首先假定输送比，初定气流速度，由农业技术要求确定排种量，从而确定风量，计算得到管道的直径。
First we presume feeding rate, ascertaining the velocity of air current, ascertaining the feeding quantity by farm technical demand and ascertaining wind quantity, calculating the diameter of pipe.
首先应用自由尾流分析技术来计算旋翼尾迹和发动机绕排流空间的洗流速度。
First, free wake analysis was carried out to calculate the rotor wake geometry and the downwash around the engine jet space.
当井筒内气流速度低于维持气井连续排液的临界气流速度时，气井出现携液现象。
When gas flow velocity in a wellbore is less than a critical gas flow velocity maintaining continuous flowing back in a gas well, a liquid carrying phenomenon occurs in the gas well.
排风口位置的变化，对下层气流速度场、温度场以及烟气浓度场不产生影响，对热力分层高度、工作区垂直温度分布等热舒适性问题没有影响。
Air outlet position didn't influence the air flow field temperature field, concentration field, heat lamination height and vertical distribution of temperature of work area.
分析了固定层煤气炉存在的问题，提出了吹风入炉箅气室气流速度控制，吹风气出炭层气流速度控制，煤气炉排渣角与炉渣安息角的关系等论点，并提出了具体的煤气炉改造方法。
The velocity control of blow air into space between grates and out of coal layer, relations between the angle of slag dischcarge and rest angle are presented.
分析了固定层煤气炉存在的问题，提出了吹风入炉箅气室气流速度控制，吹风气出炭层气流速度控制，煤气炉排渣角与炉渣安息角的关系等论点，并提出了具体的煤气炉改造方法。
The velocity control of blow air into space between grates and out of coal layer, relations between the angle of slag dischcarge and rest angle are presented.
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