詳細乱流解析手法を用いたT字配管合流部の温度揺らぎ現象評価
Evaluation of Fluid Temperature Fluctuations in a Tee Pipe by Detailed Turbulence Simulations
著者:
堺 紀夫 Norio SAKAI 池田 浩 Hiroshi IKEDA 清水 武司 Takeshi SHIMIZU 瀧川 幸夫 Yukio TAKIGAWA 大島 伸行 Nobuyuki OHSHIMA
発刊日:
公開日:
High Cycle Thermal FatigueLarge Eddy SimulationTemperature Fluctuation
概要
Abstract: Temperature fluctuations. arising when fluids with different temperature are mixed. cause high cycle thermal fatigue to materials of plant components. Thus analyzing the characterist ics of these temperature fluctuations is important for plant maintenance. In this study, a large eddy simulation, one of the detailed turbulence simulation methods. was applied to the analysi s of two typical flow patterns with temperature fluctuations in a tee pipe. Results were compared with the experimental data. The simulation data showed good agreements with the experimental d ata for the shape of the average temperature distributions. The simulation accuracy of the temperature histograms at experimental probe points was improved by using finer computational grids.
