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An overview of recent applications of computational modelling in neonatology.

Wrobel LC, Ginalski MK, Nowak AJ, Ingham DB, Fic AM - Philos Trans A Math Phys Eng Sci (2010)

Bottom Line: This paper reviews some of our recent applications of computational fluid dynamics (CFD) to model heat and mass transfer problems in neonatology and investigates the major heat and mass-transfer mechanisms taking place in medical devices, such as incubators, radiant warmers and oxygen hoods.It is shown that CFD simulations are very flexible tools that can take into account all modes of heat transfer in assisting neonatal care and improving the design of medical devices.

View Article: PubMed Central - PubMed

Affiliation: School of Engineering and Design, Brunel University, Uxbridge UB8 3PH, UK. luiz.wrobel@brunel.ac.uk

ABSTRACT
This paper reviews some of our recent applications of computational fluid dynamics (CFD) to model heat and mass transfer problems in neonatology and investigates the major heat and mass-transfer mechanisms taking place in medical devices, such as incubators, radiant warmers and oxygen hoods. It is shown that CFD simulations are very flexible tools that can take into account all modes of heat transfer in assisting neonatal care and improving the design of medical devices.

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Related in: MedlinePlus

Contours of oxygen mole fraction plotted at different stages of the respiration cycle (adapted from Ginalski et al. (2008) with permission from IOP Publishing).
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RSTA20100052F4: Contours of oxygen mole fraction plotted at different stages of the respiration cycle (adapted from Ginalski et al. (2008) with permission from IOP Publishing).

Mentions: The numerical simulation was performed for a time interval of 25 min of regular breathing, and aimed at demonstrating the potential capabilities of CFD techniques for transient modelling of the respiration process. Hence, the results obtained at this point have not been validated. However, several important conclusions can be obtained. For example, the oxygen concentrations in the air provided to the oxygen hood and in the air inhaled by the infant are considerably different. The respiration pattern and other related parameters will also influence the oxygen concentration in the inhaled air. CFD techniques can help in determining the level of oxygen concentration and the optimum position of the infant’s head under the hood. Figure 4 shows a sequence of snapshots of the oxygen mole fraction during the expiration stage. The snapshots have been taken at the 25th minute of the simulation. Similar distributions were also obtained for carbon dioxide. In comparison with oxygen, carbon dioxide dissipates quickly within the domain. Hence, the concentration profile of this gas is much more homogeneous, confirming that the oxygen hood is properly ventilated.


An overview of recent applications of computational modelling in neonatology.

Wrobel LC, Ginalski MK, Nowak AJ, Ingham DB, Fic AM - Philos Trans A Math Phys Eng Sci (2010)

Contours of oxygen mole fraction plotted at different stages of the respiration cycle (adapted from Ginalski et al. (2008) with permission from IOP Publishing).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2944385&req=5

RSTA20100052F4: Contours of oxygen mole fraction plotted at different stages of the respiration cycle (adapted from Ginalski et al. (2008) with permission from IOP Publishing).
Mentions: The numerical simulation was performed for a time interval of 25 min of regular breathing, and aimed at demonstrating the potential capabilities of CFD techniques for transient modelling of the respiration process. Hence, the results obtained at this point have not been validated. However, several important conclusions can be obtained. For example, the oxygen concentrations in the air provided to the oxygen hood and in the air inhaled by the infant are considerably different. The respiration pattern and other related parameters will also influence the oxygen concentration in the inhaled air. CFD techniques can help in determining the level of oxygen concentration and the optimum position of the infant’s head under the hood. Figure 4 shows a sequence of snapshots of the oxygen mole fraction during the expiration stage. The snapshots have been taken at the 25th minute of the simulation. Similar distributions were also obtained for carbon dioxide. In comparison with oxygen, carbon dioxide dissipates quickly within the domain. Hence, the concentration profile of this gas is much more homogeneous, confirming that the oxygen hood is properly ventilated.

Bottom Line: This paper reviews some of our recent applications of computational fluid dynamics (CFD) to model heat and mass transfer problems in neonatology and investigates the major heat and mass-transfer mechanisms taking place in medical devices, such as incubators, radiant warmers and oxygen hoods.It is shown that CFD simulations are very flexible tools that can take into account all modes of heat transfer in assisting neonatal care and improving the design of medical devices.

View Article: PubMed Central - PubMed

Affiliation: School of Engineering and Design, Brunel University, Uxbridge UB8 3PH, UK. luiz.wrobel@brunel.ac.uk

ABSTRACT
This paper reviews some of our recent applications of computational fluid dynamics (CFD) to model heat and mass transfer problems in neonatology and investigates the major heat and mass-transfer mechanisms taking place in medical devices, such as incubators, radiant warmers and oxygen hoods. It is shown that CFD simulations are very flexible tools that can take into account all modes of heat transfer in assisting neonatal care and improving the design of medical devices.

Show MeSH
Related in: MedlinePlus