in order to study effects of convection and radiation on unstable temperature field of rocket charge with annular clearance in the interior, the charge temperature field was simulated.
为了研究对流和辐射对内含环形空气间隙的某火箭发射装药的非稳态温度场的影响,对装药温度场进行了数值模拟。
calculations show that the annular clearance leakage by the mode of gradually reducing clearance is much less than that by the mode of equidimension clearance.
文末算例表明,渐缩间隙模型的环隙漏失量比平行平板模型的环隙漏失量小得多。
the annular clearance was also enlarged, thus the thickness and strength of the cement sheath was increased, and the oil well life of the sidetracked slim hole was also prolonged.
扩孔加大了环空间隙,固井后水泥环厚度和强度增大,可以延长侧鉆小井眼油井寿命。