CAJ | 학술논문

为了解微重力条件下空穴对相变传热过程的影响，在焓法的基础上增加了基于温度排序算法的空穴模型，在求解过程分析了温度场和空穴之间的相互作用；建立了相变装置的二维模型；研究了空穴在周期外热流条件下的移动规律。结果表明，从初始时刻到第8个轨道周期，低温区空穴逐渐消失并在高温区出现，空穴沿等温线方向扩散并最终积聚在高温边界附近，空穴的移动使传热路径上的热阻增大，导致相变装置冷热边界的传热温差增加了3℃。
위료해미중력조건하공혈대상변전열과정적영향，재함법적기출상증가료기우온도배서산법적공혈모형，재구해과정분석료온도장화공혈지간적상호작용；건립료상변장치적이유모형；연구료공혈재주기외열류조건하적이동규률。결과표명，종초시시각도제8개궤도주기，저온구공혈축점소실병재고온구출현，공혈연등온선방향확산병최종적취재고온변계부근，공혈적이동사전열로경상적열조증대，도치상변장치랭열변계적전열온차증가료3℃。
To study the influence of the void on phase change heat transfer process under microgravity, the void model using temperature sorting algorithm was built based on the enthalpy method, which can simulate the interaction between the void and the temperature distribution.The 2D model of phase change material container was built to study the void migration rule under the periodical heat flux boundary condition. The results show that from the initial time to the 8th period the void disappears gradually in the low temperature region and appears in the high temperature region. The void moves to the high temperature region and diffuses along the isotherms. The void migration increases heat resistance along the heat transfer route and the temperature difference about 3℃ between cold and hot boundaries.