| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Outline of Final Research Achievements |
In order to construct a self-consistent turbulence model for supernovae explosion, we incorporate the non-equilibrium turbulence for the stellar convection in the framework of the time-space double averaging procedure. The diving plumes radiatively cooled at the stellar surface cause a strong mass and heat mixing in the stellar convection zone. This turbulent transport cannot be reproduced by the usual gradient-diffusion model with mixing-length theory. With the aid of the non-equilibrium effect along the plume motions, this strongly localised enhanced turbulent mixing was for the first time successfully reproduced by the present turbulence model. In addition, the energy transfer between the coherent fluctuations (plumes) and the incoherent fluctuations (random noises) are scrutinised through the evolution equations of the coherent and incoherent turbulent energies. It was shown that the shear of the plume motion is essential.
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