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 20 for “"temperature predictions"”.
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Improving the Fanger model's thermal comfort predictions for naturally ventilated spaces
… coefficients, to improve its thermal comfort predictions for naturally ventilated spaces. A sensitivity analysis revealed that the comfort temperature prediction is by far most sensitive to the comfort value of mean skin temperature. Furthermore, the sensitivity analysis also indicated that …
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Development of a Thermal Management Methodology for a Front-End DPS Power Supply
… higher power density levels, keeping component temperatures within suitable ranges of their maximum operating limits becomes an increasingly challenging task. This project focuses on thermal management at the system level, using a 1.2 kW front-end power converter as a subject for case study. The …
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Advancing radiative heat transfer modeling in high-temperature liquid-salts
… systems, including fluoride salt-cooled high-temperature reactors (FHRs), molten salt reactors (MSRs), fusion devices, and concentrated solar power plants. The temperature distribution in the coolant salts can be affected by participating media radiative heat transfer, due to the high …
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A First Complete Approach to Address Model Error in Computational Turbulent Heat Transfer
… turbulence modelers believe that error in CFD temperature prediction stems from the simple turbulent heat flux model known as the Reynolds analogy. In particular, the Reynolds analogy is assumed to be inadequate for non-unity Prandtl fluids. However, engineers continue to use the Reynolds …
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Thermal Behavior of the TN-32B Spent Nuclear Fuel Cask under Storage and Vacuum Drying Conditions
… models are developed to predict the temperatures in a spent fuel cask under storage and vacuum drying conditions. In particular, the TN-32 spent nuclear fuel cask was modeled because it is one of the few demonstration casks with publicly available experimental data to validate …
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Stability of nickel-base superalloys for turbine disc applications
… of aero-engines will need to operate at temperatures beyond the capabilities of current nickel-base superalloys. As a result, new alloy compositions for turbine disc applications are being developed. Optimising these alloy compositions requires balancing directly competing requirements. …
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A comparative study of binary synthesis modelling software for neutron star mass estimates
… star is handled, which has some effects on the temperature predictions. We further explored whether the codes converge to the same conclusions when fitting data by considering the system LAMOST J112306.9+400736 using various constraints and comparing to a previous study by Yi et al. (2022) which …
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Modeling the temperature response of small rivers to land cover changes using satellite-based spatial data
… alteration on water quality, including river temperatures, has important ecological implications. However, there is a dearth of information on temperature of rivers smaller than about 60 m wide (approximately fifth order and below), which constitute roughly 97% of total global stream length: …
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Stochastic Data Assimilation Approaches For Magnetic Resonance Temperature Imaging
… proton resonance frequency shift (PRFS) based MR temperature imaging can quantitatively monitor tissue temperature changes. It is widely known that the PRFS technique is easily perturbed by tissue motion, tissue susceptibility changes, magnetic field drift, and modality–dependent applicator …
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A 3-Dimensional Computer Simulation Model for Temperature Distribution Prediction in a Seafood Shipping Container
… of insulation and coolant quantities on temperature distribution within a seafood shipping container and packaging cost. A three-dimensional transient heat transfer model was developed to predict the temperature distribution in a fish shipping container. The finite element method was used …
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Investigation of thermally induced stresses in a transition-piece in relation to an aero-derivative gas turbine engine operation
… gas turbine engine transfers high temperature combusted gases from the gas generator to a power turbine, and it is manufactured from Iron-Base Superalloy A286 in this investigation. Due to the thermal stress levels developed in the casing of the transition-piece after long operating …
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Development of a general purpose subgrid wall boiling model from improved physical understanding for use in computational fluid dynamics
… mechanisms required to accurately predict the temperature and heat flux for subcooled flow boiling in CFD simulations. The model was developed using an experimentally based mechanistic approach, where the goal was to accurately capture all physical phenomena that affect heat transfer and occur …
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Hypolimnetic Oxygenation: Coupling Bubble-Plume and Reservoir Models
… well for two of the three diffuser tests. Temperature predictions deviated from measured profiles near the maximum plume rise height, but predicted dissolved oxygen profiles compared very well to observations. Oxygen transfer within the hypolimnion was independent of all parameters except …
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Quantification of the Fire Thermal Boundary Condition
… heat transfer coefficient, adiabatic surface temperature, and the separated components of radiative and convective heat flux. Experiments were performed in a cone calorimeter with the hybrid gage flush mounted into UNIFRAX Duraboard LD ceramic board. The results were then compared to results …
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Geospatial Analysis of the Global Supply Chain and Transportation Infrastructure Considering Extreme Weather, Climate, and Sustainable Energy Policies
… hurricanes, and sea level rise. Earth’s rising temperature plays the most significant role in sea level rise. The next step in this research deals with modeling the Earth’s temperatures through autoregressive integrated moving average (ARIMA) model equations. ARIMA modeling allows for cyclical …
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High Fidelity Chemistry And Radiation Modeling For Oxy-Combustion Scenarios
… oxy-methane diffusion flames by comparing their predictions against experimental data. Literature review about chemistry and radiation modeling in oxy-combustion atmospheres considered turbulent systems where the predictions are impacted by the interplay and accuracies of the turbulence, …
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A study on the flow characteristics of an industrial radiant tube burner
… been used, validated with experimental air flow, temperature and flue gas measurements. Initially, the work programme is presented and the theory behind RTB design and operation in addition to the theory behind swirling flows and methane combustion. NOx reduction techniques are discussed and …
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Potamanautes warreni biomarker assays to monitor silver nanomaterial contaminants in aquatic environments
… and environmental factors (temperature, pH, ionic strength, salinity, organic matter). Climate change predictions indicate that the frequency, intensity and duration of extreme natural events (such as temperature elevations) will increase in the future (IPCC, 2001; IPCC, …
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The influence of sediment nutrient dynamics on the response of lake ecosystems to restoration and climate change
… climate has a direct influence on lake water temperature, nutrient loads, phytoplankton abundance and chemistry. However, little is known about the potential effects of future climate change on lake water quality. Understanding the dynamics, abundance and availability of nutrient pools in lake …