Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Ship plume dispersion rates in convective boundary layers for chemistry models
View through CrossRef
Abstract. Detailed ship plume simulations in various convective boundary layer situations have been performed using a Lagrangian Dispersion Model driven by a Large Eddy Simulation Model. The simulations focus on early stage (1–2 h) of plume dispersion regime and take into account the effects of plume rise on dispersion. Results are presented in an attempt to provide to chemical modellers community a realistic description of the impact of characteristic dispersion on exhaust ship plume chemistry. Plume dispersion simulations are used to derive analytical dilution rate functions. Even though results exhibit striking effects of plume rise parameter on dispersion patterns, it is shown that initial buoyancy fluxes at ship stack have minor effect on plume dilution rate. After initial high dispersion regimes a simple characteristic dilution time scale can be used to parameterize the subgrid plume dilution effects in large scale chemistry models. The results show that this parameter is directly related to the typical turn-over time scale of the convective boundary layer.
Title: Ship plume dispersion rates in convective boundary layers for chemistry models
Description:
Abstract.
Detailed ship plume simulations in various convective boundary layer situations have been performed using a Lagrangian Dispersion Model driven by a Large Eddy Simulation Model.
The simulations focus on early stage (1–2 h) of plume dispersion regime and take into account the effects of plume rise on dispersion.
Results are presented in an attempt to provide to chemical modellers community a realistic description of the impact of characteristic dispersion on exhaust ship plume chemistry.
Plume dispersion simulations are used to derive analytical dilution rate functions.
Even though results exhibit striking effects of plume rise parameter on dispersion patterns, it is shown that initial buoyancy fluxes at ship stack have minor effect on plume dilution rate.
After initial high dispersion regimes a simple characteristic dilution time scale can be used to parameterize the subgrid plume dilution effects in large scale chemistry models.
The results show that this parameter is directly related to the typical turn-over time scale of the convective boundary layer.
Related Results
Design and Optimization for Ship Structure Based on Knowledge-Based Engineering
Design and Optimization for Ship Structure Based on Knowledge-Based Engineering
It is always pursued that the excellent ship structure is rapidly designed and modified on the premise of ensuring security in ship engineering. In this paper, design and optimizat...
Flexure Modeling of Plume Ascension on Mars
Flexure Modeling of Plume Ascension on Mars
Near the equator of Mars, between the branched valleys of Noctis Labyrinthus and Valles Marineris, a large rift system, lies a heavily fractured and eroded region, whose tectonic h...
Spatio-temporal aggregation of convective cell clusters in European MCSs
Spatio-temporal aggregation of convective cell clusters in European MCSs
Mesoscale Convective Systems (MCSs) are organized collections of thunderstorms that typically consist of narrow, intense regions of convective precipitation alongside broader, ligh...
Connecting Ship Operation and Architecture in Ship Design Processes
Connecting Ship Operation and Architecture in Ship Design Processes
It is challenging to deal with the operation of ships by crew members in ship design processes. This is important because the efficiency and safety of ship operations ultimately de...
Relating Multi-Scale Plume Detection to Area Emission Estimates in Dense Point Source Emission Fields of Methane
Relating Multi-Scale Plume Detection to Area Emission Estimates in Dense Point Source Emission Fields of Methane
Methodologies for inferring surface emissions of atmospheric trace gases can be categorized into plume detection and area-scale estimation. Plume detections are observations of emi...
Plume-induced heat flux anomalies and the associated thinning of the continental lithosphere
Plume-induced heat flux anomalies and the associated thinning of the continental lithosphere
While the passage of a plume beneath a thin oceanic lithosphere is
usually connected to a hot spot track, and thus can easily be traced
back in time, the interaction between a plum...
A novel model of volcanic plume evolution from high-temperature chemistry to reactive plume chemistry in the atmosphere
A novel model of volcanic plume evolution from high-temperature chemistry to reactive plume chemistry in the atmosphere
The first seconds of the interaction of volcanic gases with the atmosphere have so far often been drastically simplified, e.g., by assuming thermochemical equilibrium. In this peri...
Transmittance and Radiance Computations for Rocket Engine Plume Environments
Transmittance and Radiance Computations for Rocket Engine Plume Environments
Rocket engine exhaust plume is generally thermal in character arising from changes in the internal energy of constituent molecules. Radiation from the plume is attenuated in its pa...