TU Darmstadt / ULB / TUbiblio

Modeling and simulation of the disintegration process in ultrasonic standing wave atomizers

Reipschläger, O. ; Bothe, D. ; Monien, B. ; Prüss, J. ; Weigand, B. ; Warnecke, H.-J.
ed.: Lozano, A. (2002)
Modeling and simulation of the disintegration process in ultrasonic standing wave atomizers.
Conference or Workshop Item, Bibliographie

Item Type: Conference or Workshop Item
Erschienen: 2002
Editors: Lozano, A.
Creators: Reipschläger, O. ; Bothe, D. ; Monien, B. ; Prüss, J. ; Weigand, B. ; Warnecke, H.-J.
Type of entry: Bibliographie
Title: Modeling and simulation of the disintegration process in ultrasonic standing wave atomizers
Language: English
Date: 2002
Publisher: ILASS-Europe
Book Title: Proc. 18th Annual Conf. Liquid Atomization and Spray Systems
Alternative Abstract:
Alternative abstract Language

A numerical approach based on 3D Computational Fluid Dynamics (CFD) for the simulation of the interfacial dynamics during the disintegration process of liquid in a resonant ultrasonic field is presented. Because of different length- and timescales of the nonlinear sound field and droplet dynamics phenomena, a decoupling is necessary for numerical feasibility. In a first step oscillating pressure- and velocity fields of the ultrasonic fields are computed. Direct Numerical Simulations of the disintegration process are then performed with an advanced Volume of Fluid (VOF) – method. The latter is extended by interfacial momentum source terms, taking into account ultrasonic forces, which lead to disintegration of the liquid phase. To resolve the small-sized fluid structures numerically, very fine computational grids are necessary. Therefore, numerical simulations are performed with parallel computing techniques. Disintegration inside the ultrasonic field is investigated experimentally with high-speed photography. For comparison purposes between numerical and experimental results, an acoustic levitator is used as a less complex system to study the behaviour of single drops in a resonant sound field. Results obtained from numerical computations will serve for optimisation of the ultrasonic standing wave atomization (USWA) technique used for powder coating production and for application of fluid coatings of high viscosity

English
Divisions: 04 Department of Mathematics
04 Department of Mathematics > Analysis
04 Department of Mathematics > Analysis > Mathematical Modeling and Analysis
Zentrale Einrichtungen
04 Department of Mathematics > Mathematical Modelling and Analysis
Date Deposited: 20 Apr 2011 13:35
Last Modified: 07 Feb 2024 11:55
PPN:
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details