| 倪浩清,李福田.悬沙冲淤问题的湍流两相模型[J].水利学报,2006,37(4):411-417 |
| 悬沙冲淤问题的湍流两相模型 |
| Improved two-phase turbulent flow model for simulating suspended sediment laden flows |
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| DOI： |
| 中文关键词: 湍流 回流 浮力流 悬沙 两相代数雷诺应力模型 |
| 英文关键词: two phase turbulent flow model algebraic Reynolds stress model suspended sediment laden flow buoyant flow recirculating flow swirling flow numerical simulation |
| 基金项目: |
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| 中文摘要: |
| 在双流体模型框架内统一二阶矩两相湍流模型的基础上，建立了改进的悬沙冲淤问题的湍流两相模型-湍流代数应力模型，这一模型不仅能反映两相湍流的各向异性特征，并且更深刻揭示了悬沙颗粒与流体的湍流相互作用的机理，以及浮力、回流及旋流等的影响。适用于河口悬沙冲淤及水库泥沙异重流等工程问题的模拟计算。 |
| 英文摘要: |
| On the basis of unified two phase turbulent flow model with second order moment, an improved algebraic Reynolds stress model for calculating erosion and deposition of suspended sediment laden turbulent flows is developed. This model properly takes the anisotropic characteristics of the two phase turbulent flow into account and reveals the mechanism of interaction between suspension particles and fluid turbulence as well as the influences of buoyant flows, recirculating flows and swirling flows. It can be applied to numerically simulate the two phase sediment flow problems in engineering such as the deposition of suspended sediment laden flow in river mouths and density flow in reservoirs, etc. |
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