渣浆泵内部流场数值模拟.pdfVIP

摘要 渣浆泵应用的比较广范，在国民经济各个领域都展示着它的能力， 可谓潜力无限。就当今发展来看，我们对渣浆泵的研究，只能用一般 来形容。因为，渣浆泵的研究，受到了实验条件，理论基础等方面的 制约，对它的认识还需要我们继续努力。目前，比较流行的 CFD 模拟 方法，被广发的应用，这就大大简化了我们对渣浆泵的研究，方便了 我们更加直观地了解渣浆泵。 本文借助 FLUENT 这个软件系统平台，对用 Pro/ENGINEER 建立 的三维模型进行了模拟分析，并分别选取了渣浆泵的两种浓度、两种 粒径，来做比较。在不同浓度、不同粒径下，研究了叶轮和蜗壳的压 力场、速度场的变化规律。通过得出的压力分布、固相浓度分布、速 度分布等流场信息，研究了渣浆泵内部流场的流动规律，得出泵内磨 损的主要部位在叶轮进口叶片工作面侧和叶轮出口叶片背面侧，蜗壳 隔舌部位以及蜗壳最大半径处。 本文的计算结果大体和实际情况相一致，说明 CFD 模拟具有一定 的可靠性，为今后的优化设计提供了一定的参考依据。 关键词：渣浆泵；内部流场；CFD ； 数值模拟 I Abstract Slurry Pump is widely used in water conservation. It is used to deliver the fluid of high density which is formed by solid-liquid mixed. The design of the slurry pump usually based on the work condition of delivering water ，which lead to the low operational efficiency ，high noise and heavy coneentrated wear;lead to largely waste of the energy and equipment ， so it is very important to know about the flowing distributions.Experiment is the most direct and trusty but the investment is very large ，the period is very long. Th e analyzing ability on the flowing fields and the remote flow structures will also be restrieted 。But use the CFD software to simulate the Inner Flow Field ca st lowly and it can reflect the distribution of the inner Flow Fieldcorrectly and direetly. The entity model of slurry pump is generated,used the more mature model to enclosed equation th e equation.adopt the limited volume method to the enclose equations set ，press amendment use the SIMPLE algorithm in this paper. Two different grain sizes and tw o different inlet initial solid phase consisteney have simulated in