{"id":{"repo_id":"utc","oai_identifier":"oai:scholar.utc.edu:theses-1608"},"canonical_url":"https://search.dev.ndltd.org/etd/utc/oai:scholar.utc.edu:theses-1608","repository":{"repo_id":"utc","name":"University of Tennessee - Chattanooga","base_url":"https://scholar.utc.edu/do/oai/"},"display":{"title":"CFD simulation of the airflow through the human respiratory tract","abstract":"This study compares the effect of extra-thoracic airways (ETA) on the flow field through the lower airways by carrying out simulations of the airflow through the human respiratory tract. Three geometries, consisting of the ETA, CT-derived lower airway, and a combination of the two were utilized in simulations that were performed for transient breathing in addition to constant inspiration/expiration. Physiologically-appropriate regional ventilation for two different flow rates was induced at the distal boundaries by imposing appropriate lobar specific flow rates. Two breathing rates were considered, i.e., 7.5 and 15 breaths per minute with a tidal volume of 0.5 liter. For comparison, the flow rates for constant inspiration/expiration were selected to be identical to the peak flow rates during the transient breathing. Significant differences indicate that simulations that utilize constant inspiration or expiration may not be appropriate for gaining insight into the flow patterns through the human airways.","abstract_html":"This study compares the effect of extra-thoracic airways (ETA) on the flow field through the lower airways by carrying out simulations of the airflow through the human respiratory tract. Three geometries, consisting of the ETA, CT-derived lower airway, and a combination of the two were utilized in simulations that were performed for transient breathing in addition to constant inspiration/expiration. Physiologically-appropriate regional ventilation for two different flow rates was induced at the distal boundaries by imposing appropriate lobar specific flow rates. Two breathing rates were considered, i.e., 7.5 and 15 breaths per minute with a tidal volume of 0.5 liter. For comparison, the flow rates for constant inspiration/expiration were selected to be identical to the peak flow rates during the transient breathing. Significant differences indicate that simulations that utilize constant inspiration or expiration may not be appropriate for gaining insight into the flow patterns through the human airways.","abstract_has_math":false,"creators":["Azarnoosh, Jamasp"],"institution":"University of Tennessee at Chattanooga","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Sreenivas, Kidambi","Newman, James C. 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S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science."]},{"key":"dc:description.abstract","label":"Abstract","values":["This study compares the effect of extra-thoracic airways (ETA) on the flow field through the lower airways by carrying out simulations of the airflow through the human respiratory tract. Three geometries, consisting of the ETA, CT-derived lower airway, and a combination of the two were utilized in simulations that were performed for transient breathing in addition to constant inspiration/expiration. Physiologically-appropriate regional ventilation for two different flow rates was induced at the distal boundaries by imposing appropriate lobar specific flow rates. Two breathing rates were considered, i.e., 7.5 and 15 breaths per minute with a tidal volume of 0.5 liter. For comparison, the flow rates for constant inspiration/expiration were selected to be identical to the peak flow rates during the transient breathing. Significant differences indicate that simulations that utilize constant inspiration or expiration may not be appropriate for gaining insight into the flow patterns through the human airways."]},{"key":"dc:title","label":"Title","values":["CFD simulation of the airflow through the human respiratory tract"]}]}],"canonical_facts":{"dc:contributor":["Sreenivas, Kidambi","Newman, James C. III; Arabshahi, Abdollah","College of Engineering and Computer Science"],"dc:creator":["Azarnoosh, Jamasp"],"dc:date":["2016-08-01T07:00:00Z"],"dc:description":["Dept. of Computational Engineering","M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science."],"dc:description.abstract":["This study compares the effect of extra-thoracic airways (ETA) on the flow field through the lower airways by carrying out simulations of the airflow through the human respiratory tract. Three geometries, consisting of the ETA, CT-derived lower airway, and a combination of the two were utilized in simulations that were performed for transient breathing in addition to constant inspiration/expiration. Physiologically-appropriate regional ventilation for two different flow rates was induced at the distal boundaries by imposing appropriate lobar specific flow rates. Two breathing rates were considered, i.e., 7.5 and 15 breaths per minute with a tidal volume of 0.5 liter. For comparison, the flow rates for constant inspiration/expiration were selected to be identical to the peak flow rates during the transient breathing. Significant differences indicate that simulations that utilize constant inspiration or expiration may not be appropriate for gaining insight into the flow patterns through the human airways."],"dc:identifier":["https://scholar.utc.edu/theses/461"],"dc:language":["English","eng"],"dc:publisher":["University of Tennessee at Chattanooga","Chattanooga (Tenn.)"],"dc:relation":["Masters Theses and Doctoral Dissertations"],"dc:rights":["https://rightsstatements.org/page/InC/1.0/?language=en"],"dc:subject":["Computational fluid dynamics","Respiration","Human physiology","Biomedical engineering"],"dc:title":["CFD simulation of the airflow through the human respiratory tract"],"dc:type":["Masters theses","Text"]},"updated_at":"2026-07-24T05:46:28Z"}