대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제13권2호
  • /
  • Pages.87-96
  • /
  • 1992
  • /
  • 1229-0807(pISSN)
  • /
  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
권호 표지

인공심장내의 혈류유동의 컴퓨터 시뮬레이션

Numerical Simulation of Flow in a Total Artificial Heart

  • 김상현 (연세대학교 의과대학 의용공학과) ;
  • ;
  • K.B (Dept. of Biomedical Eng., Univ. of Iowa, Dept. of Mechanical Eng., Univ. of Iowa)
  • 발행 : 1992.06.01
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초록

In thIns paper, a numerical simulation of steady laminar and turbulent flow in a two dimensional model for the total artificial heart is'presented. A trlleaflet polyurethane valve was simulated at the outflow orifice while the Inflow orifice had a trileaflet or a flap valve. The finite analytic numerical method was employed to obtain solutions to the governing equations in the Cartesian coordinates. The closure for turbulence model was achieved by employing the k-$\varepsilon$-E model. The SIMPLER algo rithm was used to solve the problem in primitive variables. The numerical solutions of the slulated model show that regions of relative stasis and trapped vortices were smaller within the ventricular chamber with the flap valve at the Inflow orifice than that with the trileaflet valve. The predicted Reynolds stresses distal to the inflow valve within the ventricular chamber were also found to be smaller wlth the flap valve than with the trlleaflet valve. These resu1ts also suggest a correlation be- tween high turbulent stresses and the presence of thrombus In the vicinity of the valves in the total artificial hearts. The computed velocity vectors and trubulent stresses were comparable with previ ously reported in vitro measurements in artificial heart chambers. Analysis of the numerical solo talons suggests that geometries similar to the flap valve(or a tilting disc valve) results in a better flow dynamics within the total artificial heart chamber compared to a trileaflet valve.

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참고문헌

  1. Art. Org. v.13 In vitro comparison fo velocity profiles and turbulent shear distal to polyurethane trileaflet and Pericardial prosthetic valves Chandran,K.B.;Fatemi,R.;Schoephoerster,R.;Wurzel,D.;Hansen,G.;Pantalos,G.;Yu,L.S.;Kolff,W.F.
  2. ASAIO Trans. v.35 Hemodynamic comparisons of polyurethane trileaflet and bioprosthetic heart valves Chandran,K.B.;Schoepheorster,R.T.;Wurzel,D.;Hansen,G.;Yu,L.S.;Pantalos,G.;Kolff,W.J.
  3. Art. Org. In vitro hemodynamic analysis of flexible artificial ventricles Chandran,K.B;Lee,C.S.;Shipkowiz,T.;Yu,L.S.;Wurzel,D.
  4. Finite analytic method, Handbook of numerical heat transfer Chen,C.J.
  5. Prediction of turbulent flows in rectangular cavity with k-ε-A and E-ε-A models, Turbulence measurements and flow modelling Chen,C.J.;Chang,S.M.;Chen,C.J.(ed.);Chen,L.D.(ed.);Hooley,F.M.(ed.)
  6. J. Comp. Physics v.53 Finite analytic numerical method for unsteady two dimensional Navier-Stokes equations Chen,C.J.;Chen,H.C.
  7. J. Biomed. Eng. v.12 Wall shear stress distribution along the cups of a trileaflet prosthetic valve Einav,S.;Stolero,D.;Avidor,J.M.(et al.)
  8. Biorheology v.27 Interim use of Jarvik-7 and Novacor artificial heart : blood rheology and transient ischemic attacks(TIA'S) Hung,T.C.;Butter,C.L.;Yie,C.L.;Sun,Z.;Borovetz,H.S.;Kormos,R.L.Griffith,B.P.
  9. Trans. ASAIO v.22 Shear induced aggregation and lysis of platelets Hung,T.C.;Hochmuth,R.M.;Joist,J.H.;Sutera,S.P.
  10. Trans. ASAIO v.37 An in vitro evaluation of an artificial heart Jarvis,P.;Tarbell,J.M.;Frangos,J.A.
  11. PH.D. dissertation, University of Iowa Finite analytic numerical solution of laminar and turbulent flow in a two dimensional artifical heart model Kim,S.H.
  12. Art. Org. v.10 Thromboembolic complications of the Jarvik-7 total artificial heart : case report Levinson,M.M.;Smith,R.G.;Cork,R.C.;Gallo,J.;Emery,R.W.;Icenogle,T.B.;Ott,r.A.;Burns,G.L.;Copeland,J.G.
  13. Numerical heart transfer and fluid flow Patankar,S.V.
  14. J. Comp. Physics. v.81 A three-dimensional computational method for blood flow in the heart : Ⅰ. immersed elastic fibers in a viscous incompressible fluid Peskin,S.V.
  15. ASAIO Trans. v.25 Laser Doppler anemometer studies in unsteady ventricular flows Philips,W.M.;Furkay,S.S.;Pierce,W.S.
  16. 27th Aerospace Science Meeting Numerical solution of the incompressible Navier-Stokes equations for steady-state and time-dependent problems Rogers,S.E.;Kwak,D.;Kris,C.
  17. Biorheology v.21 Human RBC hemolysis in a turbulent shear flow : Contribution of Reynolds shear stresses Sallamm,A.M.;Huang,H.C.
  18. Cir. Res. v.35 Measured turbulence and its effect on thrombus formation Stein,P.D.;Sabbah,H.N.
  19. J. Biomech v.18 Numerical simulation of steady turbulent flow through trileaflet aortic heart valves Stevenson,D.M.;Yoganathan,A.P.
  20. Cir. Res. v.41 Flow-induced trauma to blood cells Sutera,S.P.
  21. Biophysical. J. v.15 Determination fragmentation of human red blood cells in turbulent shear flow Sutera,S.P.;Mehrjardi,M.H.
  22. J. Biomech. Eng. v.108 Pulsed ultrasonic Doppler velocity measurements inside a left ventricular assist devices Tarbell,J.M.;Gunishan,J.P.;Geselowitz,D.B.;Rosenberg,G.;Shung,K.K.;Pierce,W.S.
  23. Trans. ASAIO v.21 Platelet deposition on subendothelium exposed to flowing blood : Mathematical analysis of physical parameters Yurrito,V.T.;Baumgartner,H.R.
  24. Biorheology v.22 Towards a concept of thrombus in accelerated flow : Rheology, fluid dunamics, and biochemistry Voisin,P.;Guimont,C.;Stoltz,J.F.
  25. J. Biomech. v.19 Turbulent shear stress measurements in the vicinity of aortic heart valve prostheses Yoganathan,A.P.;Woo,Y.;Sung,H.