Experimental study of the pressure drop after fractal-shaped orifices in turbulent pipe flows

Aly, A. Abou El-Azm; Chong, A.; Nicolleau, F.; Beck, S.B.M.

doi:10.1016/j.expthermflusci.2009.09.008

Cited by 51 publications

(20 citation statements)

References 6 publications

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“…Owing to the low numerical dissipation in low speeds, the scheme performs well for these speeds when compared to the ROE scheme. The results for the turbulent flows after the orifice are compared with those of the corresponding experiment [1,3]. They show good agreements in the mean velocity profiles at different holes.…”

Section: Discussionmentioning

confidence: 75%

“…The experimental set up is described in more details in [1]. It consists of a wind tunnel which is composed of two Perspex tubes, each two meter long (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In order to tackle the low Mach flow, the scheme is replaced by a low dissipation upwind SLAU (Simple Low dissipation AUSM) scheme [18]. The results are compared with the corresponding experimental results done in [1,3].…”

Section: Introduction-motivationmentioning

confidence: 99%

“…This observation is empirical and no link with fractal geometry has been proposed so far. In longer term we hope to understand better the physics underlying this observation [1].…”

Section: Introduction-motivationmentioning

confidence: 99%

“…We start from a simple problem with a fractal star based on von Koch's snowflake. The numerical experiment is combined with a laboratory experiment reproducing the same conditions [1,3]. The experimental set up is shown in Fig.…”

Section: Introduction-motivationmentioning

confidence: 99%

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Detached Eddy Simulation for Turbulent Flows in a Pipe with a Snowflake Fractal Orifice

2012

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Turbulent flows in a pipe with a snowflake fractal shape (SF2) orifice are investigated using the parallelized, density-based, dynamic mesh and detached eddy simulation code (DG-DES) (Xia, PhD thesis, 2005;Xia and Qin, AIAA 2005-106, 2005). For comparison with the laboratory experiment, the flow is essentially a low Mach number flow. In order to tackle the low speed problem of the density based method, the SLAU (Simple Low dissipation AUSM) (Shima and Kitamura in 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, AIAA 2009AIAA -136, 2009) is adopted in this paper. The scheme exhibits low numerical dissipations for low speeds and needs no problem-dependent "cut-off Mach number". The results for the flows after the orifice are compared with those of the corresponding experiment (Chong, PhD thesis, 2008). Comparisons show good agreements in the mean velocity profiles at the different holes.

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Section: Discussionmentioning

confidence: 75%

“…The experimental set up is described in more details in [1]. It consists of a wind tunnel which is composed of two Perspex tubes, each two meter long (Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Introduction-motivationmentioning

confidence: 99%

“…This observation is empirical and no link with fractal geometry has been proposed so far. In longer term we hope to understand better the physics underlying this observation [1].…”

Section: Introduction-motivationmentioning

confidence: 99%

Section: Introduction-motivationmentioning

confidence: 99%

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Detached Eddy Simulation for Turbulent Flows in a Pipe with a Snowflake Fractal Orifice

2012

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Integration of numerical and physical experiments to enhance student learning experience

Perumal

Ganesan

2018

Comp Applic In Engineering

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In this paper, results of an integrated numerical and physical experiments on the standard orifice meter and the modified orifice meter are presented. These experiments were conducted as part of the computational fluid dynamics course offered in Curtin University, Malaysia. Experiments were selected from prior courses such as fluid mechanics and heat transfer with a view to reinforce the concepts already learnt. Students also conducted literature survey, which keeps them up‐to‐date on the chosen topic of study.

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KS Input Spectrum, Some Fundamental Works on the Vibration Spectrum of a Self-similar Linear Chain

et al. 2012

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Experimental study of the pressure drop after fractal-shaped orifices in turbulent pipe flows

Cited by 51 publications

References 6 publications

Detached Eddy Simulation for Turbulent Flows in a Pipe with a Snowflake Fractal Orifice

Detached Eddy Simulation for Turbulent Flows in a Pipe with a Snowflake Fractal Orifice

Integration of numerical and physical experiments to enhance student learning experience

KS Input Spectrum, Some Fundamental Works on the Vibration Spectrum of a Self-similar Linear Chain

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