Results 131 to 140 of about 58,998 (325)
Turbofan noise generation. Volume 2: Computer programs [PDF]
The use of a package of computer programs developed to calculate the in duct acoustic mods excited by a fan/stator stage operating at subsonic tip speed is described.
Mark, W. D. +2 more
core +1 more source
On the β$$ \beta $$‐effect in the baroclinic instability of a continuously stratified atmosphere
Quarterly Journal of the Royal Meteorological Society, EarlyView.We solve the quasi‐geostrophic equation numerically to analyze baroclinic instability in a continuously stratified atmosphere. On the β$$ \beta $$‐plane, deviations from classical models alter instability growth rates and modal structures, leading to the emergence of unstable lobes and a stable region at very large wavelengths.
Juan Vázquez Portillo, Antonio Segalini
wiley +1 more source
Applied SciencesThis study investigates the numerical modeling of a high-velocity circular free-water jet impinging into a plunge pool, focusing on the simulation and validation of mean and fluctuating dynamic pressures on the pool floor.
António Muralha +2 more
doaj +1 more source
A study of a free convective boundary layer using a parcel‐based Lagrangian model
Quarterly Journal of the Royal Meteorological Society, EarlyView.We study the development of a convective boundary layer forced by surface heating and growing into a stably stratified atmosphere above. We compare our results with several recent comprehensive direct numerical simulation (DNS) studies and find broad agreement, and often close quantitative agreement, despite fundamental differences in the numerical ...
Samuel Wallace +3 more
wiley +1 more source
The stratospheric gravity wave field produced by a supercell
Quarterly Journal of the Royal Meteorological Society, EarlyView.Supercells are a class of long‐lasting thunderstorms with rotating updrafts that often cause severe weather, hail, and tornadoes. This study uses numerical simulations to characterize the stratospheric gravity waves that are caused by these storms.
David S. Nolan, Yi Dai
wiley +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.An Iberia‐Central Mediterranean trough sequence (7–10 February 2018) delivers anomalous low‐level temperature tendencies attributable to dynamics across most of northern Africa, with warming over northeastern Africa, especially 10–12 February into the eastern Sahel. An ECMWF product attributes the tendencies (see Figure).
Neil Ward +3 more
wiley +1 more source
Impact of small‐scale gravity waves on tracer transport
Quarterly Journal of the Royal Meteorological Society, EarlyView.We extend a gravity wave (GW) parametrization to calculate the tracer transport due to the GW–Stokes drift and next‐order effects, where the approach is validated by comparing coarse‐resolution simulations with parametrized GWs to high‐resolution, wave‐resolving reference simulations.
Irmgard Knop +2 more
wiley +1 more source
Ameliorating a vertical axis wind turbine performance utilizing a time-varying force plasma actuator
Scientific ReportsControlling wind flow on vertical axis wind turbine blades is an effective technique for enhancing their performance. Modern equipment such as plasma actuators have gained significant attention for their ability to control, and improve the flow behavior ...
Sarallah Abbasi, Mohammad Amin Daraee
doaj +1 more source
Advanced Quantum Technologies, EarlyView.Quantum algorithms for differential equations are developed with applications in computational fluid dynamics. The methods follow an iterative simulation framework, implementing Jacobi and Gauss–Seidel schemes on quantum registers through linear combinations of unitaries.
Chelsea A. Williams +4 more
wiley +1 more source
Impacts of a Century‐Old Urban Dam on Water Quality and Habitat Composition, Flint River, Flint, MI
River Research and Applications, EarlyView.ABSTRACT Dams significantly influence river ecosystems worldwide, fragmenting habitats, altering sediment transport, and reducing biodiversity. Urban rivers are especially vulnerable, where dams compound stressors such as channelization, pollution, and degraded riparian zones. In response, dam removals are a growing restoration tool globally.
Chloe J. Summers, Heather A. Dawson
wiley +1 more source