喷管延伸段内向辐射角系数的数值分析

本文导出了计算液体火箭喷管内壁面辐射角系数的通用关系式。利用Simpson公式求得了8个喷管延伸段内壁面对内壁面,12个喷管延伸段内壁面对入口面积和内壁面对出口面积的辐射角系数。计算段出口面积比ε_(?)=50,75,100及144。还提出了一个有较高精度的内壁面对出口面积辐射角系数半对数实用计算公式。

A NUMERICAL ANALYSIS OF THE RADIATION VIEW FACTOR INSIDE EXTENDED SECTION OF NOZZLE

In this paper, the general relationship has been given by which can be calculate the radiation view factor on the inside of liquid rocket nozzle. Using Simpson's formula, the radiation view factors, from inside wall to inside wall for eight extended sections of nozzle, and from inside wall to inlet and exit area for twelve extended sections of nozzle, are calculated, respectively. The exit area ratios of these calculating sections are equal to 50, 75, 100 and 144. A semilogarithmic practical formula of the radiation view factor from inside wall to exit area is given also with very high precision.