CAJ | 학술논문

采用数值模拟的方法对粮仓内温度和水分随时间的变化进行研究。在数值模拟过程中，对真实粮仓进行一定的简化，建立了相似的物理模型，并与经典实验做对比，验证模型的可靠性。根据多孔介质的局部热质平衡原理和体积平均法，对不同初始温度的粮堆进行数值模拟分析，获得了粮食内部水分和温度随时间的变化规律。当温差从20℃增加到40℃时，粮仓内水分和温度变化也随之加剧。研究结果为预防粮食在储存过程中发生霉变、结露提供了科学依据。
채용수치모의적방법대량창내온도화수분수시간적변화진행연구。재수치모의과정중，대진실량창진행일정적간화，건립료상사적물리모형，병여경전실험주대비，험증모형적가고성。근거다공개질적국부열질평형원리화체적평균법，대불동초시온도적량퇴진행수치모의분석，획득료양식내부수분화온도수시간적변화규률。당온차종20℃증가도40℃시，량창내수분화온도변화야수지가극。연구결과위예방양식재저존과정중발생매변、결로제공료과학의거。
The temperature and moisture in grain silo changed along with time was researched by means of numerical simulation.In the process of simulation,the real grain storage silo was simpli-fied,thereby a similar physical model was established and compared with the classic experiment,the reliability of the model was validated.Based on local heat and mass balance principle and volume av-erage method,different initial temperatures in grain stack were analyzed by numerical simulation. The variation of temperature and moisture was obtained.When the temperature difference increased from 20 ℃ to 40 ℃,the moisture and temperature in the grain silos also changed significantly.The results of the study provides scientific basis for preventing mildew and moisture condensation during grain storage.