| 低压蒸汽透平排汽缸内三维粘性流动的数值模拟 |
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| 引用本文： | 徐旭,康顺,蒋洪德.低压蒸汽透平排汽缸内三维粘性流动的数值模拟[J].工程热物理学报,2000,21(4):430-433. |
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| 作者姓名： | 徐旭 康顺 蒋洪德 |
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| 作者单位： | 中国科学院工程热物理所,北京 100080 |
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| 基金项目： | 国家自然科学基金重点资助项目(No.59836232) |
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| 摘 要： | 采用三维粘性流场求解软件Fine／TURBO1]对低压蒸汽透平下游排汽缸内的复杂流动进行数值模拟。计算中使用了Jameson的Runge-Kutta中心差分格式2]和Baldwin-Lomax的代数湍流模型、计算结果同部分实验结果进行了对比，表明数值模拟揭示了排汽缸内复杂的旋涡结构，以及影响排气缸内压力恢复和总压损失的主要因素。
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| 关 键 词： | 蒸汽透平 排汽缸 粘性流动 数值模拟 |
| 文章编号： | 0253-231X(2000)04-0430-04 |
| 修稿时间： | 1999年5月12日 |
NUMERICAL SIMULATION OF THE 3D VISCOUS FLOW IN THE EXHAUST CASING OF A LOW PRESSURE STEAM TURBINE |
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| XU Xu,KANG Shun,JIANG Hongde.NUMERICAL SIMULATION OF THE 3D VISCOUS FLOW IN THE EXHAUST CASING OF A LOW PRESSURE STEAM TURBINE[J].Journal of Engineering Thermophysics,2000,21(4):430-433. |
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| Authors: | XU Xu KANG Shun JIANG Hongde |
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| Abstract: | The numerical simulation results of the 3D viscous flow in the downward ex haust casing of a Iow pressure steam turbine, obtained with the 3D Navier-Stokes solver Fine/TURBO, is presented in this paper. The central scheme of Jameson, together with thealgebraic turbulence model of Baldwin and Lomax are applied, and the grid points used in this work are nearly 310,000. The computational results are compared with the experimental data available. The numerical simulation result reveals the complex vortex structures in thecasing and the passage vortex is the main cause for the static pressure recovery reductionand total pressure losses. |
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| Keywords: | steam turbine exhaust casing viscous flow numerical simulation |
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