{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T10:43:46Z","timestamp":1769165026203,"version":"3.49.0"},"reference-count":32,"publisher":"ASME International","issue":"3","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2008,6,1]]},"abstract":"<jats:p>The influence of time-dependent flows on oxygen transport from hollow fibers was computationally and experimentally investigated. The fluid average pressure drop, a measure of resistance, and the work required by the heart to drive fluid past the hollow fibers were also computationally explored. This study has particular relevance to the development of an artificial lung, which is perfused by blood leaving the right ventricle and in some cases passing through a compliance chamber before entering the device. Computational studies modeled the fiber bundle using cylindrical fiber arrays arranged in in-line and staggered rectangular configurations. The flow leaving the compliance chamber was modeled as dampened pulsatile and consisted of a sinusoidal perturbation superimposed on a steady flow. The right ventricular flow was modeled to depict the period of rapid flow acceleration and then deceleration during systole followed by zero flow during diastole. Experimental studies examined oxygen transfer across a fiber bundle with either steady, dampened pulsatile, or right ventricular flow. It was observed that the dampened pulsatile flow yielded similar oxygen transport efficiency to the steady flow, while the right ventricular flow resulted in smaller oxygen transport efficiency, with the decrease increasing with Re. Both computations and experiments yielded qualitatively similar results. In the computational modeling, the average pressure drop was similar for steady and dampened pulsatile flows and larger for right ventricular flow while the pump work required of the heart was greatest for right ventricular flow followed by dampened pulsatile flow and then steady flow. In conclusion, dampening the artificial lung inlet flow would be expected to maximize oxygen transport, minimize work, and thus improve performance.<\/jats:p>","DOI":"10.1115\/1.2907752","type":"journal-article","created":{"date-parts":[[2008,5,12]],"date-time":"2008-05-12T15:16:04Z","timestamp":1210605364000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":19,"title":["Pulsatile Flow and Oxygen Transport Past Cylindrical Fiber Arrays for an Artificial Lung: Computational and Experimental Studies"],"prefix":"10.1115","volume":"130","author":[{"given":"Jennifer R.","family":"Zierenberg","sequence":"first","affiliation":[{"name":"Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-2099"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hideki","family":"Fujioka","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-2099"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keith E.","family":"Cook","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-2099; Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI 48109-2099"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James B.","family":"Grotberg","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-2099"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"33","published-online":{"date-parts":[[2008,5,9]]},"reference":[{"issue":"4","key":"2019100512454592800_c1","doi-asserted-by":"publisher","first-page":"316","DOI":"10.1097\/00002480-200107000-00003","article-title":"Development of an Implantable Artificial Lung: Challenges and Progress","volume":"47","author":"Zwischenberger","journal-title":"ASAIO J.","ISSN":"https:\/\/id.crossref.org\/issn\/1058-2916","issn-type":"print"},{"issue":"4","key":"2019100512454592800_c2","doi-asserted-by":"crossref","first-page":"253","DOI":"10.1191\/0267659102pf586oa","article-title":"Artificial Lungs: A New Inspiration","volume":"17","author":"Zwischenberger","journal-title":"Perfusion","ISSN":"https:\/\/id.crossref.org\/issn\/0267-6591","issn-type":"print"},{"issue":"2","key":"2019100512454592800_c3","doi-asserted-by":"publisher","first-page":"202","DOI":"10.1115\/1.2485961","article-title":"Pulsatile Blood Flow and Oxygen Transport Past a Circular Cylinder","volume":"129","author":"Zierenberg","journal-title":"ASME J. 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