Fri, Apr 28, 2017 @ 03:00 PM - 04:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Speaker: Calogero Benedetto Rizzo and Mohammed Abdelbarr, Astani CEE Graduate Students
Talk Title: A Systematic Investigation of Hydraulic Connectivity in Heterogeneous Porous Media and its Impact on Transport Dynamics
Abstract: Defining the level of connectivity of heterogeneous porous media is of key importance to understand subsurface flow and transport dynamics. Several studies show that non-Fickian behavior observed in solute spreading in heterogeneous subsurface formations are strictly related to the presence of preferential channels. The presence of these channels control the trajectory of the solute front leading edge of the plume and it is highly correlated to early arrival times. Nevertheless there are multiple metric and frameworks that allow to determine preferential channels and connectivity properties of a complex heterogeneous permeability field. The aim of this work is to understand connectivity properties by using the concept of least resistance path through the use of an efficient algorithm. We explore differences among a range of fields and analyze the factors that significantly affect the connectivity of the field and its impact on transport. The results help to further understand the impact of hydraulic connectivity on solute transport and to establish a criteria for which heterogeneity and preferential channels cannot be neglected.
Talk by Mohamed Abdelbarr
Title: Inexpensive and Contactless Color and Depth Data Fusion for Dynamic Displacement-Field Measurement
Quantitative and accurate measurements concerning the time history of the multi-component deformation field of a distributed system undergoing dynamic response is an important and challenging problem in the broad field of structural dynamics. There are only very limited, and relatively quite expensive, methodologies for obtaining multi component deformations of a displacement of a dynamically deformation field. This study presents an extensive analytical and experimental study to assess, implement, and evaluate the feasibility and performance of a class of inexpensive vision based sensors RGB-D sensors to acquire dynamic measurements of the displacement field of a test structure.
Audiences: Everyone Is Invited
Contact: Evangeline Reyes