王者体育

  •    |    
  •    |   
  •    |  
  • English
科学研究
报告题目:

wave phenomena to three-dimensional fluid-particle model

报告人:

lihailiang jiaoshou(shoudoushifandaxue)

报告时间:

报告地点:

tengxunhuiyi id: 335 133 550 http://meeting.tencent.com/s/swnlks2y47nn

报告摘要:

we investigate the wave phenomena to a fluid-particle model described by the multi-dimensional compressible euler/navier-stokes coupled with the vlasov-fokker-planck equation (euler-vfp or ns-vfp) through the relaxation drag force on the fluid momentum equation and the vlasov force on the particle transport. we prove the globally nonlinear time-asymptotical stability of the planar rarefaction wave to 3d euler-vfp system, which as we know is the first result about the nonlinear stability of basic hyperbolic waves for the multi-dimensional compressible euler equations with low order dissipative effects (i.e., relaxation friction damping). this new (hyperbolic) wave phenomena comes essentially from the fluid-particle interactions through the relaxation friction damping, which is different from the interesting diffusive phenomena for either the compressible euler equations with damping or the pure fokker-planck equation. similar phenomena is also shown for 3d compressible ns-vfp, and it is further proved that as the shear and bulk viscosities tend to zero, the global solution to 3d compressible ns-vfp system around the planar rarefaction wave converges to that of 3d euler-vfp system at the uniform rate with respect to the viscosity coefficients. this is joint work with teng wang (bjut) and yi wang (amss) .

王者体育_王者体育直播平台 电竞投注-电竞赛事投注平台 电竞投注-电竞赛事投注平台 电竞投注-电竞赛事投注平台 电竞投注-电竞赛事投注平台 电竞投注-电竞赛事投注平台 电竞投注-电竞赛事投注平台