Study on force spectrum characteristics of a pump-jet under inflow turbulence

SHI Shuaikang; HUANG Xiuchang; RAO Zhiqiang; HUA Hongxing

doi:10.19693/j.issn.1673-3185.02249

Volume 17 Issue 1

Mar. 2022

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Ship Research > 2022 > 17(1): 1-10. > DOI: 10.19693/j.issn.1673-3185.02249 CSTR: 32390.14.j.issn.1673-3185.02249

SHI S K, HUANG X C, RAO Z Q, et al. Study on force spectrum characteristics of a pump-jet under inflow turbulence[J]. Chinese Journal of Ship Research, 2022, 17(1): 1–10. DOI: 10.19693/j.issn.1673-3185.02249

Citation:

PDF (2570 KB)

Study on force spectrum characteristics of a pump-jet under inflow turbulence

SHI Shuaikang^{1, 2,},
HUANG Xiuchang^{1, 2, ,},
RAO Zhiqiang^{1, 2},
HUA Hongxing^{1, 2}

1.
Institute of Vibration, Shock and Noise, Shanghai Jiao Tong University, Shanghai 200240, China
2.
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China

More Information

Received Date: December 30, 2020
Revised Date: April 01, 2021
Available Online: May 25, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Graphical Abstract

Abstract

Abstract

Objectives This paper aims to clarify the characteristics of the unsteady force spectrum of a pump-jet operating under inflow turbulence.
Methods The turbulence grid and Fourier synthesis method are employed to produce inflow turbulence with spatial flow structure and temporal fluctuation, combined with large eddy simulation (LES) to obtain the broadband unsteady force spectrum of the pump-jet.
Results The results show that the proposed method can obtain the unsteady force broadband spectrum for the duct, stator and rotor. The unsteady force broadband spectrum of the pump-jet is composed of the ''humps'' around the blade passing frequency and its multiples, the characteristic line spectrum at the stator blade passing frequency and the shaft frequency of the adjacent stator multiples. As the number of blades increases, the ''humps'' become more obvious and the characteristic peaks change periodically and reach the minimum when the number of blades is equal to the number of rotors. Due to the use of the stator and duct, the amplitudes of the unsteady force broadband spectrum of the pump-jet are higher than those of the propeller, but the ''humps'' are not as obvious.
Conclusions The results of this paper can be helpful for clarifying the unsteady force characteristics of a pump-jet induced by inflow turbulence, and provide ideas for the vibration and noise reduction of pump-jets.
- pump-jet,
- turbulence,
- large eddy simulation (LES),
- broadband spectrum

FullText(HTML)

References (22)

References

[1]	BLAKE W K. Mechanics of flow-induced sound and vibration[M]. Orlando: Academic Press, 1986: 10-12.
[2]	华宏星, 俞强. 船舶艉部激励耦合振动噪声机理研究进展与展望[J]. 中国舰船研究, 2017, 12(4): 6–16. doi: 10.3969/j.issn.1673-3185.2017.04.002 HUA H X, YU Q. Structural and acoustic response due to excitation from ship stern: overview and suggestions for future research[J]. Chinese Journal of Ship Research, 2017, 12(4): 6–16 (in Chinese). doi: 10.3969/j.issn.1673-3185.2017.04.002
[3]	BENNAYA M, ZHANG W P, HEGAZE M M. Estimation of the induced hydrodynamic periodic forces of marine propeller under non-uniform inflow via CFD[J]. Applied Mechanics and Materials, 2014, 467: 293–299.
[4]	ANDERSON J M, CATLETT M R, STEWART D O. Modeling rotor unsteady forces and sound due to homogeneous turbulence ingestion[J]. AIAA Journal, 2015, 53(1): 35–45.
[5]	SEVIK M. Sound radiation from a subsonic rotor subjected to turbulence [C]//Proceedings of the International Symposium on Fluid Mechanics and Design of Turbomachinery. University Park, PA: The Pennsylvania State University, 1974, 304: 493–512.
[6]	KIRSCHNER I N, CORRIVEAU P J, MUENCH J D, et al. Validation of an in-air acoustic radiation model using wind-tunnel measurements [C]//ASME Symposium on Flow Noise Modeling, Measurement, and Control, NCA 15ASME Symposium on Flow Noise Modeling, Measurement, and Control. ASME, 1993, 168: 1–5.
[7]	CHEN Y, WANG L, HUA H X. Longitudinal vibration of marine propeller-shafting system induced by inflow turbulence[J]. Journal of Fluids and Structures, 2017, 68: 264–278. doi: 10.1016/j.jfluidstructs.2016.11.002
[8]	谌勇, 童贤东, 华宏星. 湍流进流诱发的螺旋桨-轴系纵向振动特性研究[J]. 中国造船, 2017, 58(2): 46–59. doi: 10.3969/j.issn.1000-4882.2017.02.006 CHEN Y, TONG X D, HUA H X. Elastic vibration of marine propeller-shaft system induced by ingested turbulence[J]. Shipbuilding of China, 2017, 58(2): 46–59 (in Chinese). doi: 10.3969/j.issn.1000-4882.2017.02.006
[9]	王力, 谌勇, 郭云松, 等. 均匀湍流诱发的侧斜螺旋桨的随机振动特性研究[J]. 振动与冲击, 2018, 37(5): 7–12. WANG L, CHEN Y, GUO Y S, et al. Random vibration of a skewed propeller-shaft system induced by homogeneous turbulence[J]. Journal of Vibration and Shock, 2018, 37(5): 7–12 (in Chinese).
[10]	TUTAR M, CELIK I, YAVUZ I. Modelling of effect of inflow turbulence on large eddy simulation of bluff body flows[J]. Mathematical and Computational Applications, 2006, 11(3): 225–234. doi: 10.3390/mca11020225
[11]	YAO H Y, CAO L L, WU D Z, et al. Generation and distribution of turbulence-induced forces on a propeller[J]. Ocean Engineering, 2020, 206: 107255. doi: 10.1016/j.oceaneng.2020.107255
[12]	于丰宁, 邹冬林, 饶柱石, 等. 泵喷推进器在敞水与艇后的激励力计算分析[J]. 船海工程, 2019, 48(4): 96–101. doi: 10.3963/j.issn.1671-7953.2019.04.022 YU F N, ZOU D L, RAO Z S, et al. Analysis on exciting force of open water pump-jet and submarine with pump-jet[J]. Ship & Ocean Engineering, 2019, 48(4): 96–101 (in Chinese). doi: 10.3963/j.issn.1671-7953.2019.04.022
[13]	姜汉. 泵喷推进器激振力特性数值分析[D]. 哈尔滨: 哈尔滨工程大学, 2017. JIANG H. Numerical analysis of exciting force characteristic for pump jet propulsor[D]. Harbin: Harbin Engineering University, 2017 (in Chinese).
[14]	KOBAYASHI T. Large Eddy simulation for engineering applications[J]. Fluid Dynamics Research, 2006, 38(2/3): 84–107.
[15]	GEURTS B J, HOLM D D. Commutator errors in large-eddy simulation[J]. Journal of Physics A: Mathematical and General, 2006, 39(9): 2213–2229. doi: 10.1088/0305-4470/39/9/015
[16]	CLARK R A, FERZIGER J H, REYNOLDS W C. Evaluation of subgrid-scale models using an accurately simulated turbulent flow[J]. Journal of Fluid Mechanics, 1979, 91(1): 1–16. doi: 10.1017/S002211207900001X
[17]	MCMILLAN O J, FERZIGER J H. Direct testing of subgrid-scale models[J]. AIAA Journal, 1979, 17(12): 1340–1340. doi: 10.2514/3.61313
[18]	FELTEN F, FAUTRELLE Y, TERRAIL Y D, et al. Numerical modelling of electromagnetically-driven turbulent flows using LES methods[J]. Applied Mathematical Modelling, 2004, 28(1): 15–27. doi: 10.1016/S0307-904X(03)00116-1
[19]	SMIRNOV A, SHI S, CELIK I. Random flow generation technique for large eddy simulations and particle-dynamics modeling[J]. Journal of Fluids Engineering, 2001, 123(2): 359–371. doi: 10.1115/1.1369598
[20]	KRAICHNAN R H. Diffusion by a random velocity field[J]. The Physics of Fluids, 1970, 13(1): 22–31. doi: 10.1063/1.1692799
[21]	王力. 湍流进流诱发的螺旋桨轴系统随机振动特性分析[D]. 上海: 上海交通大学, 2017. WANG L. Random vibration of propeller-shaft system induced by inflow turbulence[D]. Shanghai: Shanghai Jiao Tong University, 2017 (in Chinese).
[22]	蒲汲君, 周其斗, 孟庆昌. 湍流中螺旋桨激振力宽频谱及参数影响研究[J]. 船舶力学, 2020, 24(1): 1–7. doi: 10.3969/j.issn.1007-7294.2020.01.001 PU J J, ZHOU Q D, MENG Q C. Study of propeller broadband thrust spectrum and the effects of coefficient in turbulence[J]. Journal of Ship Mechanics, 2020, 24(1): 1–7 (in Chinese). doi: 10.3969/j.issn.1007-7294.2020.01.001

Cited By

Citation

XML

PDF in Chinese

Article views (1050) PDF downloads (178)

Study on force spectrum characteristics of a pump-jet under inflow turbulence

Abstract

References

Catalog

Related

Study on force spectrum characteristics of a pump-jet under inflow turbulence

Abstract

References

Catalog

Related

Export File

Citation

Format

Content