Numerical Study on Variation of Feedback Methods in Ultrasonic-Measurement-Integrated Simulation of Blood Flow in the Aneurysmal Aorta
スポンサーリンク
概要
- 論文の詳細を見る
The complicated relationships between hemodynamics and aneurysms have been investigated intensively. However, existing methodologies have inherent limitations in providing real blood flow fields. The authors have proposed Ultrasonic-Measurement-Integrated (UMI) simulation, in which the feedback signals lead to convergence of the calculated blood flow structure to the real one even with incorrect boundary/initial conditions. In UMI simulation, determination of the feedback law is substantially important, but detailed particulars remain to be accounted for. In this paper, first, the effects of density of feedback points and feedback domains are systematically investigated. Improvement of computational accuracy in the feedback domain is achieved even in low density of feedback points of 25%, and such improvement persists in the downstream region. Secondly, the most effective combination of feedback gains for momentum and pressure equations is investigated, confirming the validity of the simple condition to use the same value for the velocity and pressure gains.
- 一般社団法人日本機械学会の論文
- 2006-03-15
著者
-
YAMBE Tomoyuki
Institute of Development, Aging and Cancer, Tohoku University
-
Yambe Tomoyuki
Institute Of Development Aging And Cancer Tohoku University
-
Saijo Yoshifumi
Tohoku Univ. Sendai Jpn
-
Saijo Yoshifumi
Institute Of Development Aging And Cancer Tohoku University
-
HAYASE Toshiyuki
Institute of Fluid Science, Tohoku University
-
FUNAMOTO Kenichi
Graduate School of Engineering, Tohoku University
-
Funamoto Kenichi
Graduate School Of Engineering Tohoku University
-
Saijo Yoshifumi
Department Of Medical Engineering And Cardiology Institute Of Development Aging And Cancer Tohoku Un
-
Hayase Toshiyuki
Institute Of Fluid Science Tohoku University
関連論文
- Project artificial myocardium
- Less invasive hemostatic forceps using superelastic SMAs
- Comparison of Brachial-Ankle Pulse Wave Velocity in Japanese and Russians
- Influence of Aging on Cardiac Function Examined by Echocardiography
- Validity of the Adaptive Filter for Accurate Measurement of Cardiac Output in Impedance Cardiography
- Transit Characteristics of a Neutrophil Passing through Two Moderate Constrictions in a Cylindrical Capillary Vessel : Effect of Cell Deformation on Transit through the Second Constriction(Bioengineering)
- Transit Characteristics of a Neutrophil Passing Through a Circular Constriction in a Cylindrical Capillary Vessel : Effect of Mechanical Properties of the Cell and Constriction Geometry(Reviewed Papers Accepted for Publication in this Special Issue)(Speci
- Nonpulsatile artificial baroreflex system
- Beat-to-Beat Evaluation of Systolic Time Intervals during Bicycle Exercise Using Impedance Cardiography
- Shape Memory Alloy Artificial Muscles for Treatments of Fecal Incontinence
- Artificial Baroreflex System Makes Deterministic Chaos
- An SMA Artificial Anal Sphincter Actuated by Transcutaneous Energy Transmission Systems
- 直動型ポペット弁回路の局所安定性(長い管路の場合)
- The Herbal Medicine Daikenchuto Increases Blood Flow in the Superior Mesenteric Artery
- PE-059 Two-dimensional Blood Flow Vector Imaging of Retardant Flow in Left Atrium(Echo/Doppler-08, The 71st Annual Scientific Meeting of the Japanese Circulation Society)
- OE-089 Development of IVUS Attenuation Imaging and Comparison with Multiple Parametric Imagings(Intravascular endoscopy/Intravascular ultrasound-1, The 71st Annual Scientific Meeting of the Japanese Circulation Society)
- FRS-093 Automatic Segmentation of IVUS Image by Self-organizing Map(Visualization of Atherosclerotic Plaque (I) FRS19,Featured Research Session (English),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)
- 3 From Estimation of Cardiac Function toward Prediction of Emotional State("State of the Art" Biomedical Technology Developed in Japan Will Inspire Intricate Applications in Cardiology in the 21st Century,Roundtable Discussion 7 (RT7) (I),The 70th Anniver
- Moment-based texture segmentation of luminal contour in intravascular ultrasound images
- Intravascular Two-dimensional Tissue Velocity Imaging of Vulnerable Plaque(Intravascular Endoscopy/Intravascular Ultrasound 4 (I), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- Development of New Diagnosis Tool for Evaluating Autonomic Function during Virtual Reality Immersion
- Numerical Study on Variation of Feedback Methods in Ultrasonic-Measurement-Integrated Simulation of Blood Flow in the Aneurysmal Aorta
- Two-Dimensional Computational Flow Analysis and Frictional Characteristics Model for Red Blood Cell under Inclined Centrifuge Microscopy(Bioengineering)
- Suppression of T-S Wave Using Wall Motion Actuator
- Development of the Totally Implantable Artificial Myocardium
- Biochemical evaluation of an artificial anal sphincter made from shape memory alloys
- Impact of Type A Behavior on Brachial-Ankle Pulse Wave Velocity in Japanese
- Ultrasonic sound speed microscope for biological tissue characterization driven by nanosecond pulse
- Dynamic Characteristics of Collapsible Tube Flow
- Numerical Analysis of Transient Flow through a Pipe Orifice : Time Constant for Settling Flow
- Fundamental Study of Hybrid Wind Tunnel Integrating Numerical Simulation and Experiment in Analysis of Flow Field
- Fundamental Study of Aerodynamic Drag Reduction for Vehicle with Feedback Flow Control
- Local Stability of Direct-Acting Poppet Valve Circuit
- Measurements of Dynamic Viscoelasticity of Poly (vinyl alcohol) Hydrogel for the Development of Blood Vessel Biomodeling
- Engineering analysis of the effects of bulging sinuses in a newly designed pediatric pulmonary heart valve on hemodynamic function
- Implementation of visual data mining for unsteady blood flow field in an aortic aneurysm
- Observations on the Springtail Leaping Organ and Jumping Mechanism Worked by a Spring
- The Kinematics of Jumping of Globular Springtail
- Analysis of Flow Characteristics of Turbulent Plane Jets Based on Velocity and Scalar Fields Using DNS
- Application of a Telemedical Tool in an Isolated Island and a Disaster Area of the Great East Japan Earthquake
- Numerical Experiment for Ultrasonic-Measurement-Integrated Simulation of Developed Laminar Pipe Flow Using Axisymmetric Model
- Preface
- Application of a Telemedical Tool in an Isolated Island and a Disaster Area of the Great East Japan Earthquake
- Take-off Flight of the Butterfly Colias erate Esper