An improved simulation methodology for nanoparticle injection through aerodynamic lens systems

Publication date
2025-03-26
Document type
Research article
Author
Samanta, Amit K.
Amin, Muhamed
Küpper, Jochen
Organisational unit
DOI
URI
ISSN
Project
DASHH Graduate School
Series or journal
Physics of Fluids
Periodical volume
37
Periodical issue
3
Peer-reviewed
✅
Part of the university bibliography
✅
DDC Class
000 Informatik, Information & Wissen, allgemeine Werke
500 Naturwissenschaften
600 Technik
Keyword
Nanoparticle injection
Aerodynamic lens system
Direct simulation Monte Carlo (DSMC)
Computational fluid dynamics (CFD)
Abstract
Aerosol injectors applied in single-particle diffractive imaging experiments demonstrated their potential in efficiently delivering nanoparticles with high density. Continuous optimization of injector design is crucial for achieving high-density particle streams, minimizing background gas, enhancing x-ray interactions, and generating high-quality diffraction patterns. We present an updated simulation framework designed for the fast and effective exploration of the experimental parameter space to enhance the optimization process. The framework includes both the simulation of the carrier gas and the particle trajectories within injectors and their expansion into the experimental vacuum chamber. A hybrid molecular-continuum-simulation method [direct simulation Monte Carlo (DSMC)/computational fluid dynamics (CFD)] is utilized to accurately capture the multi-scale nature of the flow. The simulation setup, initial benchmark results of the coupled approach, and the validation of the entire methodology against experimental data are presented. The results of the enhanced methodology show a significant improvement in the prediction quality compared to previous approaches.
Description
All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Cite as
Phys. Fluids 37, 033380 (2025); doi: 10.1063/5.0260295
Version
Published version
Access right on openHSU
Metadata only access