Search for: All records

Accurately characterizing particle velocity ejected from a nozzle in erosive wear experiments is crucial for quantifying erosive wear. Methods like particle imaging velocimetry, laser Doppler velocimetry (LDV) provide precise measurements, but they can be costly. An alternative approach to the above-mentioned methods, at a fraction of the cost, is a velocity measurement with a double disc anemometer (DDA). This paper presents a highly improved DDA design with automated postprocessing procedures and result verification. We report an approach and a set of guidelines that significantly enhance particle velocity measurement using a DDA accurately and economically. A new scarring analysis method was conducted to identify the intricacies of how the instrument’s geometries affect the velocity calculation. The DDA results were validated using state-of-the-art LDV equipment, with an agreement of ±2.8% on average. 

Accurately characterizing abrasive particle velocity ejected from a nozzle in a pressurized airflow is crucial for solid particle erosion quantification, abrasive jet micromachining, and abrasive slurry micro-jet experiments. A double-disc anemometer (DDA) is an economical particle velocity measurement apparatus which is cost effective to implement. The DDA method determines particle velocity using the time it takes for particles to travel a known distance between two rotating discs mounted on the same shaft. Since 1975, the DDA has been used to measure solid particle velocities in gas-particulate flow streams. Particle velocity measurement using a DDA is an intricate process, which the experimental procedure lacks published standardization outlining, operation procedures, comprehensive error analysis, and post-processing advice, all required to report accurate and reliable results. This paper presents a new and improved DDA design, automated post-processing procedures, and experimental validation characterizing the flow development of 66 micron glass bead abrasive blasted with a maximum mean particle velocity of 95.3 m/s. State-of-the-art laser Doppler velocimetry equipment (LDV) was used to validate the DDA results with an agreement of −2.8 % on average. Further, this paper investigates the disc separation distance and shaft angular velocity, discussing configuration recommendations for reliable measurements, with an optimal reported uncertainty of ± 3.2 %. Finally, a novel scarring analysis method was conducted to identify the intricacies of how the instrument’s geometries affect the velocity calculation. 

This data repository is supporting the findings within the manuscript 'Accurate Measurement of Particle Velocity using a Double Disc Anemometer in Erosive Wear Experiments.' If any of the resources in this dataset are used in support of future published work, please credit the authors of the primary manuscript publication. This paper presents an improved DDA design, automated post-processing procedures, and result verification. We further investigate disc separation distance and shaft angular velocity, with the discussion highlighting the criterion for reliable measurements. We report an approach and a set of procedures that significantly enhance particle velocity measurement using a DDA accurately and economically. A new scarring analysis method was conducted to identify the intricacies of how the instrument’s geometries affect the velocity calculation. The DDA results were validated using state-of-the-art laser Doppler velocimetry equipment (LDV), with an agreement of -2.8% on average. Please refer to https://doi.org/10.1016/j.triboint.2024.110439