Interaction of exhaled aerosol particles with the flow field of an air curtain

Kohl, Andreas and Schmeling, Daniel and Wagner, Claus (2023) Interaction of exhaled aerosol particles with the flow field of an air curtain. In: 10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023, pp. 1-11. Begell House. 10th International Symposium on Turbulence, Heat and Mass Transfer 2023, 2023-09-11 - 2023-09-15, Rom, Italien. doi: 10.1615/ICHMT.THMT-23.410. ISBN 978-156700534-9. ISSN 2642-5629.

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Abstract

Efficient removal of airborne pathogens is a key feature of ventilation concepts. A promising approach to control and prevent aerosol spreading in indoor environments is the air curtain, a planar turbulent jet that prevents air exchange between two volumes. Therefore, we investigate the interaction of aerosol particles of the size of typical human exhalation with the turbulent flow field of the air curtain. First, we evaluate the velocity field and the turbulence intensity distribution generated by the air curtain. Further, we investigate the resulting spatial aerosol particle concentration distribution for two different air curtain configurations. The effectiveness of both configurations against aerosol passage is evaluated using a particle-based air curtain effectiveness and shows local advantages of up to 13.5% for the higher flow rate.

Item URL in elib:

https://elib.dlr.de/197348/

Document Type:

Conference or Workshop Item (Speech)

Additional Information:

ISBN: 978-1-56700-534-9 ISBN Online: 978-1-56700-535-6 ISSN: 2377-4169 ISSN Online: 2377-2816

Title:

Interaction of exhaled aerosol particles with the flow field of an air curtain

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Kohl, Andreas	Andreas.Kohl (at) dlr.de	https://orcid.org/0000-0001-8351-7256	148320977
Schmeling, Daniel	Daniel.Schmeling (at) dlr.de	https://orcid.org/0000-0003-2712-9974	UNSPECIFIED
Wagner, Claus	claus.wagner (at) dlr.de	https://orcid.org/0000-0003-2273-0568	UNSPECIFIED

Date:

September 2023

Journal or Publication Title:

10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023

Refereed publication:

Yes

Open Access:

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

DOI:

10.1615/ICHMT.THMT-23.410

Page Range:

pp. 1-11

Publisher:

Begell House

Series Name:

ICHMT Digital Library

ISSN:

2642-5629

ISBN:

978-156700534-9

Status:

Published

Keywords:

air curtain, aerosol, human exhalation, pathogene removal, air curtain effectiveness, tubulent planar jet, GANDALF

Event Title:

10th International Symposium on Turbulence, Heat and Mass Transfer 2023

Event Location:

Rom, Italien

Event Type:

international Conference

Event Start Date:

11 September 2023

Event End Date:

15 September 2023

Organizer:

International Centre for Heat and Mass Transfer; Sapienza Università di Roma; Technische Universiteit Delft; Osaka Metropolitan University

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Transport

HGF - Program Themes:

Rail Transport

DLR - Research area:

Transport

DLR - Program:

V SC Schienenverkehr

DLR - Research theme (Project):

V - RoSto - Rolling Stock

Location:

Göttingen

Institutes and Institutions:

Institute for Aerodynamics and Flow Technology > Ground Vehicles

Deposited By:

Kohl, Andreas

Deposited On:

08 Dec 2023 10:32

Last Modified:

10 Jul 2026 09:52

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