During calculation, the concepts of a new upper boundary condition (UBC) of oil flow and the averageviscosity across the oil film thickness were used.
在计算过程中，采用了不完整的上游边界及沿膜厚方向的平均粘度概念。
2
The changes of viscosity, hydrocarbon composition and average relative molecular mass of Shengli heavy oil in catalytic upgrading by oil-soluble catalyst XAGD-2 were investigated.
The viscosityaverage molecular weighs of several different CPPs were determined by dilute solution viscometry and the intrinsic viscosity was related to the viscosity of industry concentration.