CAJ | 학술논문

首先应用C#软件编制贮箱气体置换计算程序，用该程序对不同N2、H2充气压力和放气终压对贮箱置换的影响进行分析，通过对比分析得出最优置换方案；其次利用FLU—ENT软件对某运载火箭发动机动力系统试验LH2贮箱气体置换过程进行数值计算，包括N2充气置换、H2充气置换和LH2贮箱缩比尺寸和全尺寸数值计算。对H2置换过程中不同的放气终压也进行了数值计算，并将缩比尺寸数值计算结果同现有试验台LH2贮箱置换进行比较；最后数值计算了LH2贮箱H2充气完成后混合均匀需要的时间。
수선응용C#연건편제저상기체치환계산정서，용해정서대불동N2、H2충기압력화방기종압대저상치환적영향진행분석，통과대비분석득출최우치환방안；기차이용FLU—ENT연건대모운재화전발동궤동력계통시험LH2저상기체치환과정진행수치계산，포괄N2충기치환、H2충기치환화LH2저상축비척촌화전척촌수치계산。대H2치환과정중불동적방기종압야진행료수치계산，병장축비척촌수치계산결과동현유시험태LH2저상치환진행비교；최후수치계산료LH2저상H2충기완성후혼합균균수요적시간。
The program of gas replacement in the tank is drawn up with C# NET software. The influence of different filling pressure and final pressure after deflation of nitrogen and hydrogen on gas replacement in the tank is analyzed with the program. An optimum scheme of gas replacement is determined by comprehensive comparison. The numerical calculation of gas replacement process in the liquid hydrogen testing tank of a rocket engine power system is carried out with FLUENT software. The numerical calculation includes the nitrogen filling replacement, hydrogen filling replacement, downsizing scaling and full-size liquid hydrogen tank. The results of numerical calculation are compared with the replacement of existing liquid hydrogen tank on the test-bed. The duration time of the gas mixing uniformity after completion of the hydrogen filling is calculated.