CAJ | 학술논문

管道在进行传质的过程中，需要计算温度梯度引起的热应力，以及管道温度场分布情况，但在管道外壁温度未知的情况下，仅通过自然对流换热经验关联式无法确定空气对流换热系数。基于传热学的理论，采用 ANSYS 软件进行结构热分析，提出一种精确确定管道外自然对流换热系数的方法。通过案例分析，把计算结果与实验结果相比较，确定了该方法的可行性。
관도재진행전질적과정중，수요계산온도제도인기적열응력，이급관도온도장분포정황，단재관도외벽온도미지적정황하，부통과자연대류환열경험관련식무법학정공기대류환열계수。기우전열학적이론，채용 ANSYS 연건진행결구열분석，제출일충정학학정관도외자연대류환열계수적방법。통과안례분석，파계산결과여실험결과상비교，학정료해방법적가행성。
During mass transfer in pipeline,it is needed to analyze the thermal stress caused by temperature gradient and the temperature field distribution of pipelines. However, if the pipe outer wall temperature is unknown, air convection heat transfer coefficient can not be determined only by natural convection heat transfer empirical correlations. So based on the theory of heat transfer,through ANSYS structural thermal analysis, a method to determine the natural convection heat transfer coefficient was put forward. Through the case analysis, the calculation results were compared with the experimental results to determine the feasibility of the method.