1)  variable mass flow

1.
Investigation of variable mass flow in horizontal well with perforation completion coupling reservoir;

2.
The effect of variable mass flow is cons.

3.
For a single phase steady system,considering the pressure drop created by friction and the character of the variable mass flow in the wellbore,a variable mass model with pressure gradient is developed by coupling the percolation in reservoir with the flow in the wellbore.

2)  variable mass flow

1.
Pressure drop of variable mass flow in perforation completion of horizontal wellbore;

2.
Study on momentum transfer characterisitics of variable mass flow in collection header of utility boiler;

3.
Study on characteristics of horizontal well inflow performance considering variable mass flow in solution gas drive reservoirs

3)  variable mass flow pattern

4)  changing-quality-turbulence

1.
According to the mutual relation between fluid flow in well bore of horizontal well and reservoir,a new method of the coincidence-computation for changing-quality-turbulence and stratum filtering flow in a horizontal well with pressure gradient was developed.

5)  variable temperature control with varied flow

1.
Applying the correction coefficient of heat load, the formula on supply and return water temperature in variable temperature control with varied flow is corrected.

6)  Metamorphic quality

 变质量体运动variable-mass body，motion of a   运动过程中自身质量发生明显变化的物体的运动。若变质量体的转动速度和加速度同平动的速度和加速度相比可以忽略不计，则此变质量体就可视为一个变质量质点。在工程技术中有许多变质量体的例子：火箭不断喷出燃气使火箭质量发生变化；喷气飞机不断吸入空气使质量增加，又不断喷出燃气使质量减少。    密歇尔斯基方程 变质量质点的运动微分方程，由俄罗斯学者I.V.密歇尔斯基提出而得名。其表达式为 说明：补充资料仅用于学习参考，请勿用于其它任何用途。 参考词条 ©2011 dictall.com