Sensitivity analysis of nuclear main pump annular casing tongue blend

doi:10.1177/1687814017706599

	Sensitivity analysis of nuclear main pump annular casing tongue blend
	Cheng, Xiaorui 1,2; Bao, Wenrui 1; Fu, Li 1; Ye, Xiaoting 1
刊名	ADVANCES IN MECHANICAL ENGINEERING
	2017-07-06
卷号	9 期号:7
关键词	Nuclear main pump annular casing tongue blend sensitivity analysis simulation
ISSN号	1687-8140
DOI	10.1177/1687814017706599
英文摘要	Based on the Reynolds-averaged Navier-Stokes equations of relative coordinates and the RNG k-epsilon turbulence model, using our SIMPLE algorithm, we performed numerical simulations for an AP1000 nuclear main pump model with water as the medium. By changing the size of the tongue blend in the annular casing, seven different schemes were designed. Three- dimensional numerical simulations were conducted for the flow within the pump under various settings, and the flow characteristics of the annular casing using different tongue blends were obtained. The results show that for different operating conditions, there is a specific tongue blend that optimizes pump performance. Based on the calculation results, a larger tongue blend leads to a larger flow rate. Off-design conditions caused flow instability, which in turn caused the tongue blend to have a certain impact on the performance of the impeller. However, the performance of the pump was not primarily affected by changes in the impeller performance, but was instead affected by the performance of the annular casing, which was itself affected by tongue blend. When changing the tongue blend, the change in static pressure and total pressure of the annular casing was larger under the condition of 0.6Q(d) and was smaller under the conditions of 1.0Q(d) and 1.4Q(d). The turbulent kinetic energy in the annular casing changed mainly in the tongue impact zone and outlet diffuser under the condition of 1.0Q(d); furthermore, the turbulent kinetic energy in the whole of the annular casing demonstrated significant changes under the conditions of 0.6Q(d) and 1.4Q(d).
资助项目	National Natural Science Foundation of China[51369015][51469013]
WOS研究方向	Thermodynamics ; Engineering
语种	英语
出版者	SAGE PUBLICATIONS LTD
WOS记录号	WOS:000405075900001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33195]
专题	能源与动力工程学院
通讯作者	Cheng, Xiaorui
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Key Lab Fluid Machinery & Syst, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xiaorui,Bao, Wenrui,Fu, Li,et al. Sensitivity analysis of nuclear main pump annular casing tongue blend[J]. ADVANCES IN MECHANICAL ENGINEERING,2017,9(7).
APA	Cheng, Xiaorui,Bao, Wenrui,Fu, Li,&Ye, Xiaoting.(2017).Sensitivity analysis of nuclear main pump annular casing tongue blend.ADVANCES IN MECHANICAL ENGINEERING,9(7).
MLA	Cheng, Xiaorui,et al."Sensitivity analysis of nuclear main pump annular casing tongue blend".ADVANCES IN MECHANICAL ENGINEERING 9.7(2017).