Crocker, L E; Smith, N (2016) Parametric study on erosion rig nozzle. NPL Report. MAT 79

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Abstract

A new high temperature solid particulate erosion test system has been designed at the National Physical Laboratory to improve the quality of high temperature erosion tests. The new test system is designed to carry out experiments at temperatures up to 900 °C and particle velocities up to 300 m/s. This was achieved through the careful design of the nozzle, balancing the gas flow, gas pressure and nozzle geometry to achieve the design goals.

The nozzle model has been extended to include the sample and air within the erosion rig chamber to allow predictions of the gas exiting the nozzle and impacting the sample. The model for this nozzle and an alternative nozzle designed by Ricerca sul Sistema Energetico (RSE) have been used to run parametric studies to investigate the effect of temperature, inlet pressure, stand-off distance and impact angle on the gas velocities reaching the sample. The results have also been compared to complimentary modelling work involving predicting the erosion caused by a single particle impact.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	MAT 79
Subjects:	Advanced Materials Advanced Materials > Materials Modelling
Last Modified:	02 Feb 2018 13:13
URI:	http://eprintspublications.npl.co.uk/id/eprint/6981

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