up gradient

Gradient Blow-up Problem for a Nonlinear Parabolic Equation with Nonhomogeneous Boundary Condition

一类具有非齐次边界条件的非线性抛物方程解的梯度爆破问题

Breakoff of the subduction slab resulted in squeezing up the buoyant UHP metamorphosed crust material in the second stage ( 210~ 170 Ma), when the geothermal gradient was enhanced.

第二阶段（210～170Ma）的折返由深俯冲板片的断离引发，浮力开始起作用；

A mathematical model of the unsteady flow pipe section has been built up while CWS is transported in a long pipe. By solving the model, length of the unsteady flow pipe section, pressure gradient at every cross-section and the gross energy losses can be predicted.

建立了高浓度水煤浆长距离管道输运中非稳定段里的数学模型，对模型的求解可以预测非稳定段长度、压力梯度及总的压力损失。

This model can decrease the early damage of aluminum reduction cell and prolong the life of aluminum reduction cell by avoiding thermal gradient in the cathode resulting from the preheating and the start-up of aluminum reduction cell.

此模型从数值上避免了由焙烧启动而带来的阴极内较大温度梯度，能有效地减少铝电解槽早期破损，提高铝电解槽的寿命。

N step restart conjugate gradient routine is used to speed up the convergence rate.

使用n步重新开始的共轭梯度法可以提高算法的收敛速度.

The results show that there is a uniform temperature field and lower temperature gradient on cathode surface. So the gas baking can meet the requirements of start-up process of aluminum electrolysis cell.

仿真结果表明：阴极表面温度分布均匀，温度梯度小，燃气焙烧能够满足铝电解槽预热启动的要求。

On the Blow-Up Results for Nonlinear Wave Equation with a Gradient Term

关于带梯度的波动方程解的blow&up性质