Zobrazeno 1 - 10
of 61
pro vyhledávání: '"explicit approximations"'
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 6, p 803 (2022)
Numerous explicit approximations of the Colebrook equation have been developed and evaluated based on two criteria: prediction accuracy and computational efficiency. This paper introduces a new evaluation criterion based on the reliability of each eq
Externí odkaz:
https://doaj.org/article/a84f8a36bc704664981e4b60be6e0ab0
Autor:
Pavel Praks, Dejan Brkić
Publikováno v:
Mathematics, Vol 8, Iss 5, p 796 (2020)
In this reply, we present updated approximations to the Colebrook equation for flow friction. The equations are equally computational simple, but with increased accuracy thanks to the optimization procedure, which was proposed by the discusser, Dr. M
Externí odkaz:
https://doaj.org/article/e9180b5d24ab44d1855f950225e06519
Publikováno v:
Mathematical Modelling and Analysis, Vol 22, Iss 2 (2017)
In this paper, we propose a new approach for obtaining explicit analytical approximations to the homoclinic or heteroclinic solutions of a general class of strongly nonlinear ordinary differential equations describing conservative singledegree-of-fre
Externí odkaz:
https://doaj.org/article/a890c1b84f214de6a1f70c658e5cf079
Autor:
Dejan Brkić, Pavel Praks
Publikováno v:
Fluids, Vol 4, Iss 3, p 114 (2019)
Even a relatively simple equation such as Colebrook’s offers a lot of possibilities to students to increase their computational skills. The Colebrook’s equation is implicit in the flow friction factor and, therefore, it needs to be solved iterati
Externí odkaz:
https://doaj.org/article/8ae21f61565a47a9a06795c263870d73
Autor:
Dejan Brkić, Pavel Praks
Publikováno v:
Mathematics, Vol 7, Iss 5, p 410 (2019)
This reply gives two corrections of typographical errors in respect to the commented article, and then provides few comments in respect to the discussion and one improved version of the approximation of the Colebrook equation for flow friction, based
Externí odkaz:
https://doaj.org/article/eb313eed947d4a15b8a4ce85a6036dbe
Akademický článek
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Autor:
Dejan Brkić, Pavel Praks
Publikováno v:
Mathematics, Vol 7, Iss 1, p 34 (2018)
The Colebrook equation is a popular model for estimating friction loss coefficients in water and gas pipes. The model is implicit in the unknown flow friction factor, f. To date, the captured flow friction factor, f, can be extracted from the logarit
Externí odkaz:
https://doaj.org/article/506cc051f1bf464aa7cc7d57e036a39e
Akademický článek
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K zobrazení výsledku je třeba se přihlásit.
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Autor:
Brkić, Dejan, Praks, Pavel
Publikováno v:
Fluids
Volume 4
Issue 3
Scipedia Open Access
Scipedia SL
Fluids, Vol 4, Iss 3, p 114 (2019)
Volume 4
Issue 3
Scipedia Open Access
Scipedia SL
Fluids, Vol 4, Iss 3, p 114 (2019)
Even a relatively simple equation such as Colebrook&rsquo
s offers a lot of possibilities to students to increase their computational skills. The Colebrook&rsquo
s equation is implicit in the flow friction factor and, therefore, it needs to
s offers a lot of possibilities to students to increase their computational skills. The Colebrook&rsquo
s equation is implicit in the flow friction factor and, therefore, it needs to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61d00ddd05e1c6663b9f32b94aa54e15
https://www.scipedia.com/public/Brkic_Praks_2019a
https://www.scipedia.com/public/Brkic_Praks_2019a
Autor:
Pavel Praks, Dejan Brkić
Publikováno v:
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 2020, 36, ⟨10.23967/j.rimni.2020.09.001⟩
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 2020, 36, ⟨10.23967/j.rimni.2020.09.001⟩
International audience; Using only a limited number of computationally expensive functions, we show a way how to construct accurate and computationally efficient approximations of the Colebrook equation for flow friction based on the asymptotic serie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a461d01518e26a6b3932355a789e297d
http://arxiv.org/abs/2005.07021
http://arxiv.org/abs/2005.07021