Abrasive medium classification and CFD simulations for low-pressure abrasive water-jet blasting

Özkaya, E.1, a; Bayraktar, E.2, b; Turek, S.2, c; Biermann, D.1, d

1)
Institut für Spanende Fertigung, Technische Universität Dortmund, Baroper Str. 303, 44227 Dortmund
2)
Institut für Angewandte Mathematik (LS 3), TU Dortmund, Vogelpothsweg 87, 44227 Dortmund

a) oezkaya@isf.de; b) ebayrakt@mathematik.uni-dortmund.de; c) stefan.turek@mathematik.tu-dortmund.de; d) biermann@isf.de

Kurzfassung

This study concerns the determination of the significant factors for an innovative deburring process: low pressure abrasive water-jet blasting. We firstly classify the abrasive medium aluminum oxide (Al2O3) according to the individual characteristics of different grain sizes. Then, the particle behavior in the air jet is analyzed with an optical measuring method, Particle Image Velocimetry (PIV); the velocity profile and the particle distribution of the dispersed system are obtained. Computational Fluid Dynamics (CFD) simulations were verified by comparing the experimental and numerical results, and we could specify the velocity range for the abrasive particles.

Schlüsselwörter

Abrasive particles, deburring, micro machining, computational fluid dynamics, micro abrasive water-jet blasting

Veröffentlichung

Ergebnisberichte des Instituts für Angewandte Mathematik 469, Technische Universität Dortmund, 2013