摘要
为验证混流式喷水泵叶轮的加工精度和质量,将加工后的混流泵叶轮进行台架试验,并基于SST模型采用全结构化网格对台架试验进行非定常数值模拟。数值计算结果表明:在设计流量下数值计算得到的混流泵扬程和功率与试验数据的误差为1.3%和2.3%,在计算流量范围内,混流泵扬程和功率的最大误差小于4%,说明了该混流泵的加工精度满足工程要求。为进一步验证混流泵的设计水平,对其装船后性能进行了数值计算和实船试航,试航结果表明,该混流泵的推进航速超过设计航速9.4%,并且数值预报航速与试航结果误差为1.5%,这既验证了设计方法的有效性,也验证了所采用的数值模型的准确性。
In order to validate the quality of the manufacture of mixed-flow pumps, a bench test of the mixed-flow pump and its unsteady simulation were performed with the SST turbulent model and hexagonal structure mesh. The numerical simulation results indicated that, within the design flow, the error rates of the head and power of the mixed-flow pump between the simulation and bench test were 1.3% and 2.3%, while the maximum error rate was below 4% in the whole calculating region. As a result, the machining accuracy of the mixed-flow pump meets the engineering requirements. In the final stage, the self-propulsion test of the ship with the mixed-flow pump was carried out, and the maximum advance speed of the ship exceeded the design speed by 9.4%, and the calculated speed of the ship from CFn was consistent with the test data with the error rate of 1.5%, which validates the credibility of this design method as well as the accuracy of the adopted numerical model.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2014年第1期115-118,共4页
Journal of Harbin Engineering University
基金
国家自然科学基金资助项目(51309229)
关键词
混流泵
台架试验
实船试航
数值模拟
非定常数值模拟
mixed-flow pump
bench test
self-propulsion test
numerical simulation
unsteady simulation
