Browsing by Author "Nakshatrala, Kalyana Babu"
Now showing items 1-20 of 20
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Aqueous-Based Processes for Enhanced Dissolution and Displacement/Removal of NAPLs
Saladi, Krishna Rishi Vijay; 0000-0003-1301-3663 (August 201)This dissertation addresses the aqueous-based processes associated with alcohol fuel releases and treatment of hydrocarbon impacted soils. It is comprised of two parts. In Part A, the effects of alcohols (methanol, ethanol, ... -
Atomistic Study of Fracture and Deformation Mechanisms in Nanotwinned FCC Metals
Sinha, Tanushree (August 201)Nanotwinned metals have opened up exciting avenues for the design of high-strength, high-ductility materials owing to the extraordinary properties of twin boundaries. This dissertation presents insights into the deformation ... -
Atomistic Study of Grain Boundary Sliding
Sarangi, Rutuparna 1983- (2013-05)Creep is the time-dependent mechanical plastic deformation at high temperatures (usually higher than half of the melting temperature) and stresses far below the yield stress. In both the creep deformation and damage, grain ... -
Characterization of a New Vegetable Oil Based Ester Drilling Fluid
Vijendra Prasad, Rashmi (August 201)This thesis presents a novel base fluid material for synthetic based drilling fluid systems. The proposed vegetable oil based ester material is biodegradable in both aerobic and anaerobic conditions as shown by the plate ... -
Characterizing and Modeling of Silicate Modified Smart Cements, Smart Cement Grouts and Drilling Muds
Ali, Md. Kausar (December 2)In this study, the effects of silicate based additives on the smart cements, smart cements grouts and drilling muds were investigated. Also the effects of clay soil contamination on the modified smart cement were investigated. ... -
Characterizing and Modeling the Dynamic Responses, Gas Leakage and Contaminations on the Behavior of the Smart Cement Composite
Amani, Niousha (December 2)Cement composites are one of the most durable construction materials, which can be used in different structures. Monitoring the behavior of the cementitious structures is critical during the construction and the entire ... -
CHARACTERIZING AND TESTING OF MODIFIED OIL WELL CEMENTS, PIPE JOINTS AND MANHOLE COATING
Ravichandran, Saravanan 1986- (2013-05)Some of the challenges in maintaining the onshore and offshore infrastructures are in monitoring the performance of cementitious materials used in construction and the performance of joints in the storm water pipelines and ... -
Characterizing the Behavior of Smart Oil Well Cement for Enhancing the Monitoring of Cement Sheath Integrity
Heidari, Mehrzad (August 201)Oil well cementing is one of the most important and yet complex steps of a drilling project. One of the challenges in maintaining the well integrity is in monitoring the performance of oil well cement (OWC) used in the ... -
CONSTITUTIVE MODELING AND NUMERICAL IMPLEMENTATION OF BRITTLE AND DUCTILE MATERIAL BEHAVIOR WITH THE AID OF INELASTIC XFEM AND DAMAGE-PLASTICITY MODELS
Beizaee, Shahriyar 1985- (2013-12)Constitutive equations establish the relationship between kinetic with kinematic quantities to characterize the specific properties of the material. Mechanical constitutive relations are formulated to describe nonlinear ... -
Finite Element Analysis of FRP-to-Steel Bonded Joints with Various Non-Linear Traction Separation Laws
Berka, Vladimir M. (May 2018)This thesis presents the findings of a parametric study using a finite element analysis to investigate the influences of various traction-separation relationships on the behavior of FRP-to-steel double-lap shear coupons ... -
Interface Fracture in Masonry Composites: A Lattice Approach
Mohammadipour, Amir H.; 0000-0003-4926-9839 (2015-08)The brick-mortar bond or interface is often the weakest link in the masonry composites. The localization of fracture processes at this bi-material interface plays an important role in the failure of this assemblage. These ... -
Modeling the Behavior of Smart Oil Well Cements and Offshore Pipe-Soil Interaction in Very Soft Soil
Kheiri, Pooya (2014-12)It is critical to ensure the durability of the oil and gas production infrastructures from borehole to pipelines. Rheology properties and hardening characteristics are some of the important parameters for cementing slurry ... -
Modification to Darcy Model for High Pressure and High Velocity Applications and Associated Mixed Finite Element Formulations
Chang, Justin 1988- (2013-05)The Darcy model is based on a plethora of assumptions. One of the most important assumptions is that the Darcy model assumes the drag coefficient to be constant. However, there is irrefutable experimental evidence that ... -
Nonlinear Finite Element Analysis with 2D Lattice Models
Isidienu, Brendan (December 2)Linear elastic models are often sufficient in the engineering design of structural and mechanical systems. Given that the yield capacity of the material is not reached or exceeded one finds a reasonable design. However, ... -
On Enforcing Maximum Principles and Element-Wise Species Balance for Advective-Diffusive-Reactive Systems
Mudunuru, Maruti Kumar; 0000-0002-2158-7723 (2015-08)This dissertation aims at developing robust numerical methodologies to solve advective-diffusive-reactive systems that provide accurate and physical solutions for a wide range of input data (e.g., Péclet and Damköhler ... -
Resistivity Characterization and Modeling of Synthetic Based Drilling Fluids and Corrosion Detection in Steel
Pan, Dongmei (December 2)With deeper drilling concern (high in situ pressure and temperature) and increased environmental concerns, there is interest in developing synthetic based drilling fluids. In this study, synthetic based drilling fluids ... -
Theoretical and Computational Study of Flow through Porous Media with Double Porosity/Permeability
Seyed Joodat, Seyedeh Hanie; 0000-0002-5999-413X (August 201)Flow of incompressible fluids through porous media plays a crucial role in many technological applications such as enhanced oil recovery and geological carbon-dioxide sequestration. Numerous natural and synthetic porous ... -
Theoretical and Numerical Study in Porous Media: Solution Verification and Viscous Fingering Instability
Shabouei, Mohammad; 0000-0002-5478-546X (August 201)The central objective of this dissertation is to develop predictive mathematical and numerical tools for modeling flow and transport in porous media. Specifically, the dissertation presents mathematical models for coupling ... -
Variational Formulation of Charged Curves Confined to a Sphere
Chaurasia, Vikash (August 201)In biological structures, charged proteins that are constrained to a surface are ubiquitously encountered. These proteins interact among each other to main- tain their shapes and drive the functionality of the overall ... -
WELLBORE INTEGRITY: MODIFYING AND CHARACTERIZING OIL WELL CEMENT TO ENHANCE WELLBORE LOGGING AND PREVENT PERFORATING DAMAGES IN HYDRAULIC FRACTURED WELLS
Zomorrodian, Mohammadamin Amin (2014-12)Oil well cementing is considered as one of the foremost important and challenging operations in drilling. The main purpose of cement in wellbores is to provide zonal isolation, and support for casing. Properties of oil ...