Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System
The aim of this study is to develop a physical model and investigate the bactericidal effect of an automated hand-washing system through numerical computation, which is essential in areas affected by COVID-19 to ensure safety and limit the spread of the pandemic. The computational fluid dynamics app...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Computation |
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| Online Access: | https://www.mdpi.com/2079-3197/11/9/167 |
| _version_ | 1797580743435616256 |
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| author | Thanh-Long Le Thi-Hong-Nhi Vuong Tran-Hanh Phung |
| author_facet | Thanh-Long Le Thi-Hong-Nhi Vuong Tran-Hanh Phung |
| author_sort | Thanh-Long Le |
| collection | DOAJ |
| description | The aim of this study is to develop a physical model and investigate the bactericidal effect of an automated hand-washing system through numerical computation, which is essential in areas affected by COVID-19 to ensure safety and limit the spread of the pandemic. The computational fluid dynamics approach is used to study the movement of the solution inside the hand-washing chamber. The finite element method with the <i>k</i>-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ε</mi></mrow></semantics></math></inline-formula> model is applied to solve the incompressible Navier–Stokes equations. The numerical results provide insights into the solution’s hydrodynamic values, streamlines, and density in the two cases of with a hand and without a hand. The pressure and mean velocity of the fluid in the hand-washing chamber increases when the inlet flow rates increase. When the hand-washing chamber operates, it creates whirlpools around the hands, which remove bacteria. In addition, the liquid inlet flow affects the pressure in the hand-washing chamber. The ability to predict the hydraulic and cleaning performance efficiencies of the hand-washing chamber is crucial for evaluating its operability and improving its design in the future. |
| first_indexed | 2024-03-10T22:54:12Z |
| format | Article |
| id | doaj.art-64b77bea7c49467bb05273eb5f5c039e |
| institution | Directory Open Access Journal |
| issn | 2079-3197 |
| language | English |
| last_indexed | 2024-03-10T22:54:12Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Computation |
| spelling | doaj.art-64b77bea7c49467bb05273eb5f5c039e2023-11-19T10:07:01ZengMDPI AGComputation2079-31972023-08-0111916710.3390/computation11090167Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing SystemThanh-Long Le0Thi-Hong-Nhi Vuong1Tran-Hanh Phung2Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, VietnamVietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City 700000, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, VietnamThe aim of this study is to develop a physical model and investigate the bactericidal effect of an automated hand-washing system through numerical computation, which is essential in areas affected by COVID-19 to ensure safety and limit the spread of the pandemic. The computational fluid dynamics approach is used to study the movement of the solution inside the hand-washing chamber. The finite element method with the <i>k</i>-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ε</mi></mrow></semantics></math></inline-formula> model is applied to solve the incompressible Navier–Stokes equations. The numerical results provide insights into the solution’s hydrodynamic values, streamlines, and density in the two cases of with a hand and without a hand. The pressure and mean velocity of the fluid in the hand-washing chamber increases when the inlet flow rates increase. When the hand-washing chamber operates, it creates whirlpools around the hands, which remove bacteria. In addition, the liquid inlet flow affects the pressure in the hand-washing chamber. The ability to predict the hydraulic and cleaning performance efficiencies of the hand-washing chamber is crucial for evaluating its operability and improving its design in the future.https://www.mdpi.com/2079-3197/11/9/167numerical computationcomputational fluid dynamicshydrodynamic valueshand-washing chamber |
| spellingShingle | Thanh-Long Le Thi-Hong-Nhi Vuong Tran-Hanh Phung Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System Computation numerical computation computational fluid dynamics hydrodynamic values hand-washing chamber |
| title | Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System |
| title_full | Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System |
| title_fullStr | Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System |
| title_full_unstemmed | Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System |
| title_short | Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System |
| title_sort | numerical computation of hydrodynamic characteristics of an automated hand washing system |
| topic | numerical computation computational fluid dynamics hydrodynamic values hand-washing chamber |
| url | https://www.mdpi.com/2079-3197/11/9/167 |
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