نتایج جستجو برای: dfn model

تعداد نتایج: 2104440  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

به علت وجود عدم قطعیت ها در پارامترهای هندسی ناپیوستگی ها، همواره راه حل واحد و کارآمدی برای ارزیابی پایداری شیب های سنگی درزه دار وجود ندارد. بدین منظور استفاده از روش های احتمالی می تواند مناسب تر تلقی گردد. یکی از روش های احتمالی، استفاده از روش شبکه شکستگی های مجزا- المان گسسته (dfn-dem) است. مدل شبکه شکستگی های مجزا (dfn) بیان واقعی تری از هندسه ناپیوستگی ها را در زمین فراهم می آورد. این م...

Journal: :Energies 2022

This paper reviews the heat transfer model for geothermal reservoirs, fracture network in and numerical of hydraulic fracturing. The first section models, which contain single-porosity model, dual-porosity multi-porosity model; meanwhile mathematical equations porosity are summarized. Then, this introduces reservoirs method computational transfer. In second section, on basis conventional theory...

Journal: :Computers & Mathematics with Applications 2015
Stefano Berrone C. Canuto Sandra Pieraccini Stefano Scialò

We consider flows in fractured media, described by Discrete Fracture Network (DFN) models. We perform an Uncertainty Quantification analysis, assuming the fractures’ transmissivity coefficients to be random variables. Two probability distributions (log-uniform and log-normal) are used within different laws that express the coefficients in terms of a family of independent stochastic variables; t...

1996
A. Pataricza

The widespread use of embedded controllers in dependability-relevant products requires a radical increase both in the productivity and in the quality of the overall design process, thus necessitating the automation and the integration of the functional and diagnostics design processes. Recently, the most e ective system design methodology is hardware-software codesign, supporting a uni ed model...

2004
Helmut Reiser Gereon Volker

A honeynet is a special prepared network which is not used in normal business. It is a kind of playground to watch and learn the tactics of crackers. The only purpose of a honeynet is to be probed, attacked or compromised. During the operation other systems may not be harmed by an attack originated within the honeynet. In this paper the design, realization and operation of a honeynet built with...

Journal: :Journal of Hydrology 2021

Modeling heat transfer in complex heterogeneous fractured system is key for geothermal energy applications. Discrete fracture network (DFN) modeling the classical framework to reproduce advective part of transport, which determined by connectivity and heterogeneity. This approach general sacrifices representation rock matrix, disregarding both its diffusive exchange with fractures effects therm...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...

1999
CLAIRE VOISIN

Fn−k+1H 2n−2k+1(X)∼= F n−k+1A2n−2k+1(X)c dFn−k+1A2n−2k(X) . If (Zt )t∈C is a flat family of codimension k algebraic cycles on X parametrized by a smooth irreducible curve C, the map t → kX(Zt − Z0) factors through a homomorphism from the Jacobian J (C) to J 2k−1(X), and one can show that the image of this morphism is a complex subtorus of J 2k−1(X) whose tangent space is contained in Hk−1,k(X) ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید