Numerical computation is carried out and it is found that the QUICK scheme provides much accurate result, but the relationship between stability and mesh Pelect number is considered when it is used; In addition, a low Reynolds number heat transfer problem is simulated by artificial compressibility method to investigate the choice of artificial compressibility parameter and a series of parameters.

Based on the saturated liquid data from 1993 ASHRAE HANDBOOK, two substance dependent parameters in PT equation of state, the pseudo-critical compressibility factor ξc and the slope F, were determined for 33 refrigerants by taking (T, P8)i as input quantities and minimizing the average deviation in saturated liquid densities for each substance.

The fictitious compress recuperation method of determining the earth s external gravity field;

A new fit equation with two variables for compressibility factor data of supercritical carbon dioxide was proposed in this article.

The compressibility of gas isn't related to the compressibility factor directly.

With the experimental values of thermal pressure coefficients of liquids to modify the excluded volume in the original van der Waals equation, an augmented van der Waals compressibility factor applicable to high density fluids is obtained.

In this paper compression factor of natural gas was calculated according to two different methods: China national standard method and international standard method.

It was found that the compression factor and the compression quality factor increased with initial chirp and power,but optimum fiber length decreased.

In order to change the behindhand state in measurement of natural gas of Liaohe oil field, we make the technique reformation, using the normal hole-board, intelligent sensor, natural gas compression factor, arithmetic of volume flux and compensatory technology.