本文已被：浏览 982次 下载 595次
投稿时间：2015-03-23
投稿时间：2015-03-23
中文摘要: 利用国内外较为流行的Ansys Fluent软件，结合现有供热管道试验的模型修正，实现了长距离超高压蒸汽管道瞬态变化过程的计算流体动力学（CFD）数值模拟.计算结果表明：根据模型修正后所作的优化计算，φ508外径的钢管可满足事故处理与时间要求.事故处理时，进口流量在原有流量基础上连续上升70~80 s超过事故所需流量的10%，稳定一段时间再下降并维持所需的事故流量，可将出口流量达到时间可靠地控制在180 s内，并且管道进口处的供汽汽压低于12 MPa，完全可以满足热用户的事故处理要求.
Abstract:By means of the Ansys Pluent Software which is relatively well accepted both at home and abroad,in combination of the existing heating pipelines revised model,the CFD numerical computation of transient characteristics of ultra-high-pressure long distance steam pipelines is realized.Our optimization computation with the corrected model indicates that φ508 steel pipe can meet the flow rate and time expectations of accident handling.In the case of an accident where inlet flow needs to increase continuously for 70 to 80 seconds,peaks at 10% more than the desired flow rate for accident handling for a while,then decreases to and maintains at the needed flow rate.This pipe can reliably provide the desired outlet flow within 180 seconds,while keeping the steam pressure at inlet under 12 Mpa.The performance of this pipe is sufficient for heat users' requirements to handle such accidents.
keywords: computational fluid dynamics long-distance heating pipeline transient property non-steady-state numerical calculation response time to parameter changes
文章编号：201600504 中图分类号： 文献标志码：
基金项目:
引用文本：
曹绛敏,张姣阳,韩筱.长距离超高压供热管道瞬态特性CFD分析应用[J].上海电力大学学报,2016,32(5):428-432.
CAO Jiangmin,ZHANG Jiaoyang,HAN Xiao.CFD Analysis and Application of Transient Properties on Long-distance Ultra-high-pressure Heating Pipelines[J].Journal of Shanghai University of Electric Power,2016,32(5):428-432.
曹绛敏,张姣阳,韩筱.长距离超高压供热管道瞬态特性CFD分析应用[J].上海电力大学学报,2016,32(5):428-432.
CAO Jiangmin,ZHANG Jiaoyang,HAN Xiao.CFD Analysis and Application of Transient Properties on Long-distance Ultra-high-pressure Heating Pipelines[J].Journal of Shanghai University of Electric Power,2016,32(5):428-432.