Particle velocity and size effects in laboratory slurry erosion measurements OR… do you know what your particles are doing?

Clark, Hector McI.

doi:10.1016/s0301-679x(02)00052-x

Cited by 83 publications

(45 citation statements)

References 12 publications

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“…Indeed, a recent review paper by Clark [22] questions whether, even in a controlled small scale laboratory test, experimentalists actually know enough about what their particles are doing. However, with the advancement in CFD codes some degree of particle tracking is possible and can be used to help predict the location and rate of erosion in both simple and complex flow geometries.…”

Section: Comparison Of Pilot Scale Bend Erosion Rates With the Cfd Momentioning

confidence: 99%

Investigations of sand–water induced erosive wear of AISI 304L stainless steel pipes by pilot-scale and laboratory-scale testing

Wood

Jones

2003

Wear

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The repair costs of erosion damage caused by solid particle impingement from transporting slurries and other particle-laden liquids in pipes can be extremely high.In the absence of accurate predictive models, routine monitoring of the pipe wall thickness or the use of sacrificial coupons are required to warn of erosion damage or impending loss of containment. Apart from advantages for plant maintenance, the environmental, safety and production implications are enormous. Identification of critical pipe components susceptible to high levels of damage, and innovative ways to ameliorate the damage, has been an active topic of research for decades. Recent work at Nottingham and Southampton Universities [1] has sought definitions of flow fields and particle dispersions and their relationship to erosive wear to facilitate the development of new designs and geometries for slurry handling equipment. This paper covers research that has been aimed at determining the distribution of erosion rates and the erosion mechanisms that occur over wetted surfaces within pilotscale pipe systems handling water-sand mixtures at 10% by volume concentrations and at a mean fluid velocity of approximately 3 m/s. Experiments are presented which have been conducted on a test section consisting of an upstream straight pipe

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Section: Comparison Of Pilot Scale Bend Erosion Rates With the Cfd Momentioning

confidence: 99%

Investigations of sand–water induced erosive wear of AISI 304L stainless steel pipes by pilot-scale and laboratory-scale testing

Wood

Jones

2003

Wear

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“…Amongst these rigs are slurry pot erosion tester [4][5][6][7][8][9], jet impingement rig [10][11][12][13][14], Coriolis erosion tester [15][16][17], pipe flow loop [18,19] and rotating cylinder apparatus [20][21][22]. Each rig has its advantages and disadvantages in terms of ease of usage, cost, ease of maintenance and control of test parameters.…”

Section: Introductionmentioning

confidence: 99%

“…The pipe flow loop provides a good indication of actual erosion-corrosion rates in slurry pipelines but is seldom used due to the high cost of construction, maintenance and actual space limitation within laboratories. A slurry pot erosion tester was selected for this work as it allows variation of parameters with good accuracy [4][5][6][7][8][9]. Erosion-corrosion testing is performed with this rig by changing the slurry medium to corrosive slurry.…”

Section: Introductionmentioning

confidence: 99%

Erosion–corrosion resistance of engineering materials in various test conditions

Rajahram

Harvey

Wood

2009

Wear

166

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a b s t r a c tErosion-corrosion is a complex phenomenon which involves the interaction between the mechanical processes of solid particle erosion and the electrochemical processes of corrosion. A whole range of issues is faced by a designer when trying to obtain relevant information on erosion-corrosion performance of a material. Amongst the constraints are the dispersed test conditions and test rigs available in the literature making comparisons and quantifying erosion-corrosion wear rates of different materials very difficult. The aim of this work is to evaluate the repeatability of erosion-corrosion experiments and to investigate the role of different parameters influencing erosion-corrosion. The materials tested in this work are stainless steel (SS316L/UNS S31603), carbon steel (AISI 1020/UNS G10200) and nickel-aluminium bronze (NAB/UNS C63200). A slurry pot erosion tester was used as the test apparatus and test parameters such as erodent size, erodent concentration, flow velocity and test solutions were varied to study their effect on erosion-corrosion. SEM analysis showed that a similar erosion-corrosion mechanism is seen for SS316L and NAB with formation of multiple extruded lips and platelets typically seen for erosion dominated material. In contrast the surface of AISI 1020 revealed the formation of craters, pits and shallow indentations which suggests that corrosion mechanism has a dominant influence on the material. Error rates in tests were found to have an average of 5.5% which are relatively low indicating good repeatability of test measurements and data from the test rig. The erosion-corrosion resistance of AISI 1020, SS316L and NAB were compared and it was found that SS316L showed the lowest erosion-corrosion mass loss rates in all test conditions followed by NAB and then AISI 1020. However in terms of synergistic ranking, NAB showed the best resistance to the combined action of erosion and corrosion with the highest negative synergy value. Positive synergy was evident for AISI 1020 in 3.5% NaCl and SS316L in 0.3 M HCl. A wear map is presented to evaluate erosion-corrosion trends of the materials. This work combines the assessment of test repeatability, variation in test conditions and comparison of material performance which are key stages in a material selection process.

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“…This behavior is well known in the literature (Horszczaruk, 2004), and it may be caused by different factors, including the inhomogeneous structure of the concrete, the changes in the surface of the specimen due to erosion. The size and the shape degradation may also come into play (Cooke, 1996;Clark, 2002), as this effect may not be fully eliminated by renewing the slurry in the tank every 6 hours.…”

Section: Comparison Against Experimentsmentioning

confidence: 99%

“…Actually, it involves a strong synergy between numerical and physical modelling, a concept which has already been explored in erosion studies (e.g. Clark, 2002;Gnanavelu et al, 2011;Mansouri et al, 2015). A parameter has been introduced which, at the present stage, represents only the effect of the fluid dynamic conditions on the effectiveness of the apparatus.…”

Section: Introductionmentioning

confidence: 99%

A combined CFD-experimental method for abrasive erosion testing of concrete

Messa

Branco

Filho

et al. 2017

Journal of Hydrology and Hydromechanics

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Serious damage may occur to concrete hydraulic structures, such as water galleries, spillways, and stilling basins, due to the abrasive erosion caused by the presence of solid particles in the flow. This underlines the importance of being capable in providing characterization of the concrete from the point of view of its vulnerability to abrasive erosion, in order to improve the design of the structure and the material selection. Nevertheless, the existing apparatus for concrete abrasive erosion testing are either far from allowing realistic simulation of the actual environment in which this phenomenon occurs, or show a large degree of complexity and cost. An alternative method has been developed with the aid of Computational Fluid Dynamics (CFD). CFD was first employed to verify the effectiveness of a new laboratory equipment. Afterwards, a parameter has been introduced which, by successful comparison against preliminary experiments, proved suitable to quantify the effect of the fluid dynamic conditions on the concrete abrasive erosion, thereby opening the way to CFD-based customization of the apparatus. In the future, the synergy of numerical and physical modelling will allow developing predictive models for concrete erosion, making it possible to reliably simulate real structures.

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Particle velocity and size effects in laboratory slurry erosion measurements OR… do you know what your particles are doing?

Cited by 83 publications

References 12 publications

Investigations of sand–water induced erosive wear of AISI 304L stainless steel pipes by pilot-scale and laboratory-scale testing

Investigations of sand–water induced erosive wear of AISI 304L stainless steel pipes by pilot-scale and laboratory-scale testing

Erosion–corrosion resistance of engineering materials in various test conditions

A combined CFD-experimental method for abrasive erosion testing of concrete

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