Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 23 for “"erosion model"”.
-
Modeling Best Management Practices on Flow and Sediment using the Rangeland Hydrology and Erosion Model
… in order to help mitigate negative effects of erosion and sedimentation on soil vegetation productivity and water quality. This study used the Rangeland Hydrology and Erosion Model (RHEM) to evaluate best management practices in the estimation of runoff and sediment yield on the Ash Creek …
-
Evaluation of Best Management Practices for Bladed Skid Trail Erosion Control and Determination of Erosion Model Accuracy and Applicability
… the majority of sediment is produced from erosion on highly disturbed areas, such as skid trails, haul roads, and log landings. Erosion from silvicultural activities not only has the potential to introduce sediment into waterways but can also decrease site productivity through the removal …
-
Modellierung und Prognose der Erosion feiner Sedimente
Predicting erosion of fine, cohesive sediments is an important task within sustainable management of water-bodies. This is above all due to the fact, that these sediments tend to bind pollutants which are re-suspended in the case of erosion. The given work deals with this subject in two parts, …
-
Modeling Soil Erosion in the Upper Green River, KY
Off-site soil erosion has tremendous impacts on the present state of most river systems throughout the United States, contributing sediments to channels mainly as nonpoint pollution resulting from land-use and agricultural practices and leading to sedimentation downstream and downwind, a decrease …
-
An analytical parameter study on the erosion of turbine blades subjected to flow containing particulates
The erosion damage to stator and rotor blades associated with flow containing particulates in turbines is investigated. The main parameters studied are blade leading edge thickness, blade turning angle, turbine inlet temperature, particle size, and particle densities. The computer programs used in …
-
Biogeomorphic processes and archaeological site formation in Absaroka Mountains of northwestern Wyoming
… potentially resulting from gopher activity. Erosion from pocket gopher mounds was evaluated by comparing the sediment characteristics of active and abandoned burrows and using a GIS-based erosion model. Results show pocket gopher burrows occur most frequently on north facing slopes. Neither …
-
Geomorphic modeling and routing improvements for GIS-based watershed assessment in arid regions.
Watershed models have two significant shortcomings that limit their application to management problems in arid and semi-arid regions. The first is that the performance of event-based hydrologic models for ephemeral stream networks declines significantly as watershed size increases. The second is …
-
Applying the RUSLE and SEDD Equations to an Agricultural Watershed in Southwest Virginia - A Case Study in Sediment Yield Estimation Using GIS
The goal of this study is to develop a model using GIS to estimate the source and quantity of accumulated sediment in the Emory & Henry College (EHC) duck pond. Located in the Highlands of Southwest Virginia, the 1,194 acre duck pond watershed consists primarily of agricultural, forested, and low …
-
Predictive Disintegration Process Modelling of Immediate Release Tablets Using Terahertz Technology
… (THz) characterisation and physics-informed modelling. This model aims to reduce reliance on labour-intensive, large-scale DoE within PAT and QbD frameworks, thereby saving resources and minimising chemical waste. Terahertz Pulsed Imaging (TPI) is employed to investigate the advancing liquid …
-
The use of laboratory erosion tests for the prediction of wear in pneumatic conveyor bends
… of investigating means of using a laboratory erosion tester to predict the life of a bend in a pneumatic conveyor. Providing a link between a laboratory erosion tester and erosion tests on a pneumatic conveyor would lead to the development of an inexpensive way of predicting the life of a pipe …
-
Areal Modeling of Erosion for Environmental Nonpoint Applications (AMEENA)
Erosion and sediment delivery from upland areas to waterbodies is a major problem impacting water quality in the United States and elsewhere. Measures to reduce these impacts are either targeted at reducing erosion on-site or at reducing delivery of sediment to waterbodies. AMEENA (Areal Modeling …
-
Fog Cooling, Wet Compression and Droplet Dynamics In Gas Turbine Compressors
… in wet compression theory and prediction model are required. The objective of this research is to improve existing wet compression theory and associated models to accurately predict the compressor and the entire gas turbine system performance for the application of gas turbine inlet fog …
-
Effects of Two-Phase Flow in a Multistage Centrifugal Compressor
… compressor was analyzed using CFD. The CFD model accounted for real gas behavior of the vapor phase. Novel user defined routines were implemented to ensure accurate calculations of interphase heat, mass and momentum transfer terms and to model droplet impact on the compressor surfaces. An …
-
Reconstruction of multiple climate variables at high spatiotemporal resolution based on Big Earth data platform
… required for environmental monitoring and modelling do not cover the study area. In addition, climate model reanalysis datasets suffer from coarse spatio-temporal resolutions, which fails to capture the complex variability of climate at fine scales. This thesis mainly reconstructed four …
-
The interaction of climate, tectonics, and topography in the Olympic Mountains of Washington State: the influence of erosion on tectonic steady-state and the synthesis of the alpine glacial history
… the influence of glaciers on spatially variable erosion and rock uplift rates. As glaciers have long been present on the peninsula, could glacial erosion explain the observed pattern of rock uplift? A numerical model of glacial flow, ICE Cascade, is used to reconstruct the glacial extent of the …
-
Modelling near-bank flow hydraulics
River bank erosion models are a fundamental requirement for understanding the migration and evolution of river meanders, estimating the potential for land-loss and threat to floodplain infrastructure, and predicting the delivery of contaminated floodplain sediments to aquatic ecosystems. While …
-
Einfluss des Elektrodenabbrandes auf das Schaltverhalten eines SF 6-Selbstblasschalters
… self blast circuit breakers. For that purpose a model breaker arrangement is developed to reproduce the behaviour of a self blast circuit breaker. For testing the model breaker arrangement with current densities of real circuit breakers, an appropriate test setup is designed. The investigation …
-
Soil Erosion and Modeling Following Closure Best Management Practices for Bladed Skid Trails in the Ridge and Valley Region
… operations. Roads and skid trail surfaces have erosion rates that are greater than the harvest area. Forestry best management practices (BMPs) have been developed to minimize erosion on skid trails, but few projects have compared the effectiveness of different BMPs for bladed skid trails in the …
-
Advancements for the Numerical Simulation of Free Fall Penetrometers and the Analysis of Wind Erosion of Sands
… infrastructure will be subjected to increased erosion and scouring, endangering the people they are meant to protect. Understanding soil dynamics and fluid interaction is crucial to predict the effects of sand erosion. In particular, the study of wind erosion of sands in coastal dunes is …
-
Constraining tectonic and climatic controls on glacial/postglacial landscape evolution using numerical modeling
… fluvial processes. During cold glacial periods, erosion and deposition by ice sheets and glaciers has left a clear imprint on Earth’s surface, creating unique landforms such as flat till plains, wide U-shaped valleys, steep mountain peaks, and deep fjords. As the climate transitioned into warm …
Page 1 of 2