Effective dispersion in heterogeneous media under random transient flow conditions

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Transient Fluid Flow in Heterogeneous Porous Media

A stable Alternating Direction Implicit finite-difference algorithm is used to model transient fiuid flow in heterogeneous porous media. In connection with the laboratory system for pressure transient testing of core permeability, the effects of permeability heterogeneities on the characteristics of the pressure transient were investigated. The results show that the early portion of the pressur...

متن کامل

Flow Scheduling in Optical Flow Switching Networks Under Transient Conditions

We study flow scheduling to lightpaths in an optical flow switching network where flow arrivals are modeled as a time dependent Poisson process and their holding times are Pareto distributed. Scheduling decisions are taken at fixed time intervals (larger than 100 ms) in a central node and scheduled flows cannot be interrupted before their completion. The scheduling problem is represented as a d...

متن کامل

Effective two-phase flow in heterogeneous media under temporal pressure fluctuations

[1] We study the combined effect of spatial heterogeneity and temporal pressure fluctuations on the dispersion of the saturation of a displacing fluid during injection into an immiscible one. In a stochastic modeling framework, we define two different dispersion quantities, one which measures the front uncertainty due to temporal pressure fluctuations and another one which quantifies the actual...

متن کامل

Random heterogeneous media: Hicrosttucture and improwed bounds on effective properties

The purpose of the present article is to review recent advances made in the determination and calculation of improved bounds on the effective properties of random heterogeneous media that depend upon the microstructure via n-point correlation functions. New breakthroughs made in the quantitative characterization of the microstructure of heterogeneous materials are also reviewed. The following f...

متن کامل

Colloid mobilization and transport within unsaturated porous media under transient-flow conditions

[1] Contaminant-scavenging colloids are mobilized in the vadose zone during infiltration events, characterized by transient flow regimes. In the research reported here we develop a mathematical model in order to investigate the influences of flow transients on colloid mobilization in unsaturated media. The model solves coupled equations for unsteady pore water flow, colloid release, advective-d...

متن کامل

ذخیره 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: Water Resources Research

سال: 2003

ISSN: 0043-1397

DOI: 10.1029/2002wr001931