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Newsletter  2016.2  Index

Theme : "The Conference of Fluid Engineering Division"

  1. Preface
  2. Fluids Engineering supporting Artificial Heart
    Takashi YAMANE (Kobe University)
  3. Foam measurement via a single-tip optical fiber probe with surface treatment
    Ayumi NIHEI, Takayuki SAITO (Shizuoka University)
  4. Visualization of a process of ultrasonic particle flocculation depending on dissolved gas components in water
    Sayuri YANAI, Hiroya MURAMATSU, Yuki MIZUSHIMA, Takayuki SAITO (Shizuoka University)
  5. Research for Cerebral Aneurysm Recanalization After Coil Embolization Using CFD
    Soichiro FUJIMURA (Tokyo University of Science)
  6. A Water Bed, Yasutaka
    Naoya UENE (National Institute of Technology, Yonago College)
  7. Music Awa ~Music hour~
    Shuhei HATTORI, Ikuma EMORI (National Institute of Advanced Industrial Science and Technology )


“A Water Bed, Yasutaka”

Naoya UENE
National Institute of Technology, Yonago College



The number of people having a pet has increased rapidly. In addition, many pets have come to be able to live longer thanks to improvement of medical technology and development of healthy foods for them. On the other hand, however, the number of pets that cannot walk well and cannot move their own bodies because of aging has increased recently. In fact, some of them are suffering from rubbing cloth or bedsore. Therefore we decided to resolve these troubles and make a special water bed where pets can heal.

Figure 1 shows of a photo and 3D model of “A Water Bed, Yasutaka”. The mechanism is as follows:
               A hole is made on a black box for a base.
               A speaker is fitted under the bed.
               The sound from the speaker vibrates the water bed.

There are two advantages in this bed. One is that use of this bed can reduce the burden to body which previous water beds have given before. Another is that the bed can provide massage effect by using water pressure and the vibration.

It uses the mechanism that water behavior changes depending on frequency. Figure 2 shows the water behavior by frequency. Massage effect can be obtained by using various patterns of vibrations on this mechanism.

Key words

Water Bed, Water Pressure, Vibration, Pets Goods


(a) Photo  (b) 3D model

Fig. 1 “A Water Bed, Yasutaka”

Fig. 2 Water behavior by frequency (movie file)

Last Update:2.16.2016