INSTITUTE OF FLUID SCIENCE

TOHOKU UNIVERSITY

　

BIOFLUIDS CONTROL LABORATORY

OVERVIEW

　

1995-1999

CONTENTS

　　1.　　Overview
　　 　　2.　　Present Research Activity
　　3.　　Publication
　 　　4.　　Collaboration
　　 　　5.　　Activity in Scientific Society

　

1. 　Overview

　

Biofluid systems, such as the blood circulation in human body, are typical intelligent fluid systems characterized by their sophisticated control mechanisms. The flow states are optimized for the dynamically changing conditions of living body and environment. Our laboratory deals with complex flow problems due to interaction between blood flow and vessel deformation and flows in microcirculation focusing on their control mechanism. Understanding biofluid systems is essential not only in medical problems but also in engineering applications to develop intelligent fluid systems.

　

1.1 Staff (1995-1999)

Professor Satoru Hayashi

Associate Professor Toshiyuki Hayase

Research Associate Atsushi Shirai (1998- )

Research Associate Ikuro Iimura (1995-1997 )

Technician Tsuyoshi Hamaya

　

1.2 Research Fields

(1)　Dynamics of biofuluid flow

(2)　Dynamics of fluid control systems

(3)　Integration of numerical analysis and experiment

　

2. Present Research Activity

　

Modeling of Blood Flow in Pressure Measurement

The stethoscopy using the Korotkoff sounds is widely used as the indirect measurement of blood pressure. We perform the numerical analysis with the simplified mathematical model for the circulation of blood in the arm. The mechanism of Korotkoff sounds generation is also investigated.

　

Simulation of blood pressure measurement

　

Blood Flow Modeling in Fine Capillaries

The blood flow model in fine capillaries is investigated considering the deformation of red blood cells. The blood flow characteristics and the mass transfer between blood cells and surrounding tissues are also studied.

　

　

Computer simulation of red blood cell in fine capillary

　

Feedback Control of Flow Field

Feedback control system is studied for the flow field around an automobile with suction and blowing to control vortex structure resulting in the reduction of drag.

　

　

Drag reduction with feedback control of flow

　

Integration of CFD and Experimental Measurement in Flow Problems

Integration of CFD and experimental measurement is investigated to develop a new analysis methodology applicable for complex flow problems.

　

　

　

Concept of virtual measurement to integrate CFD and experimental measurement

　

Nonlinear Phenomena in Fluid Control Systems

Mechanisms of various kinds of chaotic vibration in fluid control systems are studied in relation to the nonlinear characteristics of the systems.

　

　

Chaotic vibration in fluid control system

　

3. Publication

　

3.1 Journal Papers (1999-1995)

　

  1. W. Wang, S. Hayashi, T. Hayase, A. Shirai：Chaotic Oscillations in a Direct-Acting Poppet Valve Circuit (Case of a Long Pipeline)，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese，Vol. 30, No. 5 (1999)，pp. 119−127．

  2. 　

  3. W. Wang, S. Hayashi, T. Hayase and A. Shirai：
Local Stability of a Direct-Acting Poppet Valve Circuit with a Long Pipeline，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese，Vol. 30, No. 3 (1999)，pp. 67−74．

　

  • T. Hayase：Monotonic Convergence Property of Turbulent Flow Solution with Central Difference and QUICK Schemes, Journal of Fluids Engineering, Transactions of the ASME, Vol. 121 (1999), pp. 351-358.

　

  • R. Yamaguchi, Y. Takase, S. Kudo, T. Hayase：Flow Visualization of Right Angle Branch in Laminar Steady Flow, Trans. Japan　Soc. Mech.　Eng., in Japanese（Ｂ）, 65, No. ，634 (1999), pp. 1986-1991.

　

  • Shirai, S. Hayashi, T. Hayase, W. Wang：Eigenvalue Analysis of Direct-Acting Poppet Valve Circuit，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese，Vol. 30, No. 3 (1999)，pp. 75−80．

　

  • Y. Xia, T. Hayase, S. Hayashi, T. Hamaya：Validity of One-Dimensional Models of Collapsible Tube Flow Based on Three-Dimensional Calculation of Tube Deformation，Trans. Japan　Soc. Mech.　Eng., in Japanese（B），Vol. 65, No. 630 (1999)，pp. 497−504．

　

  • R. Yamaguchi, Y. Takase, S. Kudo, T. Hayase：Periodical Oscillation in Side Branch of Right Angle Branch in Laminar Steady Flow, Trans. Japan　Soc. Mech.　Eng., in Japanese（Ｂ）, 65, No. ，630 (1999), pp. 559-565.

　

  • N. Sato, S. Hayashi, T. Hayase, I. Iimura：Vehicle Vibration Control using Hydraulic Semi-Active Damper (Study Based on Quarter-Car Model)，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese，Vol. 30, No. 1 (1999)，pp. 10−19．

　

  • M. Sendo, N. Ajiro, K. Ishiyama, M. Inoue, K. Arai, T. Hayase：Two-Dimensional Analysis of the Properties of Magnetic Micro-Machines by the Finite Volume Method, 23, No. ，4 (1999), pp. 1665-1668.

　

  • S. Hayashi, T. Hayase and H. Kawamura：Numerical Analysis for Stability and Self-Excited Oscillation in Collapsible Tube Flow，Transactions of the ASME, Journal of Biomechanical engineering, Vol. 120 No. 4 (1998), pp. 468−475.

　

  • T. Hayase, K. Ishizawa, S. Hayashi, I. Iimura：Hydraulic Servo System with Variable Compliance，Trans. Japan　Soc. Mech.　Eng., in Japanese（C），Vol. 64, No. 621 (1998)，pp. 1588−1595．

　

  • N. Sato, S. Hayashi, T. Hayase, A. Tanaka, I. Iimura：Study of Hydraulic Semi-Active Damper (2nd Report, Stability of the Damper)，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese，Vol. 29, No. 3 (1998)，pp. 66−73．

　

  • S. Hayashi, T. Hayase, Y. Miura, I. Iimura：Dynamic Characteristics of Flow in Collapsible Tube，Trans. Japan　Soc. Mech.　Eng., in Japanese（B），Vol. 64, No. 620 (1998), pp. 1055−1062．

　

  • T. Hayase, Y. Xia, S. Hayashi：Numerical Analysis of Transient Flow through a Spool Valve (Modeling of Transient Characteristic in High Reynolds Number Flow)，Trans. Japan　Soc. Mech.　Eng., in Japanese（B）, Vol. 64, No. 619 (1998)，pp. 724−731．

　

  • T. Hayase, S. Hayashi, K. Kojima：Nonlinear Control of Micro Stick-Slip Vibration in Hydraulic Servo Systems，Trans. Japan　Soc. Mech.　Eng., in Japanese（C）, Vol. 64, No. 619 (1998), pp. 772−779．

　

  • T. Hayase and S. Hayashi：State Estimator of Flow as an Integrated Computational Method with the Feedback of Online Experimental Measurement，Transactions of the ASME, Journal of Fluids Engineering, Vol. 119 No. 4 (1997), pp. 814 - 822.

　

  • T. Takagi, J. Yani, H. Tanaka, S. Hayashi, T. Fujimoto, Ute Gebhard ：Simulation and Experiment on the Dynamic Characteristics of a Fluidic Oscillator with Feedback Chanels，Trans. Japan　Soc. Mech.　Eng., in Japanese（C）, Vol. 63, No. 615（1997）, pp. 3790−3795.

　

  • S. Hayashi, T. Hayase and T. Kurahashi：Chaos in a Hydraulic Control Valve, Journal of Fluids and Structures, Vol. 11 No.l (1997), pp. 693-716.

　

  • S. Hayashi, Y. Iizuka, T. Hayase, I. Iimura：Numerical Analysis of the Dynamic Characteristics of a Balanced Piston Type Relief Valve (1st Report, Numerical Simulation and Experimental Results)，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese, Vol. 28, No. 2 (1997), pp. 232 - 238.

　

  • S. Hayashi, Y. Iizuka, I. Iimura, T. Hayase：Numerical Analysis of the Dynamic Characteristics of a Balanced Piston Type Relief Valve (2nd Report, Stability of a Relief Valve)，
Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese, Vol. 28, No. 2, (1997), pp. 239 - 244.

　

  • T. Hayase, S. Hayashi, K. Kojima：Micro Stick-Slip Vibration in Hydraulic Servo Systems，Trans. Japan　Soc. Mech.　Eng., in Japanese（C）, Vol. 63 , No. 606 (1997), pp. 444 - 450.

　

  • N. Sato, S. Hayashi, A. Tanaka, I. Iimura：Study of Hydraulic Semi-Active Damper (1st Report, Derivation of Mathematical Model and Numerical Simulation)，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese，Vol. 28 (1997), pp. 458 - 465.

　

  • T. Hayase, S. Hayashi：Fundamental Study on Computer Aided Flow Field Control (State Observer for Flow System)，Trans. Japan　Soc. Mech.　Eng., in Japanese（Ｂ）, Vol. 62, No. 598 (1996), pp. 2261 - 2268．

　

  • S. Hayashi, T. Hayase, H. Kawamura：Numerical Analysis on Stability and Self-Excited Vibration in Collapsible Tube，Trans. Japan　Soc. Mech.　Eng., in Japanese（B)，Vol. 62, No. 594 (1996), pp. 556 - 563.

　

  • I. Iimura, S. Hayashi, K. Aizawa：Effect of Solid Friction on Global Stability on a Hydraulic Servo System，Trans. Japan　Soc. Hydraulics and Pneumatics Soc., in Japanese，Vol. 27, No. 2 (1996), pp. 299 - 306．

　

  • T. Hayase：Comparison Between Discretization Schemes in Direct Numerical Simulation of Turbulent Flow Through a Square Pipe, Trans. Japan　Soc. Mech.　Eng., in Japanese（Ｂ）, 61, No. 591 (1995), pp. 3967-3974.

　

  • S. Hayashi, T. Kurahashi, T. Hayase：Chaotic Vibration in Poppet Valve Circuit，Trans. Japan　Soc. Mech.　Eng., in Japanese (C)，Vol. 61, No. 585 (1995)，pp. 1810 - 1815.

　

  • T. Hayase, P. Cheng and S. Hayashi：
Numerical Analysis of Transient Flow through a Pipe Orifice (Time Constant for Settling Flow)，JSME International Journal, Vol. 38 No. 2 B (1995), pp.157-163.

　

  • T. Hayase, P. Cheng, S. Hayashi：Numerical Analysis of Transient Flow through Spool Valve，Trans. Japan　Soc. Mech.　Eng., in Japanese (B)，Vol. 61, No. 584 (1995)，pp. 1382 - 1388.

　

  • T. Hayase, P. Cheng and S. Hayashi：Numerical Analysis of Transient Flow through a Spool Valve, Rep. Inst. Fluid Sci., Tohoku Univ., Vol. 7 (1995), pp. 123-133.

　

　

3.2 Proceedings in International Conference (1999-1995)

　

  1. M. Sendo, N. Ajiro, M. Ishiyama, M. Inoue, K. Arai, T. Hayase and J. Akedo：Effect of Machine Shape on Swimming Properties of the Spiral-Type Magnetic Micro-Machine, IEEE International Magnetics Conference, (1999), p. GF-10.

  2. 　

  3. S. Hayashi, T. Hayase and M. Maruyama：Numerical Analysis for Flow in Partly Pressurized Collapsible Tube, Advances in Bioengineering, International Mechanical Engineering Congress & Exposition, ASME, BED-Vol. 39 (1998), pp. 55-56.

  4. 　

  5. Y. Xia, T. Hayase and S. Hayashi：Verification of One-Dimensional Collapsible Tube Models Based on Three-Dimensional Calculation of Tube Deformation, Proceedings of the 5th Japan-USA-Singapore-China Conference on Biomechanics, (1998), pp. 82-83.

  6. 　

  7. H. Nirasawa, T. Hayase and S. Hayashi：Numerical Analysis of Stochastic Red Blood Cell Motion in Capillaries, Proceedings of the 5th Japan-USA-Singapore-China Conference on Biomechanics, (1998), pp. 40-41.

  8. 　

  9. T. Hayase and S. Hayashi：Feedback Control of Turbulent Flow Field Using State Observer, Proceedings of 2nd Japan-France Seminar on Intelligent Materials and Structures, (1998), pp. 24-27.

  10. 　

  11. T. Hayase, S. Hayashi,Y. Xia and T. Koizumi：Numerical Simulation of Korotkoff Sounds, Advances in Bioengineering, International Mechanical Engineering Congress & Exposition, ASME, BED-Vol. 36 (1997), pp. 93-94.

  12. 　

  13. S. Hayashi,T. Hayase and Y. Miura：Analysis of Instability and Self-Excited Vibration for Collapsible Tube by Distributed Parameter Model, Advances in Bioengineering, International Mechanical Engineering Congress & Exposition, ASME, BED-Vol. 36 (1997), pp. 105-106.

  14. 　

  15. S. Hayashi ：Stability and Nonlinear Behavior of Poppet Valve Circuit，Proceedings of the Fifth International Symposium on Fluid Measurement, Control and Visualization, FLUCOME'97, Vol. 1 (1997), pp. 13−20.

  16. 　

  17. Iimura, S. Hayashi, S. Miyakawa, Y. Mochizuki：Study of a Water Hydraulic Regulating Valve，Proceedings of The Fifth International Symposium on Fluid Measurement, Control　and Visualization, FLUCOME'97, Vol. 1 (1997), pp. 307-312.

  18. 　

  19. T. Hayase, Y. Xia and S. Hayashi：Numerical Analysis of Transient Flow through a Spool Valve (Modeling of Transient Characteristic in High Reynolds Number Flow)，Proceedings of The Fifth International Symposium on Fluid Measurement, Control　and Visualization, FLUCOME'97, Vol. 1 (1997), pp. 379-384.

  20. 　

  21. T. Takagi, J. Tani, H. Tanaka, S. Hayashi, T. Fujimoto and U. Gebhard：Simyulation and Experiment on the Dynamic Behabior of a Fluidic Device for Micro Actuator Applications，Proceedings of The Fifth International Symposium on Fluid Measurement, Control and Visualization, FLUCOME'97, Vol. 2 (1997), pp.545-550.

  22. 　

  23. H. Shimizu and S. Hayashi：A Pressure-Regulating Mechanism Using Laminar Proportional Amplifier，Proceedings of The Fifth International Symposium on Fluid Measurement, Control and Visualization, FLUCOME'97, Vol. 2 (1997), pp.575-579.

  24. 　

  25. N. Sato, S. Hayashi, T. Hayase and A. Tanaka：Study on Stability of Semi-Active Damper，Proceedings of The Fifth International Symposium on Fluid Control, Measurement and Visualization，FLUCOME'97, Vol. 2 (1997), pp. 651-656.

  26. 　

  27. Shirai, S. Hayashi, T. Hayase and S. Kawano：Deformation of Red Blood Cells in Fine Capillaries, Proceedings of the International Conference on New Frontiers in Biomechanical Engineering, Tokyo, (1997), pp. 399-402.

  28. 　

  29. H. Shimizu and S. Hayashi：Characteristics of Pneumatic Proximity Sensor Using a Swirling Jet (Driven by Low Supply Pressure)，Proceedings of 3rd JHPS International Symposium on Fluid Power, (1996), pp. 265-269.

  30. 　

  31. S. Hayashi, N. Sato and A. Tanaka：Study of Hydraulic Semi-Active Suspension (Derivation of Mathematical Model and Numerical Simulation)，Proceedings of 3rd JHPS International Symposium on Fluid Power, (1996), pp. 379-384.

  32. 　

  33. Iimura，S. Hayashi and K. Akashi：Pressure Control of a Pump Using a Vortex Amplifier Proceedings of 3rd JHPS International Symposium on Fluid Power, (1996), pp. 507-512.

  34. 　

  35. S. Hayashi, Y. Iizuka and T. Hayase：Numerical Analisys for Stability of Balanced Piston Type Relief Valve，Proceedings of 3rd JHPS International Symposium on Fluid Power, (1996), pp. 531-536.

  36. 　

  37. T. Hayase, S. Hayashi and K. Kojima：Micro Stick-Slip Vibration in Hydraulic Servo Systems，Proceedings of 3rd JHPS International Symposium on Fluid Power, Yokohama, (1996), pp. 555-560.

  38. 　

  39. S. Hayashi, T. Hayase and H. Hashimoto：Chaotic Vibration in Direct Acting Poppet Valve, 19th International Congress of Theoretical and Applied Mechanics, Abstracts, (1996), pp. 113.

  40. 　

  41. S. Hayashi, T. Hayase and A. Koretsune：Numerical Analysis of Response for Pulsatile Flow in Collapsible Tube under variable External Pressure (Simulation for Korotkoff Sounds), 10th Conference of the European Society of Biomechanics Abstracts, (1996), pp. 22.

  42. 　

  43. S. Hayashi, T. Hayase and A. Koretsune：Self-Excited Vibration Occurring in Pulsation Flow in Collapsible Tube, ASME Winter Annual Meeting, Vol. BED-31 (1995), pp. 207-208.

  44. 　

  45. T. Hayase and S. Hayashi：Fundamental Study on Computer Aided Flow Field Control, Proceedings of International Symposium on Microsystems, Intelligent Materials and Robots, (1995), pp. 386-389.

  46. 　

  47. S. Hayashi, T. Hayase and T. Kurahashi：Chaos in a Hydraulic Control Valve, Fluid-Structure Interaction and Structural Mechanics, PVP-Vol. 310 (1995), pp. 109-115.

　

　

　

4. Collaboration

　

Title: Numerical simulation of flow control system

Institution: MOOG Japan Ltd.

Period:　1998-1999

　

Title: Numerical simulation of flow in right angle branch

Institution:　Shibaura Institute of Technology

Period:　1998-1999

　

Title: Numerical simulation of hydraulic valve dynamics

Institution: Yamaha Motor Co.

Period:　1997-1998

　

Title: Numerical simulation of flow around magnetic micro machine

Institution:　Research Institute of Electrical Communication, Tohoku University

Period:　1997-1999

　

Title: Numerical simulation of water hydraulic valves

Institution: NABCO Ltd.

Period:　1997-1998

　

Title: Analysis of water hydraulic valve dynamics

Institution: Ebara Research Co., Ltd.

Period:　1996-1997

　

Title: Modeling of collapsible tube flow dynamics

Institution:　Massachusetts Institute of Technology

Period:　1996-1999

　

Title:　Integration of numerical analysis and experimental measurement

Institution:　Bucknell University

Period:　1995-1999

　

　

　

5. Activity in Scientific Society

　

The following list includes only responsibilities in international conferences held by scientific societies. The staff also works in many domestic research committees of the societies.

　

Name:　S. Hayashi

International Conference:　Fourth JHPS International Symposium on Fluid Power, Tokyo 1999

Country:　Japan

Period:　1997.5.24　-　1999.11.30

position:　Chairman of Organizing Committee

　

Name:　T. Hayase

International Conference:　Fourth JHPS International Symposium on Fluid Power, Tokyo 1999

Country:　Japan

Period:　1997.5.24　-　1999.11.30

position:　Secretary of Organizing Committee

　

Name:　S. Hayashi

International Conference:　Fifth Triennial International Symposium on Fluid Control, Measurement and Visualization, Hayama 1997

Country:　Japan

Period:　1995.12.1　-　1997.12.31

position:　Vice-chair of Executive Committee

　

Name:　S. Hayashi

International Conference:　Third JHPS International Symposium on Fluid Power, Yokohama 1996

Country:　Japan

Period:　1994.10.1　-　1996.11.6

position:　Member of Organizing Committee