采用非结构化有限容积法，对原油成品油双管同沟敷设新技术进行数值模拟，详细研究了不同管间距下成品油管道对加热输送原油管道的热力影响，尤其是对热油油温的影响。

An unstructured-finite-volume method is used for investigating the new technology of crude oil pipeline and products pipeline laid in one ditch. The new technology is simulated. The thermal impact of the products pipeline on the hot crude oil pipeline, especially on the crude oil temperature is studied with the varying pipeline intervals.