一类可压缩非牛顿流解的爆破准则

Blow-up Criterion for a Class of Compressible Non-Newtonian Fluids with Vacuum

利用反证法研究一类真空可压缩非牛顿流体,给出了其强解的爆破准则.即当时间t趋于临界时间T*时,若速度的导数是有界的,则该局部强解关于时间可以延拓成整体解.特别地,允许初始密度含有真空的情形.

We obtained a blow-up criterion for strong solutions to a class of compressible non-Newtonian fluids j ust in terms of the derivative of the velocity using the proof of contradiction.In other words,if the derivative of the velocity remains bounded as time t approaches to the critical time, a local strong solution can be continued globally in time.In addition,the initial vacuum states are allowed in our cases.