A CFD study of a pin-on-disc tribometer setup focusing on airborne particle sampling efficiency
Riva, Gabriele ; Wahlström, Jens LU
; Alemani, Mattia
and Olofsson, Ulf
(2017)
6th European Conderence on Tribology, ECOTRIB 2017
- Abstract
- One of the most important measures to evaluate air quality is the presence of particles. Pin-on-disc tribometers are used to study airborne wear particles originating from different sliding contacts in a controlled laboratory environment. One important aspect when measuring airborne particles is to ensure isokinetic sampling conditions. Another important aspect is that the concentration and the particles distribution entering the sampling probe are representative for the emissions generated. It is therefore important to have an estimation of the sampling efficiency of the test system. The aim of this paper is to investigate the particle sampling efficiency of a pin-on-disc tribometer setup. In addition, a modified sampling setup that... (More)
- One of the most important measures to evaluate air quality is the presence of particles. Pin-on-disc tribometers are used to study airborne wear particles originating from different sliding contacts in a controlled laboratory environment. One important aspect when measuring airborne particles is to ensure isokinetic sampling conditions. Another important aspect is that the concentration and the particles distribution entering the sampling probe are representative for the emissions generated. It is therefore important to have an estimation of the sampling efficiency of the test system. The aim of this paper is to investigate the particle sampling efficiency of a pin-on-disc tribometer setup. In addition, a modified sampling setup that allows isokinetic sampling is investigated. CFD simulations to investigate air and particle motion were performed for both the existing and the modified configuration. The results show that the velocity field at the outlet does not allow isokinetic sampling for the existing configuration. In the modified configuration a sampling pipe is used to make isokinetic sampling possible. A comparison between the two configurations show that the modified configuration increases the sampling efficiency with almost 40% for ultrafine particles and about 20% for fine and coarse particles. It remains to validate the CFD simulations with experiments. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/d0d588ef-02f2-4c33-ba40-0df1bd6b17e2
- author
- Riva, Gabriele
; Wahlström, Jens
LU
; Alemani, Mattia
and Olofsson, Ulf
- publishing date
- 2017
- type
- Contribution to conference
- publication status
- published
- subject
- conference name
- 6th European Conderence on Tribology, ECOTRIB 2017
- conference location
- Ljubljana, Slovenia
- conference dates
- 2017-06-07 - 2017-06-09
- language
- English
- LU publication?
- no
- id
- d0d588ef-02f2-4c33-ba40-0df1bd6b17e2
- date added to LUP
- 2021-12-10 10:24:26
- date last changed
- 2022-01-11 08:07:23
@misc{d0d588ef-02f2-4c33-ba40-0df1bd6b17e2,
abstract = {{One of the most important measures to evaluate air quality is the presence of particles. Pin-on-disc tribometers are used to study airborne wear particles originating from different sliding contacts in a controlled laboratory environment. One important aspect when measuring airborne particles is to ensure isokinetic sampling conditions. Another important aspect is that the concentration and the particles distribution entering the sampling probe are representative for the emissions generated. It is therefore important to have an estimation of the sampling efficiency of the test system. The aim of this paper is to investigate the particle sampling efficiency of a pin-on-disc tribometer setup. In addition, a modified sampling setup that allows isokinetic sampling is investigated. CFD simulations to investigate air and particle motion were performed for both the existing and the modified configuration. The results show that the velocity field at the outlet does not allow isokinetic sampling for the existing configuration. In the modified configuration a sampling pipe is used to make isokinetic sampling possible. A comparison between the two configurations show that the modified configuration increases the sampling efficiency with almost 40% for ultrafine particles and about 20% for fine and coarse particles. It remains to validate the CFD simulations with experiments.}},
author = {{Riva, Gabriele and Wahlström, Jens and Alemani, Mattia and Olofsson, Ulf}},
language = {{eng}},
title = {{A CFD study of a pin-on-disc tribometer setup focusing on airborne particle sampling efficiency}},
year = {{2017}},
}