Publications

BibTex format

@article{Huang:2023:10.1017/jfm.2023.210,
author = {Huang, J and Burridge, HC and van, Reeuwijk M},
doi = {10.1017/jfm.2023.210},
journal = {Journal of Fluid Mechanics},
pages = {1--29},
title = {The internal structure of forced fountains},
url = {http://dx.doi.org/10.1017/jfm.2023.210},
volume = {961},
year = {2023}
}

Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We study the mixing processes inside a forced fountain using data from directnumerical simulation. The outer boundary of the fountain with the ambient is aturbulent/non-turbulent interface. Inside the fountain, two internalboundaries, both turbulent/turbulent interfaces, are identified: 1) theclassical boundary between upflow and downflow which is composed of the loci ofpoints of zero mean vertical velocity; and 2) the streamline that separates themean flow emitted by the source from the entrained fluid from the ambient (theseparatrix). We show that entrainment due to turbulent fluxes across theinternal boundary is at least as important as that by the mean flow. However,entrainment by the turbulence behaves substantively differently from that bythe mean flow and cannot be modelled using the same assumptions. This presentsa challenge for existing models of turbulent fountains and other environmentalflows that evolve inside turbulent environments.
AU  - Huang,J
AU  - Burridge,HC
AU  - van,Reeuwijk M
DO  - 10.1017/jfm.2023.210
EP  - 29
PY  - 2023///
SN  - 0022-1120
SP  - 1
TI  - The internal structure of forced fountains
T2  - Journal of Fluid Mechanics
UR  - http://dx.doi.org/10.1017/jfm.2023.210
UR  - http://arxiv.org/abs/2301.09618v1
UR  - https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/internal-structure-of-forced-fountains/C4564AEF4E8A75746D4AC93C35C5DB60
UR  - http://hdl.handle.net/10044/1/103296
VL  - 961
ER  -

Download

Professor Maarten van Reeuwijk

Contact

Assistant

Location

Summary

Citation

BibTex format

RIS format (EndNote, RefMan)