Based on the theory of mechanical energy conservation,a compressible non-Newton fluid flowing ordinary differential equation on pressure is found by deducing and simplifying the academic formulas with considering the pressure gradient of acceleration,consummating the state equation of foam by using Berthelot second virial coefficient,and logical assumptions.

Error correction for cylinder probes measuring the flow with velocity gradient;

The results show that,a linear relationship exists between the gas fluctuation velocities and velocity gradients in the sudden expansion region where the shear is intense.

Based on the research on elevator speed control and curve at present,the paper designs and finishes the system of optimizing control elevator speed,and does relevant experiments.

ased on the brief analysis of the traditional way of elevator speed control,this paper discusses the basic principle and specific process of a new way,which is surplus distance oriented,whose time-speed curve is sine curve and experiment to validate the way.

Data show that velocity gradients become larger when velocity is bigger.

In order to increase the speed and precision of image segmentation,proposed a novel gradient advanced segmentation model based on Chan-Vese level set method.