离心泵内部流动数值分析及应用

本书以对我国经济建设和国家安全有着重要现实意义的流程离心泵和航天发动机离心泵为具体工程背景，从基础理论、数值模拟和内外特性实验等方面，对离心泵内部流动具有的跨尺度、非线性、动静干涉等特征开展了系统深入的研究，构建了适用于实际工况、计算效率适宜的湍流计算模型，获得了离心泵全流量工况、高精度的全流场信息，提出了内部流动不稳定的参数化表征和判断依据，建立了外特性不稳定表征与内部流动不稳定之间的关系，从而揭示了离心泵内部流动特性对外特性的影响规律，为完善高性能离心泵的设计开发和可靠运行提供了技术支撑。本书可作为流体机械、叶轮机械教学和科研人员的参考书，也可为离心泵产品设计和实际应用的有关技术人员提供重要的借鉴和指导。

朱祖超，男，1966年生，工学博士、教授、博导，钱江特聘教授，现为浙江理工大学流体传输系统技术国家地方联合工程实验室主任，主要从事流体传输技术的理论研究和工程应用开发。主持国家自然科学基金和国家863计划等项目20多项，作为第一完成人获国家科技进步二等奖1项和省部级科技进步二等奖4项，曾获教育部新世纪人才培养人员、高等院校霍英东优秀青年教师奖、浙江省有突出贡献中青年专家、151人才重点资助人员、青少年英才一等奖和优秀博士后等荣誉称号。

前言第1章绪论11离心泵简介12离心泵内部流动121离心泵内部流动不稳定数值分析122离心泵内部流动不稳定的表征123离心泵内部不稳定流动实验124离心泵的内外关联125转速对高速离心泵内部流场的影响126动静干涉对高速离心泵内部流场的影响13空化流动与诱导轮131空化模型和数值方法132空化状态下诱导轮内气泡的演化规律133来流含气对诱导轮空化发展的影响134诱导轮低温介质的空化特性135离心泵内的空化实验14控制方程和湍流数值模型141湍流RANS数值模型142湍流LES数值模型143湍流RANS/LES混合模型144空化模型第2章离心泵湍流模拟及发展21湍流RANS模型211基于SST kω湍流模型的改进212基于kω湍流模型的PR修正213联合考虑旋转和曲率的湍流模型改进22湍流大涡模拟221亚格子应力的螺旋度修正222基于螺旋度修正的大涡模拟分析23湍流混合模型231基于IDDES的方法改进232模型验证与结果分析离心泵内部流动数值分析及应用目录第3章离心泵内部流动不稳定表征31能量梯度方法简介311压力驱动流动312剪切驱动流动313通用能量梯度函数32离心叶轮内能量梯度及其变化率321能量梯度322能量梯度变化率33基于能量梯度的微型离心泵的不稳定流动表征331几何模型和计算方法332结果讨论及分析34其他不稳定表征方法341基于熵产分析方法的离心泵内不稳定流动的表征342离心泵进口不稳定回流的形成和演化过程343基于全局线性稳定性敏感性分析的不稳定流动模态表征第4章空化流动与诱导轮41基于OpenFOAM的绕水翼空化流动与湍动能输运分析411绕水翼空化流动特性分析412空化流动中湍动能输运分析42诱导轮离心泵内空化流动特性421无诱导轮离心泵内部流动的数值模拟422诱导轮内部流动特性423诱导轮离心泵空化特性的数值模拟424诱导轮离心泵外特性和空化特性实验第5章泵内数值模拟与性能预测51模型泵数值方法及验证511模型及方法512模拟参数设置513实验验证及分析514数值结果分析52模型泵性能预测及分析521偏工况下离心泵内主流场的不稳定流动特性522次流动区流动对瞬态压力脉动的影响523振动能量与内部流动损失的分析53大功率离心泵内部流动及分析531两级高速离心泵的非定常流动分析532五级离心泵内部的非定常流动分析533十级离心泵内部的非定常流动分析534十一级离心泵内部的非定常流动分析参考文献ContentsPrefaceChapter 1Introduction11Introduction to centrifugal pumps12Internal flow in centrifugal pumps121Numerical analysis on the instability of internal flow in centrifugal pumps122Characterization of the instability of internal flow in centrifugal pumps123Experiments on unstable flow in centrifugal pumps124Correlation of internal flow and performance of centrifugal pumps125Effect of rotation speed on internal flow in highspeed centrifugal pumps126Effect of rotorstator interaction on internal flow in highspeed centrifugal pumps13Cavitating flow and inducers131Cavitation model and numerical methods132Evolution patterns of bubbles in inducers under cavitation state133Influence of incoming flow with gas on the development of cavitation in inducers134Cavitation characteristics of lowtemperature medium in inducers135Experiments on cavitation in centrifugal pumps14Governing equations and turbulence models141RANS models142LES model143RANS/LES hybrid models144Cavitation modelsChapter 2Turbulence Flow Simulations and Model Improvements21RANS models211Improvement based on the SST kω turbulence model212PR correction based on the kω turbulence model213Improvement of turbulence model considering joint effect of rotation and curvatureNumerical Analysis on Internal Flow in Centrifugal Pumps and Its Applications Contents22Large eddy simulation221Helicity correction of SGS222Large eddy simulation analysis based on the helicity correction23Turbulent hybrid models231Improvement based on the IDDES turbulence model232Model verification and result analysisChapter 3Characterization of the Flow Instability in Centrifugal Pumps31Introduction to the energy gradient method311Pressuredriven flow312Sheardriven flow313General energy gradient function32Energy gradient and its rate of change in centrifugal impellers321Energy gradient322Rate of change of energy gradient33Characterization of unstable flow in a microcentrifugal pump based on the energy gradient method331Geometric models and computation methods332Discussion and analysis of results34Other characterization methods on unstable flow341Characterization on unstable flow in centrifugal pumps based on the entropy generation analysis method342Formation and evolution of unstable reversed flow at the inlet of centrifugal pumps343Modal characterization of unstable flow based on global linear stabilitysensitivity analysisChapter 4Cavitating Flow and Inducers41OpenFOAMbased analysis of cavitating flow and turbulent kinetic energy transport around a hydrofoil411Analysis of cavitating flow characteristics around a hydrofoil412Analysis of turbulent kinetic energy transport in cavitating flow42Cavitating flow characteristics in the centrifugal pumps with inducers421Numerical simulation of internal flow in centrifugal pumps without inducers422Flow characteristics in inducers423Numerical simulation of cavitation characteristics in centrifugal pumps with inducers424Experimental study on the performance and cavitation characteristics in the centrifugal pumps with inducersChapter 5Numerical Simulation and Performance Prediction of Pumps51Numerical method and verification in model pumps511Models and methods512Settings of simulation parameter 513Experimental verification and analysis514Analysis of numerical results52Performance prediction and analysis in model pumps521Characteristics of unstable primary flow in centrifugal pumps under partial working conditions522Effect of secondary flow on transient pressure fluctuation523Analysis of vibration energy and internal flow loss53Internal flow and analysis of highpower centrifugal pumps531Transient flow analysis of a twostage highspeed centrifugal pump532Transient flow analysis of a fivestage centrifugal pump533Transient flow analysis of a tenstage centrifugal pump534Transient flow analysis of an elevenstage centrifugal pump前言第1章绪论11离心泵简介12离心泵内部流动121离心泵内部流动不稳定数值分析122离心泵内部流动不稳定的表征123离心泵内部不稳定流动实验124离心泵的内外关联125转速对高速离心泵内部流场的影响126动静干涉对高速离心泵内部流场的影响13空化流动与诱导轮131空化模型和数值方法132空化状态下诱导轮内气泡的演化规律133来流含气对诱导轮空化发展的影响134诱导轮低温介质的空化特性135离心泵内的空化实验14控制方程和湍流数值模型141湍流RANS数值模型142湍流LES数值模型143湍流RANS/LES混合模型144空化模型第2章离心泵湍流模拟及发展21湍流RANS模型211基于SST kω湍流模型的改进212基于kω湍流模型的PR修正213联合考虑旋转和曲率的湍流模型改进22湍流大涡模拟221亚格子应力的螺旋度修正222基于螺旋度修正的大涡模拟分析23湍流混合模型231基于IDDES的方法改进232模型验证与结果分析离心泵内部流动数值分析及应用目录第3章离心泵内部流动不稳定表征31能量梯度方法简介311压力驱动流动312剪切驱动流动313通用能量梯度函数32离心叶轮内能量梯度及其变化率321能量梯度322能量梯度变化率33基于能量梯度的微型离心泵的不稳定流动表征331几何模型和计算方法332结果讨论及分析34其他不稳定表征方法341基于熵产分析方法的离心泵内不稳定流动的表征342离心泵进口不稳定回流的形成和演化过程343基于全局线性稳定性敏感性分析的不稳定流动模态表征第4章空化流动与诱导轮41基于OpenFOAM的绕水翼空化流动与湍动能输运分析411绕水翼空化流动特性分析412空化流动中湍动能输运分析42诱导轮离心泵内空化流动特性421无诱导轮离心泵内部流动的数值模拟422诱导轮内部流动特性423诱导轮离心泵空化特性的数值模拟424诱导轮离心泵外特性和空化特性实验第5章泵内数值模拟与性能预测51模型泵数值方法及验证511模型及方法512模拟参数设置513实验验证及分析514数值结果分析52模型泵性能预测及分析521偏工况下离心泵内主流场的不稳定流动特性522次流动区流动对瞬态压力脉动的影响523振动能量与内部流动损失的分析53大功率离心泵内部流动及分析531两级高速离心泵的非定常流动分析532五级离心泵内部的非定常流动分析533十级离心泵内部的非定常流动分析534十一级离心泵内部的非定常流动分析参考文献ContentsPrefaceChapter 1Introduction11Introduction to centrifugal pumps12Internal flow in centrifugal pumps121Numerical analysis on the instability of internal flow in centrifugal pumps122Characterization of the instability of internal flow in centrifugal pumps123Experiments on unstable flow in centrifugal pumps124Correlation of internal flow and performance of centrifugal pumps125Effect of rotation speed on internal flow in highspeed centrifugal pumps126Effect of rotorstator interaction on internal flow in highspeed centrifugal pumps13Cavitating flow and inducers131Cavitation model and numerical methods132Evolution patterns of bubbles in inducers under cavitation state133Influence of incoming flow with gas on the development of cavitation in inducers134Cavitation characteristics of lowtemperature medium in inducers135Experiments on cavitation in centrifugal pumps14Governing equations and turbulence models141RANS models142LES model143RANS/LES hybrid models144Cavitation modelsChapter 2Turbulence Flow Simulations and Model Improvements21RANS models211Improvement based on the SST kω turbulence model212PR correction based on the kω turbulence model213Improvement of turbulence model considering joint effect of rotation and curvatureNumerical Analysis on Internal Flow in Centrifugal Pumps and Its Applications Contents22Large eddy simulation221Helicity correction of SGS222Large eddy simulation analysis based on the helicity correction23Turbulent hybrid models231Improvement based on the IDDES turbulence model232Model verification and result analysisChapter 3Characterization of the Flow Instability in Centrifugal Pumps31Introduction to the energy gradient method311Pressuredriven flow312Sheardriven flow313General energy gradient function32Energy gradient and its rate of change in centrifugal impellers321Energy gradient322Rate of change of energy gradient33Characterization of unstable flow in a microcentrifugal pump based on the energy gradient method331Geometric models and computation methods332Discussion and analysis of results34Other characterization methods on unstable flow341Characterization on unstable flow in centrifugal pumps based on the entropy generation analysis method342Formation and evolution of unstable reversed flow at the inlet of centrifugal pumps343Modal characterization of unstable flow based on global linear stabilitysensitivity analysisChapter 4Cavitating Flow and Inducers41OpenFOAMbased analysis of cavitating flow and turbulent kinetic energy transport around a hydrofoil411Analysis of cavitating flow characteristics around a hydrofoil412Analysis of turbulent kinetic energy transport in cavitating flow42Cavitating flow characteristics in the centrifugal pumps with inducers421Numerical simulation of internal flow in centrifugal pumps without inducers422Flow characteristics in inducers423Numerical simulation of cavitation characteristics in centrifugal pumps with inducers424Experimental study on the performance and cavitation characteristics in the centrifugal pumps with inducersChapter 5Numerical Simulation and Performance Prediction of Pumps51Numerical method and verification in model pumps511Models and methods512Settings of simulation parameter 513Experimental verification and analysis514Analysis of numerical results52Performance prediction and analysis in model pumps521Characteristics of unstable primary flow in centrifugal pumps under partial working conditions522Effect of secondary flow on transient pressure fluctuation523Analysis of vibration energy and internal flow loss53Internal flow and analysis of highpower centrifugal pumps531Transient flow analysis of a twostage highspeed centrifugal pump532Transient flow analysis of a fivestage centrifugal pump533Transient flow analysis of a tenstage centrifugal pump534Transient flow analysis of an elevenstage centrifugal pump