Numerical solutions of 2-D steady incompressible flow over a backward-facing step, Part I: High Reynolds number solutions

Ertürk, Ercan

doi:10.1016/j.compfluid.2007.09.003

Cited by 197 publications

(168 citation statements)

References 37 publications

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“…Erturk has studied the effects of Reynolds number on physics of the flow through a backward facing step duct for Reynolds number up to 3000 [17]. His detailed study focuses on flow physics.…”

Section: Effect Of Reynolds Numbermentioning

confidence: 99%

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Conjugate Heat Transfer Characteristics of Laminar Flows Through a Backward Facing Step Duct

Çelik

2017

SDÜ Fen Bil Enst Der

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Present study investigates the effects of solid to fluid conductivity ratio, Prandtl and Reynolds numbers, and solid wall thickness on conjugate heat transfer for a backward facing step duct with a conductive solid bottom wall. Although Kanna and Das performed a case study in 2006 for the same problem, the benchmark studies conducted later including the present one revealed that their results are arguable. Ramsak states in a study "Professor Kanna has confirmed in personal communication that their results are probably wrong". The temperature and Nusselt number variations along the solid-fluid interface presented here are in excellent agreement with those obtained by Ramsak. The analyses presented here reveal that even though the decrease in Pr and the increase in solid to fluid conductivity ratio have similar global influence with the thinning wall on the interface temperature, the influence of the former parameters are limited in recirculation zone. Ters Basamak Şekilli Kanal İçerisindeki Laminer Akışın Eşlenik Isı Transferi Karakteristiği Anahtar KelimelerEşlenik ısı transferi, OpenFOAM, Ters basamak şekilli kanal, Sonlu hacimler yöntemi Özet: Bu çalışma iletken katı bir alt duvarı olan ters basamak şekilli bir kanal için, katının akışkana göre iletim oranı, katı duvarın kalınlığı, Prandtl ve Reynolds sayılarının eşlenik ısı transferine etkilerini incelemektedir. 2006 yılında Kanna ve Das aynı problem için bir durum çalışması yapmış olmalarına rağmen, sunulan bu çalışmanın da dâhil olduğu sonraki yıllarda yapılan karşılaştırma çalışmaları Kanna ve Das'ın sonuçlarının tartışmalı olduğunu ortaya koymuştur. Ramsak çalışmasında "kişisel iletişim sırasında Profesör Kanna'nın elde ettikleri sonuçların muhtemelen yanlış olduğunu teyit ettiğini" belirtmektedir. Bu çalışmada sunulan ara yüzey boyunca sıcaklık ve Nusselt sayısı değişimleri Ramsak'ın elde ettikleri ile mükemmel bir uyum içerisindedir. Bu makalede sunulan analizler, her ne kadar Prandtl sayısındaki düşüşün ve katının akışkana iletim oranındaki artışın ara yüzey sıcaklığı üzerindeki genel etkisinin katı duvardaki incelmeyle benzer olduğunu ortaya koysa da, ilk iki parametrenin etkileri resirkülasyon bölgesinde sınırlıdır.

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Section: Effect Of Reynolds Numbermentioning

confidence: 99%

“…[4][5][6][7][8][9][10][11][12][13][14][15][16]. Erturk conducted a comprehensive study to check whether Re=800 was a limit for steady 2-D flow through a backward facing step duct [17]. Up to date there were only a few studies that were able to clearly show presence of steady numerical solution beyond Re=800 [18,19].…”

Section: Introductionmentioning

confidence: 99%

Conjugate Heat Transfer Characteristics of Laminar Flows Through a Backward Facing Step Duct

Çelik

2017

SDÜ Fen Bil Enst Der

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“…O segundo caso teste escolhido foi o do escoamento em um degrau, cujos resultados foram comparados com os obtidos por Erturk (2008).…”

Section: Escoamento Em Um Degrauunclassified

“…Para comparar os resultados obtidos pelo método proposto com os obtidos por Erturk (2008), foi considerado o tamanho do vórtice formado atrás do degrau. Para este caso, com Re = 100, foi obtido um vórtice de tamanho 2.8, enquanto que o tamanho do vórtice obtido por Erturk (2008) foi 2.9.…”

Section: Escoamento Em Um Degrauunclassified

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Métodos de fronteira imersa em mecânica dos fluidos

Petri¹

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Re‐examining the QUICKEST algorithm for two‐dimensional incompressible fluids

Le¹

2010

Numerical Methods in Fluids

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SUMMARYDavis and Moore's two-dimensional QUICKEST algorithm is presented in detail to give an explicit description of how upwinding terms are treated based on flow direction. Among the finite difference methods used in fluid dynamics, QUICKEST is easy to implement and remains stable over long times and a wide range of Reynolds numbers. By giving a comprehensive discussion of all the aspects of this algorithm, including staggered grids, advancing velocity in time, enforcing incompressibility, and choice of boundary conditions, the main challenges to coding are overcome. Vortex shedding simulations are shown for Reynolds numbers from 250 to 10 000 and times as high as 288 s. Comparisons were made for Strouhal number with Davis and Moore's results as well as the experimental data of others. Streakline plots and coefficients of drag and lift were also compared with their original paper. To further test the algorithm, additional simulations were made for flow over a backward-facing step and Poiseuille flow.

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Numerical solutions of 2-D steady incompressible flow over a backward-facing step, Part I: High Reynolds number solutions

Cited by 197 publications

References 37 publications

Conjugate Heat Transfer Characteristics of Laminar Flows Through a Backward Facing Step Duct

Conjugate Heat Transfer Characteristics of Laminar Flows Through a Backward Facing Step Duct

Métodos de fronteira imersa em mecânica dos fluidos

Re‐examining the QUICKEST algorithm for two‐dimensional incompressible fluids

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