If increasing drawing interval , the movement and flow range of top coal will enlarge , and the velocity gradient on flow cross - section will diminish , so that it is good for controlling the flow rate of thin sand among loose top coal 研究表明,加大放煤步距,頂煤運(yùn)移流動(dòng)的范圍變大,流動(dòng)斷面內(nèi)速度梯度變小,有利于控制細(xì)砂的下竄速度。
In the rotor design , it makes a detailed calculation for all the geometry feature parameters including geometry dimensions , contact line length , blowhole area and flow cross - section area and the thermodynamic feature parameters such as cooling capacity , shaft power and so on 在轉(zhuǎn)子設(shè)計(jì)方面,對(duì)全部幾何特性參數(shù),包括幾何尺寸、接觸線長(zhǎng)度、泄漏三角形面積和面積利用系數(shù)等以及包括制冷量、軸功率等冷水機(jī)組熱力特性參數(shù)進(jìn)行了詳細(xì)計(jì)算。