An experimental investigation on the speed of sand flow through a fixed porous bed

This study examines the flow field in three axisymmetric expansions having diffuser half-angles of 14, 18, and 90 deg, respectively. Velocity measurements were performed at a Reynolds number of Re = 1.56 × 104 using a single component LDA operated in forward scatter. The test facility was refractive index matched, allowing measurement of the velocities U, V, W, u2, v2, w2, uv and uw upstream of, and throughout the entire recirculation region. The results indicate that the diffuser geometry influences the separated shear layer appreciably over the entire length of the diffuser section. The production of turbulence immediately after separation is much higher in the case of the 14 and 18 deg diffuser compared to the 90 deg expansion, leading to higher diffusion rates in the separated shear layer, and hence earlier reattachment of the shear layer.

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Experimental Investigation of Rarefied Flow Through Tubes of Various Surface Properties

Rarefied Gas Dynamics: Space-Related Studies ◽

10.2514/5.9781600865909.0273.0282 ◽

1989 ◽

pp. 273-282

Keyword(s):

Experimental Investigation ◽

Surface Properties ◽

Rarefied Flow ◽

Flow Through

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Experimental Investigation of Polymer Flow through Water- and Oilwet Berea Sandstone Core Samples - (SPE-164844)

London 2013, 75th eage conference en exhibition incorporating SPE Europec ◽

10.3997/2214-4609.20130544 ◽

2013 ◽

Author(s):

D.G. Hatzignatiou ◽

H. Moradi ◽

A. Stavland

Keyword(s):

Experimental Investigation ◽

Berea Sandstone ◽

Polymer Flow ◽

Core Samples ◽

Flow Through

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Experimental Investigation of Water Flow through Vesicular Fractures in Volcanic Rock

International Journal of Geomechanics ◽

10.1061/(asce)gm.1943-5622.0001815 ◽

2020 ◽

Vol 20 (10) ◽

pp. 04020170

Author(s):

Xiaoming Liu ◽

Benliang Yang ◽

Lin-Shuang Zhao ◽

Wan-Huan Zhou

Keyword(s):

Experimental Investigation ◽

Volcanic Rock ◽

Water Flow ◽

Flow Through

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Paper 19: An Investigation of the Flow through Tandem Cascades

Proceedings of the Institution of Mechanical Engineers Conference Proceedings ◽

10.1243/pime_conf_1965_180_282_02 ◽

1965 ◽

Vol 180 (10) ◽

pp. 66-73 ◽

Cited By ~ 2

Author(s):

J. W. Railly ◽

M. E. El-Sarha

Keyword(s):

Experimental Investigation ◽

Slow Speed ◽

Wide Range ◽

Speed Performance ◽

Flow Through ◽

Inlet Angle ◽

Tandem Cascades

An experimental investigation of the slow speed performance of a tandem cascade of aerofoils is described. The theoretical criteria on which the cascade was designed are discussed; the method of Ackeret, described elsewhere, was used to obtain the geometry of the aerofoils. Tests were carried out on the effect of the magnitude of the gap between each tandem pair and of the effect of varying, independently, the stagger of each aerofoil. Tests were carried out over a wide range of inlet angle for the range of staggers adopted and optimum deflections for the cascade were determined.

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Experimental Investigation of Enhanced Heat Transfer and Pressure Drop in a Solar Air Heater Duct With Discretized Broken V-Rib Roughness

Journal of Solar Energy Engineering ◽

10.1115/1.4028071 ◽

2014 ◽

Vol 137 (2) ◽

Cited By ~ 12

Author(s):

Anil Kumar Patil ◽

J. S. Saini ◽

Krishna Kumar

Keyword(s):

Heat Transfer ◽

Experimental Investigation ◽

Geometrical Parameters ◽

Solar Air Heater ◽

Enhanced Heat Transfer ◽

Transfer Rates ◽

Air Heater ◽

Effective Efficiency ◽

Flow Through ◽

Considerable Enhancement

The present study examines the augmentation in heat transfer and friction in a flow through solar air heater duct with discretized broken V-rib roughness. The experimental outcomes pertaining to Reynolds number from 3000 to 17,000, relative gap position (s′/s) from 0.2 to 0.8, relative staggered rib position (p′/p) from 0.2 to 0.8 have been presented and discussed. Discretized broken V-rib roughness brought out considerable enhancement in heat transfer rates over V-rib roughness and smooth duct. Effective efficiency of discretized broken V-rib roughened solar air heater is estimated and geometrical parameters of roughness are optimized with regard to temperature rise parameter and insolation.

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