Abstract:In order to improve the cleaning efficiency and the cleaning quality of guide plate type fan nozzle jet, and optimize its structure, several 3D medels of the fan nozzle jet at different diversion distances,diversion angles and cleaning distances are established by using Pro/E software, which is aimed at the flow field characteristics of fan nozzle jet only around water. Based on the standard k-ε model, the numerical simulation of jet flow field is conducted for its flow velocity and pressure by the ANSYS Workbench software. The changing regularity of these models′ jet flow characteristics under the same boundary and initial condition is analyzed, which is beneficial to the design and optimiztion the guide board type fan nozzle. The results show that with the increase of inclination θ, the blowing pressure on the cleaned piece gradually decreases; on the contrary the clean range increases. As cleaning distance increases, the pressure on the cleaned part axis gradually decreases. And the clean range slightly increases. Thus, the cleaning effect of fan nozzle of guide board type is the best under the condition that the faninclination is 20°, the fan striking distance is 15 mm or 20 mm and installation height of nozzle is between 80 mm and 120 mm.The conclusion can provide reference for the design and optimization of fan nozzle.
杨雨, 邱涛. 导板式扇形喷嘴清洗射流流场的数值模拟[J]. 排灌机械工程学报, 2017, 35(3): 243-247.
YANG Yu, QIU Tao. Numerical simulation of fan nozzle of guide board type cleaning jet flow field. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(3): 243-247.
[1]薛胜雄.高压水射流技术工程[M].合肥:合肥工业大学出版社,2006.[2]任建新.物理清洗[M].北京:化学工业出版社,2000.[3]杨志贤,相明明. 超高压水射流喷嘴机构的设计及试验[J]. 江苏大学学报(自然科学版),2015,36(5):522-526. YANG Zhixian, XIANG Mingming. Design and experiment of nozzle mechanism for ultra high pressure water stream[J]. Journal of Jiangsu University(natural scie-nce edition), 2015,36(5):522-526.(in Chinese)[4]BERNOLD L E, TAI S L, KOO J K, et al. Automated eco-friendly road stripe removal system[J]. Automation in construction, 2010, 19(6):694-701.[5]YARAVINTELIMATH A, RAGHUNANDAN B N, MORÍÑIGO J A. Numerical prediction of nozzle flow separation: issue of turbulence modeling[J]. Aerospace science & technology, 2016, 50:31-43.[6]ZHANG F, WANG X, LI J. Numerical investigation of flow and heat transfer characteristics in radial pre-swirl system with different pre-swirl nozzle angles[J]. International journal of heat & mass transfer, 2016, 95:984-995.[7]张建平,何海星,申强. 自动化钻杆内外壁清洗机的设计与应用[J].石油机械,2013,41(8): 32-35. ZHANG Jianping, HE Haixing, SHEN Qiang. Design and application of automatic cleaner for inner and outer wall of drill pipe[J]. China petroleum machinery, 2013,41(8):32-35.(in Chinese)[8]任小增,彭高明,唐勇. 清洗用扇形喷嘴结构参数对其内部射流的影响[J]. 流体机械,2009,37(3):28-33. REN Xiaozeng, PENG Gaoming, TANG Yong. Research of influence on internal flow field of structure of fan-shaped nozzles used in water jet cleaning[J]. Fluid machinery,2009,37(3):28-33.(in Chinese)[9]QIU T, SONG X, LEI Y, et al. Effect of back pressure on nozzle inner flow in fuel injector[J]. Fuel, 2016, 173:79-89.[10]JEFFERS N, STAFFORD J, CONWAY C, et al. The influence of the stagnation zone on the fluid dynamics at the nozzle exit of a confined and submerged impinging jet[J]. Experiments in fluids, 2016, 57(2):1-15.[11]陈晓晨,邓松圣,郭联欢,等. 不同形状喷嘴内流场模拟分析[J]. 后勤工程学院学报, 2015(1):34-37,50. CHEN Xiaochen, DENG Songsheng, GUO Lianhuan, et al. Simulation analysis of flow field inside different shaped nozzles[J]. Journal of Logistical Engineering University, 2015(1):34-37, 50.(in Chinese)[12]王国志,冉春燕,邓斌,等. 基于FLUENT远距离冲洗喷嘴的射流特性研究[J]. 液压气动与密封, 2016,36(1):31-34,39. WANG Guozhi, RAN Chunyan, DENG Bin, et al. Study on the jet characteristics of the remote flushing nozzle based on fluent[J]. Hydraulics pneumatics & seals, 2016,36(1):31-34,39.(in Chinese)[13]杜长河,范小军,李亮,等. 喷射角度和喷嘴数对旋流冷却流动与传热特性的影响[J]. 西安交通大学学报, 2016,50(4):1-6. DU Changhe, FAN Xiaojun, LI Liang, et al. Influences of jet angle and jet nozzle number on flow and heat transfer characteristics of swirl cooling[J]. Journal of Xi′an Jiaotong University, 2016,50(4):1-6.(in Chinese)[14]莫丽,杨琪,刘海鲲. 钻杆外壁清洗射流流场的数值分析[J]. 流体机械,2015,43(2):24-28. MO Li, YANG Qi, LIU Haikun. Numerical analysis for jet flow field on cleaning the outer wall of drill pipe[J]. Fluid machinery,2015,43(2):24-28.(in Chinese)[15]高慧,宋宇宸,韩博.可压缩轴对称冲击射流流场的数值模拟[J]. 中国石油大学学报(自然科学版),2012,36(1):80-84. GAO Hui, SONG Yuchen, HAN Bo. Numerical simulation of compressible axisymmetric impinging jet[J]. Journal of China University of Petroleum(natural science edition),2012,36(1):80-84.(in Chinese)