Matches in SemOpenAlex for { <https://semopenalex.org/work/W83074384> ?p ?o ?g. }
Showing items 1 to 56 of
56
with 100 items per page.
- W83074384 abstract "An experiment is described in which riblets, which are longitudinal surface groves that have been shown by NASA to reduce turbulent flow skin friction on flat plates by much as 8 percent, are used to attempt to reduce the overall vehicle drag of rowing shells. Two single rowing shells, borrowed from the USNA rowing team and ballasted (with the outriggers removed) to represent a 200 lbf rower, were attached to the drag balance of the carriage of the USNA tow tank and towed at steady velocities from 4 to 20 ft/sec in 2 ft/sec increments. The attachment mechanism allowed the shells to move freely in heave and pitch (sinkage and trim) which were measured with a sonic height probe and angleometer, respectively. Various surface conditions tested include bare hull, flat (non-ribleted) tape, and riblet tape (cleaned and uncleaned) in combination with two sizes of trip wire and three trip locations. The particular riblet tape used provided a surface geometry of saw-tooth pattern transverse to the flow with a height and spacing of 0.003 in. This provided an optimum non-dimensional height (s+) recommended by Walsh and Lindemann (1984) of NASA of 12 to 15 over most of the shell length for the higher velocities. The overall vehicle drag results are compared with and without riblets and with and without trip wire. Riblet drag reductions of between 3 and 5 percent are observed. The trip wire results showed an increase in drag due to their parasite drag at. the lower velocities but a drag reduction at the higher velocities. Predictions of the viscous component of the drag difference between configurations are developed including the effects of sinkage and trim. The predictions compare qualitatively with the experimental results except for the apparent drag reduction with a trip wire at the higher velocities." @default.
- W83074384 created "2016-06-24" @default.
- W83074384 creator A5005442702 @default.
- W83074384 creator A5020338873 @default.
- W83074384 date "1989-08-08" @default.
- W83074384 modified "2023-09-26" @default.
- W83074384 title "Drag Reduction with Riblets on Rowing Shells" @default.
- W83074384 doi "https://doi.org/10.5957/attc-1989-048" @default.
- W83074384 hasPublicationYear "1989" @default.
- W83074384 type Work @default.
- W83074384 sameAs 83074384 @default.
- W83074384 citedByCount "0" @default.
- W83074384 crossrefType "proceedings-article" @default.
- W83074384 hasAuthorship W83074384A5005442702 @default.
- W83074384 hasAuthorship W83074384A5020338873 @default.
- W83074384 hasConcept C121332964 @default.
- W83074384 hasConcept C127313418 @default.
- W83074384 hasConcept C127413603 @default.
- W83074384 hasConcept C166957645 @default.
- W83074384 hasConcept C192562407 @default.
- W83074384 hasConcept C199104240 @default.
- W83074384 hasConcept C2780366628 @default.
- W83074384 hasConcept C38349280 @default.
- W83074384 hasConcept C57879066 @default.
- W83074384 hasConcept C66938386 @default.
- W83074384 hasConcept C72921944 @default.
- W83074384 hasConcept C95457728 @default.
- W83074384 hasConceptScore W83074384C121332964 @default.
- W83074384 hasConceptScore W83074384C127313418 @default.
- W83074384 hasConceptScore W83074384C127413603 @default.
- W83074384 hasConceptScore W83074384C166957645 @default.
- W83074384 hasConceptScore W83074384C192562407 @default.
- W83074384 hasConceptScore W83074384C199104240 @default.
- W83074384 hasConceptScore W83074384C2780366628 @default.
- W83074384 hasConceptScore W83074384C38349280 @default.
- W83074384 hasConceptScore W83074384C57879066 @default.
- W83074384 hasConceptScore W83074384C66938386 @default.
- W83074384 hasConceptScore W83074384C72921944 @default.
- W83074384 hasConceptScore W83074384C95457728 @default.
- W83074384 hasLocation W830743841 @default.
- W83074384 hasOpenAccess W83074384 @default.
- W83074384 hasPrimaryLocation W830743841 @default.
- W83074384 hasRelatedWork W160110119 @default.
- W83074384 hasRelatedWork W160808994 @default.
- W83074384 hasRelatedWork W2103542636 @default.
- W83074384 hasRelatedWork W2107345578 @default.
- W83074384 hasRelatedWork W2333977574 @default.
- W83074384 hasRelatedWork W2370263219 @default.
- W83074384 hasRelatedWork W2973825223 @default.
- W83074384 hasRelatedWork W647193837 @default.
- W83074384 hasRelatedWork W83074384 @default.
- W83074384 hasRelatedWork W2335888474 @default.
- W83074384 isParatext "false" @default.
- W83074384 isRetracted "false" @default.
- W83074384 magId "83074384" @default.
- W83074384 workType "article" @default.