多管地道降温的模拟研究
Simulation study on cooling potential of multi-tube earth-air tunnels
摘要：
以三维非稳态固体导热模型和一维流体传热模型为基础，采用有限差分法，建立了考虑管间传热影响的多管地道降温传热模型，并通过与实测数据的比较，验证了其正确性。采用修正温度简化了多管地道降温算法。分析了管数、埋管深度和管间距对地道降温效果的影响。
关键词：多管地道,地道降温,修正温度
Abstract：
Based on a 3-D unsteady heat conducting mode and a 1-D liquid heat transfer mode, establishes heat transfer mode of multi-tube earth-air tunnel by using finite difference method. Verifies the correctness of this mode by comparison between simulated data and test data. Develops a simplified method with a modified temperature. Analyses the influences of tube number, depth of buried tube and tube spacing on cooling potential of multi-tube earth-air tunnels.
Keywords: