Cargando…

Fish mouths as engineering structures for vortical cross-step filtration

Suspension-feeding fishes such as goldfish and whale sharks retain prey without clogging their oral filters, whereas clogging is a major expense in industrial crossflow filtration of beer, dairy foods and biotechnology products. Fishes' abilities to retain particles that are smaller than the po...

Descripción completa

Detalles Bibliográficos
Autores principales: Sanderson, S. Laurie, Roberts, Erin, Lineburg, Jillian, Brooks, Hannah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4820540/
https://www.ncbi.nlm.nih.gov/pubmed/27023700
http://dx.doi.org/10.1038/ncomms11092
_version_ 1782425421099302912
author Sanderson, S. Laurie
Roberts, Erin
Lineburg, Jillian
Brooks, Hannah
author_facet Sanderson, S. Laurie
Roberts, Erin
Lineburg, Jillian
Brooks, Hannah
author_sort Sanderson, S. Laurie
collection PubMed
description Suspension-feeding fishes such as goldfish and whale sharks retain prey without clogging their oral filters, whereas clogging is a major expense in industrial crossflow filtration of beer, dairy foods and biotechnology products. Fishes' abilities to retain particles that are smaller than the pore size of the gill-raker filter, including extraction of particles despite large holes in the filter, also remain unexplained. Here we show that unexplored combinations of engineering structures (backward-facing steps forming d-type ribs on the porous surface of a cone) cause fluid dynamic phenomena distinct from current biological and industrial filter operations. This vortical cross-step filtration model prevents clogging and explains the transport of tiny concentrated particles to the oesophagus using a hydrodynamic tongue. Mass transfer caused by vortices along d-type ribs in crossflow is applicable to filter-feeding duck beak lamellae and whale baleen plates, as well as the fluid mechanics of ventilation at fish gill filaments.
format Online
Article
Text
id pubmed-4820540
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-48205402016-04-17 Fish mouths as engineering structures for vortical cross-step filtration Sanderson, S. Laurie Roberts, Erin Lineburg, Jillian Brooks, Hannah Nat Commun Article Suspension-feeding fishes such as goldfish and whale sharks retain prey without clogging their oral filters, whereas clogging is a major expense in industrial crossflow filtration of beer, dairy foods and biotechnology products. Fishes' abilities to retain particles that are smaller than the pore size of the gill-raker filter, including extraction of particles despite large holes in the filter, also remain unexplained. Here we show that unexplored combinations of engineering structures (backward-facing steps forming d-type ribs on the porous surface of a cone) cause fluid dynamic phenomena distinct from current biological and industrial filter operations. This vortical cross-step filtration model prevents clogging and explains the transport of tiny concentrated particles to the oesophagus using a hydrodynamic tongue. Mass transfer caused by vortices along d-type ribs in crossflow is applicable to filter-feeding duck beak lamellae and whale baleen plates, as well as the fluid mechanics of ventilation at fish gill filaments. Nature Publishing Group 2016-03-29 /pmc/articles/PMC4820540/ /pubmed/27023700 http://dx.doi.org/10.1038/ncomms11092 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Sanderson, S. Laurie
Roberts, Erin
Lineburg, Jillian
Brooks, Hannah
Fish mouths as engineering structures for vortical cross-step filtration
title Fish mouths as engineering structures for vortical cross-step filtration
title_full Fish mouths as engineering structures for vortical cross-step filtration
title_fullStr Fish mouths as engineering structures for vortical cross-step filtration
title_full_unstemmed Fish mouths as engineering structures for vortical cross-step filtration
title_short Fish mouths as engineering structures for vortical cross-step filtration
title_sort fish mouths as engineering structures for vortical cross-step filtration
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4820540/
https://www.ncbi.nlm.nih.gov/pubmed/27023700
http://dx.doi.org/10.1038/ncomms11092
work_keys_str_mv AT sandersonslaurie fishmouthsasengineeringstructuresforvorticalcrossstepfiltration
AT robertserin fishmouthsasengineeringstructuresforvorticalcrossstepfiltration
AT lineburgjillian fishmouthsasengineeringstructuresforvorticalcrossstepfiltration
AT brookshannah fishmouthsasengineeringstructuresforvorticalcrossstepfiltration