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Proceedings Papers

Numerical Simulation of Korotkoff Sounds

Toshiyuki Hayase, Satoru Hayashi, Yupeng Xia, Tadao Koizumi
Proc. ASME. IMECE97, Advances in Bioengineering, 93-94, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-0244
https://doi.org/10.1115/IMECE1997-0244
View Paper titled, Numerical Simulation of Korotkoff Sounds
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Topics: Blood, Blood pressure measurement, Computer simulation, Deformation, External pressure, Flow (Dynamics), Numerical analysis, Pipes, Pressure, Sphygmomanometers
Proceedings Papers

Analysis of Instability and Self-Excited Vibration for Collapsible Tube by Distributed Parameter Model

Satoru Hayashi, Toshiyuki Hayase, Yuji Miura
Proc. ASME. IMECE97, Advances in Bioengineering, 105-106, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-0250
https://doi.org/10.1115/IMECE1997-0250
View Paper titled, Analysis of Instability and Self-Excited Vibration for Collapsible Tube by Distributed Parameter Model
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Topics: Distributed parameter models, Vibration, Stability, Circuits, Differential equations, Eigenvalues, Flow (Dynamics), Flow separation, Nonlinear equations, Resistors
Proceedings Papers

Numerical Analysis for Flow in Partly Pressurized Collapsible Tube

Satoru Hayashi, Toshiyuki Hayase, Masaru Maruyama
Proc. ASME. IMECE98, Advances in Bioengineering, 55-56, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0028
https://doi.org/10.1115/IMECE1998-0028
View Paper titled, Numerical Analysis for Flow in Partly Pressurized Collapsible Tube
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Topics: Computer simulation, Flow (Dynamics), Numerical analysis
Proceedings Papers

Effect of Initial Tube Strain on Self-Excited Oscillation of Collapsible Tube Flow

Yupeng Xia, Toshiyuki Hayase, Satoru Hayashi, Tsuyoshi Hamaya
Proc. ASME. IMECE2000, Advances in Bioengineering, 117-118, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-2543
https://doi.org/10.1115/IMECE2000-2543
View Paper titled, Effect of Initial Tube Strain on Self-Excited Oscillation of Collapsible Tube Flow
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Topics: Flow (Dynamics), Oscillations, Blood vessels, Complex systems, Experimental analysis, Physiology, Silicone rubber, Tension, Unsteady flow
Proceedings Papers

Experimental Study on the Effects of Radial Dispersion of Spherical Particles on the Suspension Rheology

Misa Kawaguchi, Tomohiro Fukui, Kenichi Funamoto, Suguru Miyauchi, Toshiyuki Hayase
Proc. ASME. AJKFluids2019, Volume 5: Multiphase Flow, V005T05A061, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5322
https://doi.org/10.1115/AJKFluids2019-5322
View Paper titled, Experimental Study on the Effects of Radial Dispersion of Spherical Particles on the Suspension Rheology
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Topics: Particulate matter, Rheology
Proceedings Papers

Deformation of Stenotic Blood Vessel Model Made From Poly (Vinyl Alcohol) Hydrogel by Hydrostatic Pressure

Yasutomo Shimizu, Lei Liu, Hiroyuki Kosukegawa, Kenichi Funamoto, Toshiyuki Hayase, Toshio Nakayama, Makoto Ohta
Proc. ASME. IMECE2016, Volume 3: Biomedical and Biotechnology Engineering, V003T04A055, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-66657
https://doi.org/10.1115/IMECE2016-66657
View Paper titled, Deformation of Stenotic Blood Vessel Model Made From Poly (Vinyl Alcohol) Hydrogel by Hydrostatic Pressure
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Topics: Blood vessels, Deformation, Ethanol, Hydrogels, Hydrostatic pressure, Stiffness, Blood flow, Vessels, Diseases, Elasticity
Journal Articles

Fluid Vibration Induced by High-Shear-Rate Flow in a T-Junction

Gaku Tanaka, Ryuhei Yamaguchi, Hao Liu, Toshiyuki Hayase
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. August 2016, 138(8): 081103.
Paper No: FE-15-1418
https://doi.org/10.1115/1.4032935
Published Online: May 2, 2016
View Article titled, Fluid Vibration Induced by High-Shear-Rate Flow in a T-Junction
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Topics: Die cutting, Flow (Dynamics), Flow instability, Fluids, Junctions, Separation (Technology), Shear (Mechanics), Shearing (Deformation), Vibration, Vortices
Journal Articles

Numerical Analysis for Elucidation of Nonlinear Frictional Characteristics of a Deformed Erythrocyte Moving on a Plate in Medium Subject to Inclined Centrifugal Force

Takashi Oshibe, Toshiyuki Hayase, Kenichi Funamoto, Atsushi Shirai
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. December 2014, 136(12): 121003.
Paper No: BIO-14-1278
https://doi.org/10.1115/1.4028723
Published Online: October 17, 2014
View Article titled, Numerical Analysis for Elucidation of Nonlinear Frictional Characteristics of a Deformed Erythrocyte Moving on a Plate in Medium Subject to Inclined Centrifugal Force
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Topics: Centrifugal force, Computation, Equilibrium (Physics), Erythrocytes, Pressure, Flow (Dynamics), Flat plates, Glass, Numerical analysis, Friction
Journal Articles

Optimization of Strut Placement in Flow Diverter Stents for Four Different Aneurysm Configurations

Hitomi Anzai, Jean-Luc Falcone, Bastien Chopard, Toshiyuki Hayase, Makoto Ohta
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. June 2014, 136(6): 061006.
Paper No: BIO-13-1266
https://doi.org/10.1115/1.4027411
Published Online: May 6, 2014
View Article titled, Optimization of Strut Placement in Flow Diverter Stents for Four Different Aneurysm Configurations
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Topics: Aneurysms, Flow (Dynamics), Optimization, Stents, Inflow, Struts (Engineering)
Proceedings Papers

Numerical Experiment of MR-Measurement-Integrated Simulation of Steady Blood Flow in a Cerebral Aneurysm

Kenichi Funamoto, Yoshitsugu Suzuki, Toshiyuki Hayase, Takashi Kosugi, Haruo Isoda
Proc. ASME. SBC2008, ASME 2008 Summer Bioengineering Conference, Parts A and B, 1089-1090, June 25–29, 2008
Publisher: American Society of Mechanical Engineers
Paper No: SBC2008-193240
https://doi.org/10.1115/SBC2008-193240
View Paper titled, Numerical Experiment of MR-Measurement-Integrated Simulation of Steady Blood Flow in a Cerebral Aneurysm
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Topics: Aneurysms, Blood flow, Simulation, Magnetic resonance imaging, Computation, Computer simulation, Diseases, Flow (Dynamics), Magnetic resonance
Proceedings Papers

Effect of Neutrophils Retention Time in Capillaries on Increase in Their Concentration in a Lattice Capillary Network Model

Atsushi Shirai, Toshiyuki Hayase
Proc. ASME. SBC2007, ASME 2007 Summer Bioengineering Conference, 431-432, June 20–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: SBC2007-176717
https://doi.org/10.1115/SBC2007-176717
View Paper titled, Effect of Neutrophils Retention Time in Capillaries on Increase in Their Concentration in a Lattice Capillary Network Model
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Topics: Blood, Defense industry, Flow (Dynamics), Leukocytes, Lung, Network models
Proceedings Papers

Influence of Plaque Stiffness on Change of Blood Vessel Geometry Leading Hemodynamical Changes in PVA-H Stenosis Models

Yasutomo Shimizu, Shuya Shida, Kenichi Funamoto, Toshiyuki Hayase, Makoto Ohta
Proc. ASME. IMECE2012, Volume 2: Biomedical and Biotechnology, 455-460, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-87073
https://doi.org/10.1115/IMECE2012-87073
View Paper titled, Influence of Plaque Stiffness on Change of Blood Vessel Geometry Leading Hemodynamical Changes in PVA-H Stenosis Models
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Topics: Blood vessels, Geometry, Hemodynamics, Stiffness, Flow (Dynamics), Blood flow, Deformation, Hydrostatic pressure, Mechanical properties, Pressure
Proceedings Papers

Reproduction of Blood Flow Field by Numerical Simulation Integrated With Ultrasonic Measurement With Noise

Kenichi Funamoto, Toshiyuki Hayase, Yoshifumi Saijo, Tomoyuki Yambe
Proc. ASME. SBC2009, ASME 2009 Summer Bioengineering Conference, Parts A and B, 455-456, June 17–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: SBC2009-206596
https://doi.org/10.1115/SBC2009-206596
View Paper titled, Reproduction of Blood Flow Field by Numerical Simulation Integrated With Ultrasonic Measurement With Noise
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Topics: Blood flow, Computer simulation, Noise (Sound), Ultrasonic measurement, Simulation, Errors, Feedback, Signals, Transients (Dynamics)
Proceedings Papers

Hemodynamic Changes in the Left Atrium due to Atrial Fibrillation

Kenichi Funamoto, Ryo Koizumi, Toshiyuki Hayase, Muneichi Shibata, Tomoyuki Yambe
Proc. ASME. SBC2011, ASME 2011 Summer Bioengineering Conference, Parts A and B, 1131-1132, June 22–25, 2011
Publisher: American Society of Mechanical Engineers
Paper No: SBC2011-53817
https://doi.org/10.1115/SBC2011-53817
View Paper titled, Hemodynamic Changes in the Left Atrium due to Atrial Fibrillation
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Topics: Hemodynamics, Diseases, Fluid structure interaction, Shapes, Signals, Simulation, Thrombosis
Proceedings Papers

Visualization of Microcirculation Based on Brightness Variation in Contrast-Enhanced Ultrasound

Kenichi Funamoto, Toshiyuki Hayase, Tetsuya Kodama
Proc. ASME. SBC2010, ASME 2010 Summer Bioengineering Conference, Parts A and B, 219-220, June 16–19, 2010
Publisher: American Society of Mechanical Engineers
Paper No: SBC2010-19349
https://doi.org/10.1115/SBC2010-19349
View Paper titled, Visualization of Microcirculation Based on Brightness Variation in Contrast-Enhanced Ultrasound
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Topics: Brightness (Photometry), Ultrasound, Visualization, Tumors, Biological tissues, Blood vessels, Drugs, Echocardiography, Microbubbles, Pressure sensors
Proceedings Papers

Three-Dimensional Flow Analysis in VFP Type Artificial Heart by Unstructured Grid

Satoyuki Kawano, Takuma Kato, Kazuhiro Nakahashi, Atsushi Shirai, Toshiyuki Hayase, Tomoyuki Yambe, Shin-Ichi Nitta, Hiroyuki Hashimoto
Proc. ASME. PVP2002, Computational Technologies for Fluid/Thermal/Structural/Chemical Systems With Industrial Applications, Volume 1, 229-238, August 5–9, 2002
Publisher: American Society of Mechanical Engineers
Paper No: PVP2002-1556
https://doi.org/10.1115/PVP2002-1556
View Paper titled, Three-Dimensional Flow Analysis in VFP Type Artificial Heart by Unstructured Grid
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Topics: Artificial hearts, Flow (Dynamics), Blood, Blood flow, Swirling flow, Compressibility, Computation, Design, Finite volume methods, Pumps
Journal Articles

Frictional Characteristics of Erythrocytes on Coated Glass Plates Subject to Inclined Centrifugal Forces

Takashi Kandori, Toshiyuki Hayase, Kousuke Inoue, Kenichi Funamoto, Takanori Takeno, Makoto Ohta, Motohiro Takeda, Atsushi Shirai
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. October 2008, 130(5): 051007.
https://doi.org/10.1115/1.2948420
Published Online: July 14, 2008
View Article titled, Frictional Characteristics of Erythrocytes on Coated Glass Plates Subject to Inclined Centrifugal Forces
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Topics: Blood, Centrifugal force, Erythrocytes, Friction, Glass, Microscopes, Plasmas (Ionized gases), Plates (structures), Polymers, Proteins
Proceedings Papers

Transit Characteristics of a Deformed Neutrophil Through a Moderate Constriction

Atsushi Shirai, Ryo Fujita, Toshiyuki Hayase
Proc. ASME. IMECE2003, Advances in Bioengineering, 133-134, November 15–21, 2003
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2003-55020
https://doi.org/10.1115/IMECE2003-55020
View Paper titled, Transit Characteristics of a Deformed Neutrophil Through a Moderate Constriction
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Topics: Geometry, Pipelines, Shapes
Journal Articles

Numerical Simulation of Noninvasive Blood Pressure Measurement

Satoru Hayashi, Toshiyuki Hayase, Atsushi Shirai, Masaru Maruyama
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. October 2006, 128(5): 680–687.
https://doi.org/10.1115/1.2241592
Published Online: February 23, 2006
View Article titled, Numerical Simulation of Noninvasive Blood Pressure Measurement
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Topics: Blood pressure measurement, Pressure, Flow (Dynamics), Pipes, Oscillations, Computer simulation
Journal Articles

Variation of Wall Shear Stress and Periodic Oscillations Induced in the Right-Angle Branch During Laminar Steady Flow

Ryuhei Yamaguchi, Takeshi Mashima, Hideaki Amagai, Hisashi Fujii, Toshiyuki Hayase, Kazuo Tanishita
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. September 2005, 127(5): 1013–1020.
https://doi.org/10.1115/1.1852480
Published Online: September 19, 2005
View Article titled, Variation of Wall Shear Stress and Periodic Oscillations Induced in the Right-Angle Branch During Laminar Steady Flow
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Topics: Flow (Dynamics), Oscillations, Shear stress, Separation (Technology), Flow visualization, Corners (Structural elements)