What's new
Newsletter Nagare2024.11.1 Update
― Theme : "Mechanical Engineering Congress, 2024 Japan (MECJ-24)" ―
- Preface
Hideo MORI, Tetsuya KANAGAWA - Modeling of the Reynolds stress transport equation – use of generative AI
Shinnosuke OBI (Keio University) - Principled thinking: Numerical simulation of fluid flow and turbulence analysis
Yohei MORINISHI (Nagoya Institute of Technology) - Performance Evaluation of Thrust Increasing Guide for Drone
Atsushi KASE (University of Toyama) - Flow measurements on wind turbine research
Yasunari KAMADA (Mie University) - PIV Measurement of Mini Centrifugal Pump
Toru SHIGEMITSU (Tokushima University)
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 |
Measuring velocity of flow 1 (Ping-pong ball anemometer) |
 |
Let us measure the wind speed using a Ping–pong ball |
Flow velocity measurement |
Measuring velocity of flow 2 (Measuring flow velocity of water) |
 |
Let us measure the flow velocity of water using a straw |
Flow velocity measurement |
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 |
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 |
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 |
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 |
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 |
Bamboo-copter |  |
Let us fly the handmade bamboo-copter |
Rotary wing |
Wind-powered vehicle |  |
A model car that runs by turning a propeller with rubber power |
Rotary wing |
Wind-powered ship |  |
A model ship that runs by turning a propeller with rubber power |
Rotary wing |
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 |
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 |
Flying Octopus kite balloon |  |
Let us float an 8-legged octopus kite balloon with a dryer |
Coanda effect |
Float a balloon with a stick |  |
Let us attach a stick to a balloon and float it with a dryer |
Coanda effect |
Flying Slither |  |
Let us float a slither with a dryer |
| Bernoulli's principle |
The hot topic on study, technological development and R&D in fluids engineering fields2024.9.5 Update
| Performance prediction model of contra-rotating axial flow pump with separate rotational speed of front and rear rotors and its application for energy saving operation De ZHANG（Torishima Pump Mfg. Co., Ltd.）， |
 |
| Mechanism of aerodynamic force generation concerning train vibration in tunnel (LES of large-scale flow structure around simplified train model) Koji NAKADE（Railway Technical Research Institute）， Yutaka SAKUMA（Railway Technical Research Institute, currently Tokushima Bunri University）， Takeo KAJISHIMA（Osaka University, currently Shikoku Polytechnic College） |
 |
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, |
 |