The pyramid gauze diffuser

Gibbings, J.C.

doi:10.1007/bf00533610

Cited by 23 publications

(11 citation statements)

References 3 publications

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“…Observations from such a comparison indicate that the expression due to Gibbings (1973) gives the best overall agreement, particularly for Ko < 3. Since in most aerodynamic applications screens with resistance coefficients well below three will be used, this suggested expression should yield reasonably accurate values for general applications.…”

Section: Resistance Coefficientmentioning

confidence: 89%

“…With a gauze screen in conjunction with a diffuser of specified wall design, wide-angle diffusion in a short overall length with little separation and uniform outlet profile is possible (Gibson 1959. Gibbings (1973) has designed a pyramid gauze diffuser.…”

Section: Discussionmentioning

confidence: 99%

“…Taylor & Batchelor (1949), Schubauer et al (1950), Elder (1959), and more recently Reynolds (1969) and Gibbings (1973) have all developed correlations for the relation ship between Ke and B. The basis of these various flow models cannot be included here, nor can individual comparisons with experimental data.…”

Section: Resistance Coefficientmentioning

confidence: 95%

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Flow Through Screens

Laws¹,

Livesey²

1978

Annu. Rev. Fluid Mech.

258

109

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Section: Resistance Coefficientmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

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Flow Through Screens

Laws¹,

Livesey²

1978

Annu. Rev. Fluid Mech.

258

109

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“…Gibblings [12] proposes yet another equation, by assuming that the flow direction takes a value halfway between the upstream and downstream directions:…”

Section: The Deflection Coefficientmentioning

confidence: 99%

Model for pressure drop and flow deflection in the numerical simulation of stents in aneurysms

Lätt

Chopard

2018

Numer Methods Biomed Eng

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The numerical simulation of flow diverters like stents contributes to the development and improvement of endovascular stenting procedures, leading ultimately to an improved treatment of intracranial aneurysms. Due to the scale difference between the struts of flow diverters and the full artery, it is common to avoid fully resolved simulations at the level of the stent porosity. Instead, the effect of stents on the flow is represented by a heuristic continuum model. However, the commonly used porous media models describe the properties of flow diverters only partially, because they do not explicitly account for the deflection of the flow direction by the stent. We show that this deficiency can be circumvented by adopting the theoretical framework of screen models. The article first reviews existing screen models. It then proposes an explicit formula for the drag and the deflection coefficient, as predicted by each model, for both perpendicular and inclined angles. The results of 2D numerical simulations are used to formulate a generalization of these formulas, to achieve best results in the case of stent modeling. The obtained model is then validated, again through 2D numerical simulation.

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“…6 is from Løland (1991), in Eq. 7 is from Gibbings (1973) and the tangential stress component in Eq. 8 is from Taylor and Batchelor (1949).…”

Section: Flow Through Plankton Nets and Trawlsmentioning

confidence: 99%