{"id":{"repo_id":"woods-hole","oai_identifier":"oai:darchive.mblwhoilibrary.org:1912/1827"},"canonical_url":"https://search.dev.ndltd.org/etd/woods-hole/oai:darchive.mblwhoilibrary.org:1912/1827","repository":{"repo_id":"woods-hole","name":"Woods Hole Oceanographic Institute","base_url":"https://darchive.mblwhoilibrary.org/server/oai/request"},"display":{"title":"Intake flow fields for a zooplankton pump sampling system","abstract":"The flow fields entering intake forms oriented into a steady flume flow has been observed and quantified. This data is applied to a model of zooplankton sampler performance, to predict the fraction of the sampled fluid from which no animals will escape under conditions similar to those of the tests. Flume flow speeds (≈5 cm/s) and intake pumping rate (≈33 gal/min) are scaled by a factor of 20 in the model, while test form dimensions (4 and 7 inch throats and 12 inch outside diameters) are considered to be full-size for the prototype pump samplers. The data presented can be applied to other flow and geometrical scales. The 'lethal cone' and critical fluid deformation rate envelopes are evaluated for eleven intake forms: pointed, bullet-shaped, funnel-shaped, rounded and square-ended. The sharply-pointed intake performed test, for tow speed ≈100 cm/s, swimming speed=30 cm/s and Dc=1. 0 sec-1. 'Sure capture' is predicted in 83% of the sampled water. The four funnel-shaped forms follow consecutively in a rank ordering, with efficiencies, of 77% to 68%.","abstract_html":"The flow fields entering intake forms oriented into a steady flume flow has been observed and quantified. This data is applied to a model of zooplankton sampler performance, to predict the fraction of the sampled fluid from which no animals will escape under conditions similar to those of the tests. Flume flow speeds (≈5 cm/s) and intake pumping rate (≈33 gal/min) are scaled by a factor of 20 in the model, while test form dimensions (4 and 7 inch throats and 12 inch outside diameters) are considered to be full-size for the prototype pump samplers. The data presented can be applied to other flow and geometrical scales. The 'lethal cone' and critical fluid deformation rate envelopes are evaluated for eleven intake forms: pointed, bullet-shaped, funnel-shaped, rounded and square-ended. The sharply-pointed intake performed test, for tow speed ≈100 cm/s, swimming speed=30 cm/s and Dc=1. 0 sec-1. 'Sure capture' is predicted in 83% of the sampled water. The four funnel-shaped forms follow consecutively in a rank ordering, with efficiencies, of 77% to 68%.","abstract_has_math":false,"creators":["Brooks, James Ray"],"institution":"Massachusetts Institute of Technology and Woods Hole Oceanographic Institution","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1979,"date_issued":"1979-08","date_published":"1979-08","updated_at":"2026-07-27T22:05:12Z","subjects":["Flumes","Zooplankton","Intakes","Pumping machinery"],"languages":["en_US"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.1575/1912/1827"],"render_values":[{"text":"10.1575/1912/1827","href":"https://doi.org/10.1575/1912/1827","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/1912/1827","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Brooks, James Ray"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2007-10-17T14:38:35Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2007-10-17T14:38:35Z"]},{"key":"dc:date.issued","label":"Date","values":["1979-08"]},{"key":"dc:publisher","label":"Institution","values":["Massachusetts Institute of Technology and Woods Hole Oceanographic Institution"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Flumes","Zooplankton","Intakes","Pumping machinery"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.1575/1912/1827"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1912/1827"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submitted in partial fulfillment of the requirements for the degree of Ocean Engineer at the Woods Hole Oceanographic Institution and the Massachusetts Institute of Technology and for the degree of Ocean Engineer at the Massachusetts Institute of Technology August 1979"]},{"key":"dc:description.abstract","label":"Abstract","values":["The flow fields entering intake forms oriented into a steady flume flow has been observed and quantified. This data is applied to a model of zooplankton sampler performance, to predict the fraction of the sampled fluid from which no animals will escape under conditions similar to those of the tests. Flume flow speeds (≈5 cm/s) and intake pumping rate (≈33 gal/min) are scaled by a factor of 20 in the model, while test form dimensions (4 and 7 inch throats and 12 inch outside diameters) are considered to be full-size for the prototype pump samplers. The data presented can be applied to other flow and geometrical scales. The 'lethal cone' and critical fluid deformation rate envelopes are evaluated for eleven intake forms: pointed, bullet-shaped, funnel-shaped, rounded and square-ended. The sharply-pointed intake performed test, for tow speed ≈100 cm/s, swimming speed=30 cm/s and Dc=1. 0 sec-1. 'Sure capture' is predicted in 83% of the sampled water. The four funnel-shaped forms follow consecutively in a rank ordering, with efficiencies, of 77% to 68%."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Intake flow fields for a zooplankton pump sampling system"]}]}],"canonical_facts":{"dc:creator":["Brooks, James Ray"],"dc:date.accessioned":["2007-10-17T14:38:35Z"],"dc:date.available":["2007-10-17T14:38:35Z"],"dc:date.issued":["1979-08"],"dc:description":["Submitted in partial fulfillment of the requirements for the degree of Ocean Engineer at the Woods Hole Oceanographic Institution and the Massachusetts Institute of Technology and for the degree of Ocean Engineer at the Massachusetts Institute of Technology August 1979"],"dc:description.abstract":["The flow fields entering intake forms oriented into a steady flume flow has been observed and quantified. This data is applied to a model of zooplankton sampler performance, to predict the fraction of the sampled fluid from which no animals will escape under conditions similar to those of the tests. Flume flow speeds (≈5 cm/s) and intake pumping rate (≈33 gal/min) are scaled by a factor of 20 in the model, while test form dimensions (4 and 7 inch throats and 12 inch outside diameters) are considered to be full-size for the prototype pump samplers. The data presented can be applied to other flow and geometrical scales. The 'lethal cone' and critical fluid deformation rate envelopes are evaluated for eleven intake forms: pointed, bullet-shaped, funnel-shaped, rounded and square-ended. The sharply-pointed intake performed test, for tow speed ≈100 cm/s, swimming speed=30 cm/s and Dc=1. 0 sec-1. 'Sure capture' is predicted in 83% of the sampled water. The four funnel-shaped forms follow consecutively in a rank ordering, with efficiencies, of 77% to 68%."],"dc:format.mimetype":["application/pdf"],"dc:identifier.doi":["10.1575/1912/1827"],"dc:identifier.uri":["https://hdl.handle.net/1912/1827"],"dc:language.iso":["en_US"],"dc:publisher":["Massachusetts Institute of Technology and Woods Hole Oceanographic Institution"],"dc:subject":["Flumes","Zooplankton","Intakes","Pumping machinery"],"dc:title":["Intake flow fields for a zooplankton pump sampling system"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T22:05:12Z"}