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.
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Showing 1 to 20 of 28 for “"anti-icing"”.
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Evaluation of the Impact of Anti-Icing Solution on Concrete Durability
… and infrastructure damage. The process of anti-icing works through the application of the liquid anti-icing brine to the dry pavement surface prior to a storm event to prevent the formation or development of bonded snow and ice. The proactive anti-icing strategy provides a 34% reduction in …
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Numerical Modeling of Anti-Icing Using an Array of Heated Synthetic Jets
<p>A novel approach to icing control using an array of thermally activated synthetic jet actuators (SJAs) embedded in a wedge surface subject to a super-cooled flow is investigated numerically. The effects of SJA actuation with and without jet heating on ice accretion are studied using the …
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Aircraft Anti-Icing Analysis: Water Droplet Dynamics Under High-Frequency Atomization and Superhydrophobic Effects
Structural icing is a significant engineering challenge that has prompted extensive research into thermal and mechanical preventive measures. Common solutions involve the spraying of de-icing chemicals and high-power consumption heating systems for larger aircraft that add to the weight. Still, …
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Evaluation of the environmental impacts and alternative technologies of deicing/anti-icing operations at airports
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Investigating Droplet Impact Dynamics on Engineered Surfaces: Effects of Roughness, Wettability, and Prospects for Anti-Icing Applications
… surfaces start to lose their water-repellent and anti-icing properties, providing valuable insights into how to enhance material durability. The work also developed a custom-built Supercooled Box Device to simulate extreme freezing conditions, such as freezing rain, and test surface performance in …
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Interfacial engineering to control phase transitions : applications in icing and mineral scale fouling
Icing and scale fouling affect the functioning of a number of industries. The problems due to ice accretion have been prevalent for decades in a number of systems including aircrafts, wind turbines and power lines. Similarly, scale formation is one of the major problems that currently plague a …
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Additively Manufactured Bioinspired Microstructures for Active Surface Modification
… such as liquid transport, self-cleaning, and anti-icing. However, the controllability of these microstructures remains an area requiring further exploration. This research explores the design, fabrication, and active control of 3D-printed bioinspired microstructures for dynamic wettability …
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Condensation heat flux measurements in ambient conditions on superhydrophobic nanostructured surfaces
… surfaces to enhance heat transfer, desalination, anti-icing and self-cleaning. Recently, superhydrophobic coatings have gathered attention with jumping droplets with the potential for self-cleaning applications and spot cooling on high powered applications. With new coatings being used on …
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Fabrication of natural and magnetic slippery surfaces
… reducing food waste, aircraft and powerlines deicing, and hemocompatable implants. However, most LIPS are made of toxic fluorocarbon materials. In this work, in order to eschew toxic fluorocarbon materials, we designed several LIPS made from natural hemp products. The first is an all-natural …
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Active lubricant-impregnated surfaces
… applications ranging from micro-fluidic devices, anti-icing, drop-wise condensation and biomedical devices, however most of the time droplets are moved passively. The use of active external fields has been explored via electric, acoustic and vibrational fields, yet moving highly conductive and …
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Enhanced coalescence-induced jumping droplet departure
… has been demonstrated to enhance heat transfer, anti-icing, and self-cleaning efficiency, and is governed by the theoretical inertial-capillary scaled jumping speed (U). When two droplets coalesce, the experimentally measured jumping speed (U_exp) is fundamentally limited by the internal fluid …
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Progress Toward Durable Icephobic Materials
… applications where surfaces experience repeated icing or freeze-thaw cycles, mechanical abrasion, and particulate erosion. The present thesis explores methods of improving the durability of state-of-the-art icephobic materials in order to make them more suitable solutions to ‘the icing problem.’ …
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Development of improved aircraft de-icing fluids
… as improved thickening agents of aircraft de-/anti-icing fluids is investigated. Current fluid thickeners commonly comprise PAA homo or co polymers and two examples are investigated in terms of their structure, characteristics, size and the rheological profile as aqueous and solutions in a …
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Finite Element Modeling of Macro Fiber Composite Actuators with Application to Wing De-icing
<p>Icing can have a profound impact on aircraft performance during inclement weather conditions. Aircraft icing primarily occurs on the leading edge of wings, tails and engines. The de-icing/anti-icing technologies currently in use are typically bulky, heavy, cover the entire airfoil surface and …
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Droplet Impact on a Solid Surface: Analytical Modeling and Experimentation for Spreading Phase
… demands, for example, reducing contact time for anti-icing purposes. However, no attempts to date have been conducted to restore symmetry from asymmetric spreading, such as spreading over an inclined or moving surface, where tangential velocity naturally breaks the symmetry. To address these …
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Vibrating lubricant-infused porous surface for enhanced liquid droplet transport
… using SLIPS to achieve complex fluids handling, anti-fouling, self-cleaning, anti-icing, and enhanced condensation heat transfer. In recent studies of droplet dynamics on SLIPS, it was observed that a moving droplet on the lubricant film follows lubrication theory and the Landau-Levich law — …
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Exploiting Interfacial Phenomena to Expel Matter from its Substrate
… the physics of several dewetting and/or deicing mechanisms are yet to be fully understood. Even though we know how jumping-droplet condensation offers significantly better heat transfer performance than regular dropwise condensation and can liberate foreign particles, fundamental questions …
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Technoeconomic Analysis of Textured Surfaces for Improved Condenser Performance in Thermoelectric Power Plants
… fouling reduction, corrosion resistance, anti-fogging, anti-icing, and condensation enhancement. Integrating these properties, nonwetting surfaces have shown significant potential in improving the efficiency of energy applications. The first part of the thesis work aims at developing a …
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On the Physics of Ice Nucleation and Growth in Nanoscale
… of natural phenomena and rational design of anti-icing systems for aviation, wind energy and infrastructures.
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Enhanced phase change heat transfer through advanced fabrication techniques
… including self-cleaning, thermal diodes, anti-icing, vapor chambers, electrostatic energy harvesting, and condensation heat transfer enhancement. In addition to enhanced heat transfer applications due to condensation, researchers have also investigated superhydrophobicity itself using …
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