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This dataset includes large-eddy simulation (LES) output from a convective atmospheric boundary layer (ABL) simulation of observations at the SWIFT tower near Lubbock, Texas on July 4, 2012. The dataset was used to assess the LES models for simulation of canonical convective ABL. The dataset can be used for comparison with other LES and computational fluid dynamics model outputs.
This study implemented validated literature models to predict audible noise due to pressurized gaseous hydrogen releases through a thermally-activated pressure relief device (TPRD) and attached vent stack. A literature survey discovered limited hydrogen-specific noise prediction models validated by experiments. However, empirical noise prediction models for air flowing through pipes and valves were identified. These empirical models were used to predict noise levels and compared against hydrogen noise data reported in two studies: one experimental study of noise from hydrogen leaking through a pipe and another which modeled hydrogen flowing through a solenoid valve during a fuel cell vehicle refueling. The valve flow model was then applied to predict noise for hydrogen releases through a TPRD. Results show that hydrogen releases through a TPRD can produce harmful noise levels varying from 134 to 150 dB. However, further model validation and additional experimental data are needed to improve prediction confidence and accuracy.
Presentation to go with previous IR Request ID: 1780436 for AIAA Aviation 2025 presentation by the same title
Measurements of surface sensible heat flux, momentum flux, wind components, and virtual temperature.
This dataset is used to monitor different atmospheric variables over many levels of the 300-m Boulder Atmospheric Observatory (BAO) tower.
The dataset provides wind, temperature, and turbulence measurements.
These data are for calculating eddy covariance flux measurements.
Measurements of surface sensible heat flux, momentum flux, wind components, and virtual temperature.
Measurements of surface sensible heat flux, momentum flux, wind components, and virtual temperature.
Measurements of surface sensible heat flux, momentum flux, wind components, and virtual temperature.
This dataset provides information for calculating eddy covariance flux measurements.
The dataset provides eddy covariance flux measurements. The turbulent flux data has also been pulled out into daily files.
These data provide eddy covariance flux measurements. The turbulent flux data has also been pulled out into daily files.
The data included features wind, temperature, and turbulence measurements.
The dataset provides wind, temperature, and turbulence measurements.
The data included features wind, temperature, and turbulence measurements.
The data included features wind, temperature, and turbulence measurements.