论文部分内容阅读
据“建立模型→数值计算结果→计算结果优化”原理，在水平管道输送煤粉的研究过程中，得到实际气体速度和最终固气速度比的显式函数关系式ｕａ＝２８２．５２×Ｑ０．９９２ｄ０．０１８ｓρ０．９２６ｇｍ０．９１２Ｄ２，ｍ＝０．４６６ｄｓ－０．２２４将临界最终固气速度比与临界输送速度联系起来：ｍ２＊／ｍ１＊＝ｕｃｓ１／ｕｃｓ２，进而得到水平管道中输送煤粉的气体临界输送速度和输送煤粉的最大粉气比的关系式ｕｃｓ＝８．１００ｄｓ０．２２４，ｍｍａｘ＜４９．１８５×Ｑ１．０８８ρ１．０１６ｇＤ２．１９３ｄ０．２２６
According to the principle of “establishing model → numerical calculation → optimization of calculation results”, an explicit function of the actual gas velocity and the final solid gas velocity ratio ua = 282.52 × Q0 is obtained during the research of conveying coal powder in horizontal pipelines. 992d0.018sρ0.926gm0.912D2, m = 0.466ds-0.224 The critical final solid gas velocity ratio and the critical transport velocity are linked: m2 * / m1 * = ucs1 / ucs2, and then get the horizontal pipeline transportation The relationship between the critical conveying velocity of pulverized coal and the maximum pulverized coal conveying ratio ucs = 8.100ds0.224, mmax <49.185 × Q1.088ρ1.016gD2.193d0.226