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Pregled bibliografske jedinice broj: 1058675

Selection Maps of Explicit Colebrook Approximations according to Calculation Time and Precision


Škopac, Lana; Medica-Viola, Vedran; Mrzljak, Vedran
Selection Maps of Explicit Colebrook Approximations according to Calculation Time and Precision // Heat Transfer Engineering, 41 (2020), 1-15 doi:10.1080/01457632.2020.1744248 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1058675 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Selection Maps of Explicit Colebrook Approximations according to Calculation Time and Precision

Autori
Škopac, Lana ; Medica-Viola, Vedran ; Mrzljak, Vedran

Izvornik
Heat Transfer Engineering (0145-7632) 41 (2020); 1-15

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
fluid flow through tubes ; Colebrook approximations ; 3D approximation selection map ; relative error ; calculation time ; marine steam condenser

Sažetak
This paper presents the creation of three-dimensional (3D) maps for selection of best Colebrook friction factor approximation. Twenty Colebrook approximations are observed in range of Reynolds numbers between 4000 and 108 and relative surface roughness less than 0.05. Colebrook approximations with the lowest relative errors at various combinations of Reynolds numbers and relative surface roughness are presented on a 3D map. Elapsed calculation time of each approximation is then taken into account. Two more 3D maps are created by omitting the slowest approximations. Obtained 3D maps enable the selection of the fastest Colebrook approximation with the lowest relative error on a user-defined range of Reynolds numbers and relative surface roughness combinations. Such 3D map was used to determine the optimal Colebrook approximation to calculate the friction factor of the marine steam condenser tubes. Measured friction factor was calculated by physical equation, while other friction factors were determined by implicit Colebrook-White equation and three selected explicit approximations. Difference between calculated and measured Darcy friction factors does not exceed 1.1% at all operating regimes.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo



POVEZANOST RADA


Projekti:
CIII-HR-0108
uniri-tehnic-18-275-1447
uniri-tehnic-18-14
IP-2018-01-3739 - Sustav potpore odlučivanju za zeleniju i sigurniju plovidbu brodova (DESSERT) (Prpić-Oršić, Jasna, HRZZ - 2018-01) ( POIROT)
KK.01.1.1.01.0009 - Napredne metode i tehnologije u znanosti o podatcima i kooperativnim sustavima (EK )
NadSve-Sveučilište u Rijeci-UNIRI_TEHNIC‐18‐18‐1146 - Nesigurnosti procjene brzine broda u pri realnim vremenskim uvjetima (Prpić-Oršić, Jasna, NadSve ) ( POIROT)

Ustanove:
Tehnički fakultet, Rijeka

Profili:

Avatar Url Vedran Medica-Viola (autor)

Avatar Url Vedran Mrzljak (autor)

Poveznice na cjeloviti tekst rada:

doi www.tandfonline.com

Citiraj ovu publikaciju:

Škopac, Lana; Medica-Viola, Vedran; Mrzljak, Vedran
Selection Maps of Explicit Colebrook Approximations according to Calculation Time and Precision // Heat Transfer Engineering, 41 (2020), 1-15 doi:10.1080/01457632.2020.1744248 (međunarodna recenzija, članak, znanstveni)
Škopac, L., Medica-Viola, V. & Mrzljak, V. (2020) Selection Maps of Explicit Colebrook Approximations according to Calculation Time and Precision. Heat Transfer Engineering, 41, 1-15 doi:10.1080/01457632.2020.1744248.
@article{article, author = {\v{S}kopac, Lana and Medica-Viola, Vedran and Mrzljak, Vedran}, year = {2020}, pages = {1-15}, DOI = {10.1080/01457632.2020.1744248}, keywords = {fluid flow through tubes, Colebrook approximations, 3D approximation selection map, relative error, calculation time, marine steam condenser}, journal = {Heat Transfer Engineering}, doi = {10.1080/01457632.2020.1744248}, volume = {41}, issn = {0145-7632}, title = {Selection Maps of Explicit Colebrook Approximations according to Calculation Time and Precision}, keyword = {fluid flow through tubes, Colebrook approximations, 3D approximation selection map, relative error, calculation time, marine steam condenser} }
@article{article, author = {\v{S}kopac, Lana and Medica-Viola, Vedran and Mrzljak, Vedran}, year = {2020}, pages = {1-15}, DOI = {10.1080/01457632.2020.1744248}, keywords = {fluid flow through tubes, Colebrook approximations, 3D approximation selection map, relative error, calculation time, marine steam condenser}, journal = {Heat Transfer Engineering}, doi = {10.1080/01457632.2020.1744248}, volume = {41}, issn = {0145-7632}, title = {Selection Maps of Explicit Colebrook Approximations according to Calculation Time and Precision}, keyword = {fluid flow through tubes, Colebrook approximations, 3D approximation selection map, relative error, calculation time, marine steam condenser} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati:





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