این مطالعه ژنومی متشکل از 10 کروموزوم هر یک به طول 200 سانتی¬مورگان شبیه¬سازی شد. نشانگرها بر روی ژنوم با فواصل 2/0 سانتی¬مورگان طراحی شدند و جایگاه‏های ژنی مؤثر بر صفات بر روی ژنوم با توزیع تصادفی و تعداد متغیر شبیه¬سازی شدند و تنها اثرات افزایشی ژنها در نظر گرفته ¬شد. در ابتدا جمعیت پایه¬ای از حیوانات با اندازه مؤثر 100 (50 نر و 50 ماده) شبیه¬سازی شد و این ساختار جمعیتی برای 50 نسل با آمیز...

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