|Budget Amount *help
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2011: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2010: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fundamental studies have been carried out for a new sterilization technique of ballast water treatment using rebound shock waves generated by microbubbles. When a microbubble is interacted with a shock wave, ideal spherical collapse is often confirmed and the bubble behavior is estimated by Herring's bubble motion equation. A 2-dim numerical simulation scheme for solving shock problems in two-phase media has been developed and we could obtain reasonable results. In the other hand, a new diaphragmless shock tube assisted by magnetic force was designed and assembled. Using this device the shock wave generation in water through elastic materials was confirmed. In addition, a hybrid analysis that estimates the effects of a shock wave sterilization method was proposed.