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Newsletter Nagare2023.11.29 Update

―  Theme : "Mechanical Engineering Congress, 2023 Japan (MECJ-23)"  ―

  1. Preface
    Hideo MORI, Tetsuya KANAGAWA
  2. Why do mistakes communicate and spread? (Diffusion and prevention of misperceptions regarding fluid mechanics)
    Ryozo ISHIWATA (Kanagawa Institute of Technology)
  3. Toward Digital Twin Numerical Turbine
    Satoru YAMAMOTO (Tohoku University)
  4. Measurements of turbulent wall pressure fluctuation field in a turbulent boundary layer and the wing-flat plate juncture flow using the many-channel microphone array
    Yoshitsugu NAKA (Meiji University)
  5. PSP and TSP for measuring pressure and temperature fields on wall surfaces and their applications
    Yasuhiro EGAMI (Aichi Institute of Technology)
  6. Flow measurement using MEMS differential pressure sensor
    Hidetoshi TAKAHASHI (Keio University), Takuto Kishimoto (Keio University), Kei Ohara (Keio University), Kyota Shimada (Keio University)
  7. Flexible Sheet Sensor for Advanced Flow Monitoring
    Masahiro MOTOSUKE (Tokyo University of Science)

―  Theme : "AJK FED 2023"  ―

  1. Preface
    Hyun Jin PARK, Shoichi MATSUDA, Chungpyo HONG
  2. Evaluation of railway vehicles' resistance against strong crosswinds and its application for safe railway operation
    Yayoi MISU (East Japan Railway Company)
  3. Order within Turbulence
    Susumu GOTO (Osaka University), Yutaro MOTOORI (Osaka University)
  4. LES/Lagrangian-particle-simulation of a Reactive Turbulent Planar Jet
    Jiabao Xing(Nagoya University), Tomoaki WATANABE(Nagoya University), and Koji NAGATA(Kyoto University)
  5. Unsteady Characteristics of Tip Leakage Vortex Cavitation in the Occurrence of Cavitation Instability in Liquid Rocket Inducer
    Koki TAMURA (Tohoku University),Yuto NAKURA (Tohoku University), Satoshi KAWASAKI (Japan Aerospace Exploration Agency), Yuka IGA (Tohoku University)
  6. Water Condensation in PEMFCs at Nano-scale: Insights through Lattice DFT simulations
    Clint John Cortes OTIC (The University of Tokyo), Masazumi ARAO (FC-Cubic), Masashi MATSUMOTO (FC-Cubic), Hideto IMAI (FC-Cubic), Ikuya KINEFUCHI (The University of Tokyo)
  7. Reconstruction of Fluid Stress Field from Flow Birefringence using Physics-Informed Convolutional Encoder-Decoder (PICED)
    Daichi IGARASHI (Tokyo University of Agriculture and Technology), Shun MIYATAKE (Tokyo University of Agriculture and Technology), Jingzu YEE (Tokyo University of Agriculture and Technology), Yoshiyuki TAGAWA (Tokyo University of Agriculture and Technology)
  8. Determination of Permeability in the Volume Penalisation Method with a Smooth Mask Function
    Taichi TSUJIMOTO (Osaka University), Yuta NAKAO (Osaka University), Takuya TSUJI (Osaka University), Toshitsugu TANAKA (Osaka University), Kimiaki WASHINO (Osaka University)

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Enjoy Fluid Experiments Lab.2023.3.3 Update

Viscosity

Air resistance
Dropping a horizontal disk into a cylinder Drop a light disk into a cylinder. Let us observe how it falls slowly.

Viscosity

Air resistance
Dropping a slanting disk into a cylinder What happens when you drop a slanting disk into a cylinder?

Viscosity

Air resistance
Dropping a circular paper into a cylinder Let us drop a paper cut into a circle into a PET bottle cylinder.

Flow velocity measurement
Drag

Air resistance
Measuring velocity of flow 1
(Ping-pong ball anemometer)
Let us measure the wind speed using a Ping–pong ball

Flow velocity measurement
Pitot tube

Measuring velocity of flow 2
(Measuring flow velocity of water)
Let us measure the flow velocity of water using a straw

Flow velocity measurement

Pitot tube
Measuring velocity of flow 3
(Pitot tube)
Let us measure the wind speed using a straw

Flow velocity measurement

Pitot tube
Measuring velocity of flow 4
(Inclined Pitot tube)
Let us tilt the pitot tube and measure the slow flow.

Air resistance

Drag
Function of wind and rubber
(3rd grade Elementary School Science)
Wind and rubber can move things. Let us examine the force caused by the wind.

Air resistance

Drag
Force received from wind 1
(Effect of size)
How does the force received from the wind change depending on the size of an object?

Air resistance

Drag
Force received from wind 2
(Effect of shape)
How does the force received from the wind change depending on the shape of an object?

Air resistance

Drag
Streamlined shape with low air resistance A shape with a rounded front and a pointed back has a low air resistance and is called a streamlined shape.

Rotary wing

Momentum theory
Bamboo-copter Let us fly the handmade  bamboo-copter

Rotary wing

Momentum theory
Wind-powered vehicle A model car that runs by turning a propeller with rubber power

Rotary wing

Momentum theory
Wind-powered ship A model ship that runs by turning a propeller with rubber power

Rotary wing

Momentum theory
Model aircraft A model airplane that flies by turning a propeller with rubber power
Buoyancy Taking out the object that lies at the bottom 1 Take out the object at the bottom of a PET bottle
Depth and Pressure Taking out the object that lies at the bottom 2 Take out the object at the bottom of a PET bottle
Depth and Pressure Surgical Operation? Take out object inside the PET bottle from a PET bottle side cut
Depth and Pressure Taking out stone from PET bottle Take out the big stone inside a PET bottle

Coanda effect

Momentum theory
A Balloon that Floats at an Angle (Sequel) Let us attach the tail of a newspaper to a balloon and float it with a dryer

Coanda effect

Momentum theory
Flying Octopus kite balloon Let us float an 8-legged octopus kite balloon with a dryer

Coanda effect

Momentum theory
Float a balloon with a stick Let us attach a stick to a balloon and float it with a dryer

Coanda effect

Momentum theory
Flying Slither Let us float a slither with a dryer
  Bernoulli's principle    

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The hot topic on study, technological development and R&D in fluids engineering fields2023.9.29 Update

Mean velocity profile in high Re-number turbulent boundary layer: Its universality and recent progress

Yoshiyuki TSUJI(Nagoya University),
Atsushi IDO(Railway technical research institute),
Michio Nishioka(Osaka Prefecture University)
Bayesian optimization of traveling wave-like wall deformation for friction drag reduction in turbulent channel flow

Yusuke NABAE (Tokyo University of Science),
Koji FUKAGATA (Keio University)

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Let's explore lab! (Introduction of laboratories)2022.10.17 Update

The New Carbon-neutral Fuel Engineering Laboratory! (Yamaguchi University)

 

Ryoya Shiraishi, Associate professor

Carbon-neutral Fuel Engineering Laboratory,
Department of Mechanical Engineering, Yamaguchi University
2 cho-me 16-1 , Tokiwadai, Ube, 755-8611, Japan

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