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Newsletter  2019.3  Index

Theme : "The Conference of Fluid Engineering Division"

  1. Preface
  2. Development and launch of sounding rockets and development status of small launch vehicle by Japanese startup company
    Takahiro INAGAWA (Interstellar Technologies Inc.)
  3. Experimental quantification of friction drag reduction effects on an airfoil using uniform blowing
    Kaoruko ETO, Yusuke KONDO, Koji FUKAGATA (Keio University)and Naoko TOKUGAWA (Japan Aerospace Exploration Agency)
  4. Wind-tunnel experiments of friction drag reduction on an airfoil using passive blowing
    Shiho HIROKAWA, Kaoruko ETO, Yusuke KONDO, Koji FUKAGATA (Keio University)and Naoko 
    TOKUGAWA (Japan Aerospace Exploration Agency)
  5. A Study on Airfoil Flow and Aerodynamic Noise with Wake-boundary layer Interaction
    Noriaki KOBAYASHI (The University of Tokyo)
  6. LES Analysis of Stator Cascade Flow in a Transonic Axial Compressor
    Seishiro SAITO (Kyushu University)
  7. Influence of grid resolution in large-eddy simulation of a turbulent pipe flow using the WALE model
    Daiki IWASA, Yusuke NABAE, Koji FUKAGATA (Keio University)
  8. The Dreams of Flow Contest
    Tomomi TERADA (Hokkaido University)  
  9. Separation of floating waste by "Water Surface Control Device"
    Toshiki HOMMA  (Meisei University)


Separation of floating waste by "Water Surface Control Device"

Toshiki HOMMA
Meisei University

1. Introduction

We participated in the 16th flowing dream contest held in Muroran city, Hokkaido on 29th November 2018 with team name "Watasepa." The team name "Watasepa" was named from “Water” and “Separate”.

"Watasepa" is a team composed of five members of Meisei University's Faculty of Science and Engineering, Department of Mechanical Engineering.

2. Reason for choosing this theme

The theme of the 16th “Flow Dream Contest” was "Active Control of Flow" and we thought based on the theme. We focused on the marine pollution by plastics which is often featured in the news because marine pollution is getting worse year by year and sea creatures that die due to marine pollution. Therefore, we thought that we could solve the problem of marine pollution, and that solution was “The Water Surface Control Device " we created.

3. About our production

We attempted to generate a vortex, but it was difficult. Therefore, we thought to generate vortex more easily, installed a control board in the circulating water tank, and separated and collected the floating waste on the surface of water using the vortex behind that control board.

As a result, we can separate and collect two types of waste, large and small.

First, FIG. 1 shows how to collect large floating waste on the water surface. Large floating waste on the water surface are caught in a vortex made by a control board with a large diameter and a high probability.

Second, floating waste on the water surface passing through the control board of FIG. 1 is collected by the control plate shown in FIG. 2.

FIG1. Controll Board1

FIG2. Controll Board2

4. Conclusion

We have created “The Water Surface Control Device ". “The Water Surface Control Device " can separate and collect two types of waste, large and small.

We expect the marine pollution to be solved by “The Water Surface Control Device ".

And we are grateful to the contest executives committee, the Meisei University’s professors and the people who supported us.

Last Update:3.20.2019