On the size and shape of condensing steam jets and plumes
Abstract
Droplet-laden cloud dynamics emerge from coupled phase transitions and turbulent mixing. Combining experiments and mean-field theory, we establish scaling laws for steam-injected clouds in unsaturated air seeded with condensation nuclei. Depending on whether the cloud is confined to the initial momentum-dominated zone of the jet or extends into the buoyancy-dominated plume, two asymptotic regimes arise. In the momentum regime, cloud dimensions scale with the injector radius. In the buoyancy regime, size follows a ṁ2/5 scaling, where ṁ is the injected steam mass flow rate. Assuming inter-droplet air remains humidity-saturated, our mean-field analysis predicts cloud persistence governed by enthalpy and humidity mixing. These findings bridge microphysical processes and macroscale dynamics, offering a quantitative framework for atmospheric cloud evolution.
Versions
Related
- Advancing Spatial Pattern Integration in Species Distribution Modelling With Computer Vision: How Grain Size and Extent Concepts Shape Predictions of Emerging Aquatic Insects
- Mapping ammonia emission plumes using shortwave infrared imaging spectroscopy
- Unlocking the potential: multi-task deep learning for spaceborne quantitative monitoring of fugitive methane plumes
- Stable Sediment Plumes Despite Tidewater Glacier Retreat in a South Greenland Fjord
- Morphology, interactions, and evolution of laminar thermal plumes revealed by time-resolved volumetric velocity measurements and analysis: Application to Earth's mantle
BibTeX
@misc{fourcade2026size,
title = {{On the size and shape of condensing steam jets and plumes}},
author = {N. Fourcade and F. Poydenot and P. Langlois and F. Barbe and N. Sinnathamby and P. Claudin and B. Andreotti},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.14787},
eprint = {2609.14787},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.14787},
}
RIS
TY - UNPB
TI - On the size and shape of condensing steam jets and plumes
AU - N. Fourcade
AU - F. Poydenot
AU - P. Langlois
AU - F. Barbe
AU - N. Sinnathamby
AU - P. Claudin
AU - B. Andreotti
PY - 2026
DA - 2026/09/13
PB - arXiv
DO - 10.48550/arxiv.2609.14787
UR - https://arxiv.org/abs/2609.14787
AB - Droplet-laden cloud dynamics emerge from coupled phase transitions and turbulent mixing. Combining experiments and mean-field theory, we establish scaling laws for steam-injected clouds in unsaturated air seeded with condensation nuclei. Depending on whether the cloud is confined to the initial momentum-dominated zone of the jet or extends into the buoyancy-dominated plume, two asymptotic regimes arise. In the momentum regime, cloud dimensions scale with the injector radius. In the buoyancy regime, size follows a ṁ^2/5 scaling, where ṁ is the injected steam mass flow rate. Assuming inter-droplet air remains humidity-saturated, our mean-field analysis predicts cloud persistence governed by enthalpy and humidity mixing. These findings bridge microphysical processes and macroscale dynamics, offering a quantitative framework for atmospheric cloud evolution.
SN - 0031-9007
SN - 1079-7114
ER -