Erosion equations are usually obtained from experiments by impacting solid particles entrained in a gas or liquid on a target material. The erosion equations are utilized in CFD (Computational Fluid Dynamics) models to predict erosion damage caused by solid particle impingements. Many erosion equations are provided in terms of an erosion ratio. By definition, the erosion ratio is the mass loss of target material divided by the mass of impacting particles. The mass of impacting particles is the summation of (particle mass × number of impacts) of each particle. In erosion experiments conducted to determine erosion equations, some particles may impact the target wall many times and some other particles may not impact the target at all. Therefore, the experimental data may not reflect the actual erosion ratio because the mass of the sand that is used to run the experiments is assumed to be the mass of the impacting particles. CFD and particle trajectory simulations are applied in the present work to study effects of multiple impacts on developing erosion ratio equations. The erosion equation as well as the CFD-based erosion modeling procedure is validated against a variety of experimental data. The results show that the effect of multiple impacts is negligible in air cases. In water cases, however, this effect needs to be accounted for especially for small particles. This makes it impractical to develop erosion ratio equations from experimental data obtained for tests with sand in water or dense gases. Many factors affecting erosion damage are accounted for in various erosion equations. In addition to some well-studied parameters such as particle impacting speed and impacting angle, particle size also plays a significant role in the erosion process. An average particle size is usually used in analyzing experimental data or estimating erosion damage cases of practical interest. In petroleum production applications, however, the size of sand particles that are entrained in produced fluids can vary over a fairly broad range. CFD simulations are also performed to study the effect of particle size distribution. In CFD simulations, particle sizes are normally distributed with the mean equaling the average size of interest and the standard deviation varying over a wide range. Based on CFD simulations, an equation is developed and can be applied to account for the effect of the particle size distribution on erosion prediction for gases and liquids.
Skip Nav Destination
ASME/JSME 2007 5th Joint Fluids Engineering Conference
July 30–August 2, 2007
San Diego, California, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4288-6
PROCEEDINGS PAPER
Effects of Multiple Impacts and Size Distribution of Particles on Erosion Predictions Using CFD
Brenton S. McLaury,
Brenton S. McLaury
University of Tulsa, Tulsa, OK
Search for other works by this author on:
Siamack A. Shirzai
Siamack A. Shirzai
University of Tulsa, Tulsa, OK
Search for other works by this author on:
Yongli Zhang
University of Tulsa, Tulsa, OK
Brenton S. McLaury
University of Tulsa, Tulsa, OK
Siamack A. Shirzai
University of Tulsa, Tulsa, OK
Paper No:
FEDSM2007-37364, pp. 405-412; 8 pages
Published Online:
March 30, 2009
Citation
Zhang, Y, McLaury, BS, & Shirzai, SA. "Effects of Multiple Impacts and Size Distribution of Particles on Erosion Predictions Using CFD." Proceedings of the ASME/JSME 2007 5th Joint Fluids Engineering Conference. Volume 1: Symposia, Parts A and B. San Diego, California, USA. July 30–August 2, 2007. pp. 405-412. ASME. https://doi.org/10.1115/FEDSM2007-37364
Download citation file:
6
Views
Related Proceedings Papers
Related Articles
Modelling Particulate Deposition in Gas Turbines Part II: Prediction and Validation of Deposition Distributions
J. Turbomach (January,0001)
Study on the Influence of Sand Erosion Process on the Wear and Damage of Heat-Treated U75V Rail Steel
J. Tribol (August,2021)
Numerical Investigation of Erosive Wear of a Centrifugal Slurry Pump Due to Solid–Liquid Flow
J. Tribol (October,2021)
Related Chapters
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies
Advances in the Stochastic Modeling of Constitutive Laws at Small and Finite Strains
Advances in Computers and Information in Engineering Research, Volume 2
Later Single-Cylinder Engines
Air Engines: The History, Science, and Reality of the Perfect Engine