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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 45 for “"cold air"”.
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Identifying cold-air damming in the region of the Ozark Plateau
… to determine if the event was the result of cold-air damming occurring in the region. This investigation led to a larger three-phase study on cold-air damming events in the region of the Ozark Plateau. First, the initial phase studies the marquee event of March 2014 and what atmospheric …
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Cold air outbreaks over the Gulf Stream and implications for the North Atlantic Ocean
During Cold Air Outbreak (CAO) events over North America during winter, cold dry air is often advected over the ocean offshore of the East Coast. A motivating hypothesis of this study is that the air-sea fluxes associated with CAO events will be manifested in offshore ocean variations that will be …
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The impact of cold-air damming on precipitation during the South Carolina 2015 flood
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Characteristics and mechanisms of cold air outbreaks in the central and eastern United States
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Assessment of Model Forecast Temperature Bias During Cold Air Damming in the Central Appalachian Mountains
Cold-air damming (CAD) is a prevalent Mid-Atlantic United States weather phenomenon that occurs when cold, dense air is dammed alongside the eastern slopes of the Appalachian Mountains. Lower-than-normal maximum temperatures, increased and prolonged cloud cover, and precipitation that produces …
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Numerical model for analysis and control of the quality of bulk-stored grain using cold air
… This is achieved by first establishing the air flow distribution in the grain, and then solving the equations that govern heat and moisture transfer. It is believed that this represents an advance on models previously available. In addition to the physical phenomena, the model accounts for …
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Physiological and Perceived Psychological Responses of Collegiate Football Athletes to Ventilated Shoulder Pads During a Scrimmage
… of this study was to assess the effect of cold air ventilated shoulder pads on core temperature and perceived exertion in football athletes during a scrimmage. METHODS: Eight football athletes were randomly divided into two groups, one receiving cold air ventilation (v) and the other …
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Modellierung von Flächendatensätzen der Oberflächentemperatur, Strahlungsbilanz und Kaltluftproduktion in windschwachen Strahlungsnächten
… of surface temperature, net radiation and cold air production obtained on cloudless nights. The method is tested on the region of the Regio-Klima-Projekt (REKLIP) which covers the Upper Rhine Valley from Basle to Karlsruhe and the adjacent mountains. <br>The approach for this method is …
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Internal flow investigation of an aft finocyl grain configuration in a solid rocket motor
Cold-flow tests were conducted in mediums of air and water to investigate the internal flow field about the nozzle region of a proposed solid rocket motor (SRM) configuration that would potentially replace the current external boosters on NASA's Space Shuttle. One-eighth-scale clear acrylic models …
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Effect of inlet configurations on the aerodynamics of swirl combustors
… and turbulence measurements were made in a cold air flow rig. Mean velocity measurements were made using a five hole Pitot probe and turbulence measurements were obtained from a hot wire anemometer. All the flow visualization tests were made with Reynold's number between 10,000 and 47,500, …
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Control scheme for cathode airflow during load swings in a solid oxide fuel cell/gas turbine system
Control and management of cathode airflow in a solid oxide fuel cell gas turbine hybrid power system was analyzed using the Hybrid Performance (HyPer) hardware simulation at the National Energy Technology Laboratory (NETL), U.S. Department of Energy. This work delves into previously unexplored …
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Assessment of shaped film cooling holes at high density ratios for gas turbine cooling using S-PIV and PSP.
During film-hole cooling, relatively cold air is extracted from the compressor of a gas turbine engine and forced through the turbine airfoils in order to lower their surface temperatures. To investigate the effects of various film cooling hole geometries on film-cooling hole performance, shaped …
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SYNOPTIC PATTERNS ASSOCIATED WITH NORTHEAST AND South east ice Storms
… deep isothermal regions where warm, moist air over-runs surface sub-freezing air. Much attention has been focused on Northeast ice storms, where a study by Cortinas et al. (2004) identified the Northeast as the region with the highest spatial distribution of freezing rain and ice pellets. …
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Engineering Winter
… and operating within narrowing windows of cold air. What emerges is a portrait of winter in transition: less predictable, more expensive, increasingly manufactured. The efforts to preserve winter recreation carry growing costs in energy, water, and equitable access. Many smaller, …
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Forecasting the nighttime evolution of radio wave ducting in complex terrain using the MM5 numerical weather model
… the mountainous, desert terrain near Nellis Air Force Base in Nevada for five forecast periods during the summer and fall of 2002. The extent of ducting regions predicted by the model and the mechanisms that result in the development of those regions are examined. The sensitivity of model …
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THE EFFECT OF SYNOPTIC SCALE WEATHER AND TOPOGRAPHY ON ROAD SURFACE TEMPERATURES IN DEVON
… Results indicate valleys to be relative cold spots in clear conditions, and high altitude stations are cold spots during cloudy conditions. A separate case study during the cold spell of February 1991 reinforced the conclusion and extended these views county wide. Coastal stations with …
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Cavity ring down and thermal lens techniques applied to vibrational spectroscopy of gases and liquids.
… been used to measure the temperature of flowing air in an open optical cavity. This sensor could be a convenient method for measuring the temperature at the input (cold air) and output (hot air) after cooling the blades of a gas turbine. The results could contribute to improvements in turbine …
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Economic performance of modularized hot-aisle contained datacenter PODs utilizing horizontal airflow cooling
… system for component cooling. Heated exhaust air exits the equipment and travels upward to warm return plenum structures for subsequent capture and re-cooling. This floor-to-ceiling airflow behavior represents a vertical airflow-cooling paradigm. The resulting airflow may travel 150 feet or …
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Assessing surface and underground cooling methods, coupled to efficient ventilation systems to improve the climatic conditions in deep and hot mines
… & safety, and productivity in underground mines. Cold air is primarily achieved by ventilation up to a critical depth from where further cooling must be provided by cooling systems, which can either be located on the surface or underground. Three major strategies that can be applied when it comes …
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Examining the feasibility of a novel ground-storage cooling system
The Boston climate is known for its long, cold winters but it also suffers from hot, humid summers. The dehumidification needed to maintain occupant comfort in summer is often provided by condensing the excess moisture onto surfaces cooled by cold water. The systems currently used to provide the …
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