Development and evaluation of a fluidic facemask for airborne transmission mitigation
© 2022 Elsevier Inc. All rights reserved..
Recently, a fluidic facemask concept was proposed to mitigate the transmission of virus-laden aerosol and droplet infections, such as SARS-CoV-2 (COVID-19). This paper describes an experimental investigation of the first practical fluidic facemask prototype, or "Air-Screen". It employs a small, high-aspect-ratio, crossflow fan mounted on the visor of a filter-covered cap to produce a rectangular air jet, or screen, in front of the wearer's face. The entire assembly weighs less than 200 g. Qualitative flow visualization experiments using a mannequin clearly illustrated the Air-Screen's ability to effectively block airborne droplets (∼100 µm) from the wearer's face. Quantitative experiments to simulate droplets produced during sneezing or a wet cough (∼102 µm) were propelled (via a transmitter) at an average velocity of 50 m/s at 1 m from the mannequin or a target. The Air-Screen blocked 62% of all droplets with a diameter of less than 150 µm. With an Air-Screen active on the transmitter, 99% of all droplets were blocked. When both mannequin and transmitter Air-Screens were active, 99.8% of all droplets were blocked. A mathematical model, based on a weakly-advected jet in a crossflow, was employed to gain greater insight into the experimental results. This investigation highlighted the remarkable blocking effect of the Air-Screen and serves as a basis for a more detailed and comprehensive experimental evaluation.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:141 |
|---|---|
| Enthalten in: |
Experimental thermal and fluid science - 141(2023) vom: 01. Feb., Seite 110777 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Keisar, David [VerfasserIn] |
|---|
| Links: |
|---|
| Anmerkungen: |
Date Revised 21.12.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1016/j.expthermflusci.2022.110777 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM346747058 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM346747058 | ||
| 003 | DE-627 | ||
| 005 | 20231226032205.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.expthermflusci.2022.110777 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1155.xml |
| 035 | |a (DE-627)NLM346747058 | ||
| 035 | |a (NLM)36158451 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Keisar, David |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Development and evaluation of a fluidic facemask for airborne transmission mitigation |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 21.12.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2022 Elsevier Inc. All rights reserved. | ||
| 520 | |a Recently, a fluidic facemask concept was proposed to mitigate the transmission of virus-laden aerosol and droplet infections, such as SARS-CoV-2 (COVID-19). This paper describes an experimental investigation of the first practical fluidic facemask prototype, or "Air-Screen". It employs a small, high-aspect-ratio, crossflow fan mounted on the visor of a filter-covered cap to produce a rectangular air jet, or screen, in front of the wearer's face. The entire assembly weighs less than 200 g. Qualitative flow visualization experiments using a mannequin clearly illustrated the Air-Screen's ability to effectively block airborne droplets (∼100 µm) from the wearer's face. Quantitative experiments to simulate droplets produced during sneezing or a wet cough (∼102 µm) were propelled (via a transmitter) at an average velocity of 50 m/s at 1 m from the mannequin or a target. The Air-Screen blocked 62% of all droplets with a diameter of less than 150 µm. With an Air-Screen active on the transmitter, 99% of all droplets were blocked. When both mannequin and transmitter Air-Screens were active, 99.8% of all droplets were blocked. A mathematical model, based on a weakly-advected jet in a crossflow, was employed to gain greater insight into the experimental results. This investigation highlighted the remarkable blocking effect of the Air-Screen and serves as a basis for a more detailed and comprehensive experimental evaluation | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Review | |
| 650 | 4 | |a Air Screen | |
| 650 | 4 | |a Airborne transmission | |
| 650 | 4 | |a CDC, Centers for Disease Control and Prevention | |
| 650 | 4 | |a ClO2, Chlorine dioxide | |
| 650 | 4 | |a DEHS, DiEthyl-Hexyl-Sebacate | |
| 650 | 4 | |a EUA, Emergency Use Authorizations | |
| 650 | 4 | |a Face mask | |
| 650 | 4 | |a Fluidic facemask | |
| 650 | 4 | |a HEPA, High-efficiency particulate air | |
| 650 | 4 | |a IGV, Inlet guide vane | |
| 650 | 4 | |a LES, Large eddy simulation | |
| 650 | 4 | |a NIOSH, US National Institute for Occupational Safety and Health | |
| 650 | 4 | |a PVDF, Polyvinylidene difluoride | |
| 650 | 4 | |a Personal protective equipment | |
| 650 | 4 | |a RANS, Reynolds-Averaged Navier Stokes | |
| 650 | 4 | |a SARS-CoV-2 | |
| 650 | 4 | |a WSP, Water-sensitive paper | |
| 700 | 1 | |a Garzozi, Anan |e verfasserin |4 aut | |
| 700 | 1 | |a Shoham, Moshe |e verfasserin |4 aut | |
| 700 | 1 | |a Greenblatt, David |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Experimental thermal and fluid science |d 2020 |g 141(2023) vom: 01. Feb., Seite 110777 |w (DE-627)NLM315540036 |x 1879-2286 |7 nnns |
| 773 | 1 | 8 | |g volume:141 |g year:2023 |g day:01 |g month:02 |g pages:110777 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.expthermflusci.2022.110777 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 141 |j 2023 |b 01 |c 02 |h 110777 | ||