{
  "date" : "2000-02-01",
  "identifier_doecontract" : "",
  "subject" : "42 ENGINEERING; HEAT TRANSFER; FINS; TUBES; HEAT EXCHANGERS; LAMINAR FLOW; VORTICES; NAVIER-STOKES EQUATIONS",
  "description" : "Punched longitudinal vortex generators in form of winglets in staggered arrangements were employed to enhance heat transfers in high performance finned oval tube heat exchanger elements. Three-dimensional hydrodynamically and thermally developing laminar flow (Re = 300) and conjugate heat transfer in finned oval tubes were calculated by solving the Navier-Stokes and energy equations with a finite-volume method in curvilinear grids. Velocity field, pressure distribution, vortex formation, temperature fields, local heat transfer distributions and global results for finned oval tubes with two to four staggered winglets ({beta}= 30{sup o}, {lambda} = 2, h =H) were presented and compared. Winglets in staggered arrangement bring larger heat transfer enhancement than in in-line arrangement since the longitudinal vortices from the former arrangement influence a larger area and intensify the fluid motion normal to the flow direction. For Re = 300 and Fi = 500, the ratios of heat transfer enhancement to flow loss penalty (j/j{sub 0})/( f/f{sub 0}) were 1.151 and 1.097 for a finned oval tube with two and four staggered winglets, respectively. (author)",
  "language" : "English",
  "identifier_report" : "",
  "publisher_sponsor" : "",
  "publisher_country" : "United Kingdom",
  "source" : "GB",
  "purl" : "",
  "title" : "Heat transfer enhancement of finned oval tubes with staggered punched longitudinal vortex generators",
  "type" : "Journal Article",
  "subject_related" : "",
  "relation" : "Journal Name: International Journal of Heat and Mass Transfer; Journal Volume: 43; Journal Issue: 3; Other Information: PBD: Feb 2000",
  "entry_date" : "2010-12-30",
  "subject_list" : [ "42 ENGINEERING", "HEAT TRANSFER", "FINS", "TUBES", "HEAT EXCHANGERS", "LAMINAR FLOW", "VORTICES", "NAVIER-STOKES EQUATIONS" ],
  "publisher_availability" : "",
  "rights" : "",
  "announced_date" : "2002-01-31",
  "type_qualifier" : "",
  "has_fulltext" : false,
  "coverage" : "",
  "identifier" : "",
  "journal_volume" : "43",
  "creator" : "Chen, Y; Fiebig, M; Mitra, N K [Ruhr-Universitaet Bochum (Germany). Inst. fuer Thermo- und Fluiddynamik]",
  "site_ownership_code" : "GB",
  "osti_id" : "20225251",
  "journal_issue" : "3",
  "resource_type" : "JOUR",
  "format" : "Medium: X; Size: page(s) 417-435",
  "journal_name" : [ ],
  "contributing_organizations" : "",
  "citation_location" : "https://www.osti.gov/etdeweb/biblio/20225251",
  "publication_year" : 2000,
  "subject_list_commas" : "42 ENGINEERING, HEAT TRANSFER, FINS, TUBES, HEAT EXCHANGERS, LAMINAR FLOW, VORTICES, NAVIER-STOKES EQUATIONS",
  "publisher" : "",
  "identifier_other" : "Journal ID: ISSN 0017-9310; IJHMAK; TRN: GB0121504",
  "publisher_research" : "",
  "creators_list" : [ "Chen, Y", "Fiebig, M", "Mitra, N K [Ruhr-Universitaet Bochum (Germany). Inst. fuer Thermo- und Fluiddynamik]" ],
  "doi" : "https://doi.org/10.1016/S0017-9310(99)00157-X"
}