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open access

Heat Transfer Analysis of Bio-Printed Tissue Mimicking Material Mixed with Silver Nanoparticles

Description: Novel tissue mimicking materials have been developed for cancer treatment research. In the present research work, the tissue mimicking material is printed using 3D bioprinting technology. The nanoparticles are homogeneously mixed with tissue mimicking materials to enhance the heating capacity. The thermal conductivity of tissue mimicking materials is measured using a micropipette thermal sensor (MTS). Further, the optimal value is identified based on optimization technique and incorporated into… more
Date: August 2022
Creator: Chandrasegaran, Jedeshkeran
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Development of an Enclosed Evaporation Chamber Utilizing a Fresnel Lens Solar Concentrator

Description: This thesis project investigates the configuration of an enclosed evaporation chamber with the intention of converting seawater into potable freshwater. The evaporation chamber's sole heat source is provided by a Fresnel lens, located above the chamber, which concentrates sunlight onto a 3-inch diameter focal plate built into the core of the chamber. The design of the evaporation chamber is modeled after a solar still and is coupled with a heat exchanger to boost efficiency of the system. The c… more
Date: August 2022
Creator: Planz, Bridger T
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Investigation of Structure-Property Effects on Nanoindentation and Small-Scale Mechanical Testing of Irradiated Additively Manufactured Stainless Steels

Description: Additively manufactured (AM) 316L and 17-4PH stainless steel parts, concretely made by laser powder bed fusion (L-PBF), are characterized and micro-mechanical properties of those steels are analyzed. This study also explored and extended to proton irradiation and small-scale mechanical testing of those materials, to investigate how irradiation affects microstructural evolution and thus mechanical properties at the surface level, which could be detrimental in the long term in nuclear application… more
Date: August 2022
Creator: Uddin, Mohammad Jashim
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Development of an Interpolation-Free Sharp Interface Immersed Boundary Method for General CFD Simulations

Description: Immersed boundary (IB) methods are attractive due to their ability to simulate flow over complex geometries on a simple Cartesian mesh. Unlike conformal grid formulation, the mesh does not need to conform to the shape and orientation of the boundary. This eliminates the need for complex mesh and/or re-meshing in simulations with moving/morphing boundaries, which can be cumbersome and computationally expensive. However, the imposition of boundary conditions in IB methods is not straightforward … more
Date: August 2022
Creator: Kamau, Kingora
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Artificial Neural Network Based Thermal Conductivity Prediction of Propylene Glycol Solutions with Real Time Heat Propagation Approach

Description: Machine learning is fast growing field as it can be applied to solve a large amount of problems. One large subsection of machine learning are artificial neural networks (ANN), these work on pattern recognition and can be trained with data sets of known solutions. The objective of this thesis is to discuss the creation of an ANN capable of classifying differences in propylene glycol concentrations, up to 10%. Utilizing a micro pipette thermal sensor (MTS) it is possible to measure the heat propa… more
Date: August 2022
Creator: Jarrett, Andrew Caleb
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Microgravity Vortex Phase Separator for Liquid Amine CO2 Removal System

Description: The present study investigates vortex phase separator (VPS) technology as a new approach for a liquid amine CO2 removal system. Experimental results obtained using a 99.99% pure CO2 stream and liquid amine with varying concentrations demonstrate the VPS' ability to decrease CO2 volume at its gas outlet. Operating parameters such as CO2 flow rate, relative humidity (RH), and temperature were systematically varied during experimental procedure, as well as working fluid temperature, volume, and fl… more
Date: August 2022
Creator: Sarvadi, Alexander Armstrong
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Design, Fabrication and Testing of a Novel Dual-Axis Automatic Solar Tracker System Using a Fresnel-Lens Solar Concentrator

Description: This thesis project investigates, analyzes, designs, simulates, constructs and tests a dual-axis solar tracker system to track the sun and concentrates the heat of the sunlight, using a Fresnel lens, into a small area, which is above of an evaporator, to increase the temperature of the seawater to convert it into freshwater. The dual-axis solar tracker was designed with the main objectives that the structure was portable, dismountable, lightweight, low cost, corrosion resistant, wires inside pi… more
Date: August 2021
Creator: Almara, Laura Mabel
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Embedded Sensing Textiles for Corrosion Detection

Description: Corrosion in underground and submerged steel pipes is a global problem. Coatings serve as an impermeable barrier or a sacrificial element to the transport of corrosive fluids. When this barrier fails, corrosion in the metal initiates. There is a critical need for sensors at the metal/coating interface as an early alert system. Current options utilize metal sensors, leading to accelerating corrosion. In this dissertation, a non-conductive sensor textile as a viable solution was investigated. For… more
Date: August 2021
Creator: Chowdhury, Tonoy
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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