双腔室自振脉冲喷嘴数值分析与实验研究
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摘要
基于水声学原理和瞬变流理论,并结合标准的κ-ε模型,以双腔室自振脉冲喷嘴为研究对象,通过改变第二级腔室结构,应用FLUENT软件对该喷嘴进行内外流场数值模拟,得到了打击力最强的腔室结构,并将其与单腔室自振脉冲喷嘴打击力进行对比。研究结果表明,存在最佳腔长、腔径和下游碰撞壁形状时该喷嘴打击力最大且双腔室自振脉冲喷嘴打击力较单腔室大13.2%。构建实验装置进行冲蚀实验,通过分析不同结构的喷嘴对岩石的冲蚀规律以及统计冲蚀体积和深度。结果表明,冲蚀实验的喷嘴最佳结构与数值模拟相一致,与单腔的Helmholtz自激振荡喷嘴相比冲蚀体积和冲蚀深度提高了14.5%和12.6%。
With dual chamber self-excited oscillation pulsed jet nozzle as the research object,changing the structure of the second stage chamber as the variables,the inner and outer flow fields of the jet nozzle were simulated by using FLUENT.These studies are based on the theories of transient flow and underwater acoustics,and combined with the standard κ-ε model.The structural chamber of the strongest hitting power is obtained,and hitting power was compared with self-excited oscillation pulsed jet nozzle.Research results show that the nozzle has the largest hitting power with optimal cavity length,cavity diameter and downstream collision wall shape of the nozzle,and hitting power of self-excited oscillation pulsed jet nozzle is more than the single chamber 13.2%.An experiment was built to make the erosion test,erosion law of rock was analyzed,and erosion volume and depth were computed.The results show that the best structure of the nozzle is in agreement with the numerical simulation;Compared with the single chamber Helmholtz self-excited oscillation pulsed jet nozzle,the erosion volume and depth increased by 14.5% and 12.6%.
With dual chamber self-excited oscillation pulsed jet nozzle as the research object,changing the structure of the second stage chamber as the variables,the inner and outer flow fields of the jet nozzle were simulated by using FLUENT.These studies are based on the theories of transient flow and underwater acoustics,and combined with the standard κ-ε model.The structural chamber of the strongest hitting power is obtained,and hitting power was compared with self-excited oscillation pulsed jet nozzle.Research results show that the nozzle has the largest hitting power with optimal cavity length,cavity diameter and downstream collision wall shape of the nozzle,and hitting power of self-excited oscillation pulsed jet nozzle is more than the single chamber 13.2%.An experiment was built to make the erosion test,erosion law of rock was analyzed,and erosion volume and depth were computed.The results show that the best structure of the nozzle is in agreement with the numerical simulation;Compared with the single chamber Helmholtz self-excited oscillation pulsed jet nozzle,the erosion volume and depth increased by 14.5% and 12.6%.
引文
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[12]王健,李江云,关凯.自激脉冲喷嘴装置试验研究[J].工程热物理学报,2014,35(4):678-681Wang J,Li J Y,Guan K.Experimental study of selfexcited pulse jet[J].Journal of Engineering Thermophysics,2014,35(4):678-681(in Chinese)
[13]高传昌,雷霆.自激振荡脉冲射流喷嘴装置系统频率特性理论研究[J].应用力学学报,2010,27(1):33-38Gao C C,Lei T.Frequency characteristics of self-excited oscillation pulsed jet nozzle device[J].Chinese Journal of Applied Mechanics,2010,27(1):33-38(in Chinese)
[14]王乐勤,王循明,徐如良,等.低压大流量自激振荡脉冲射流喷嘴结构参数优化研究[J].流体机械,2004,32(3):7-10,31Wang L Q,Wang X M,Xu R L,et al.Structureparameter optimized study of self-excited oscillation pulsation-jet nozzle in low-press and amount-flux[J].Fluid Machinery,2004,32(3):7-10,31(in Chinese)
[15]周利坤,刘宏昭.用自适应粒子群算法求解自激脉冲喷嘴结构参数模型[J].吉林大学学报(工学版),2012,42(6):1415-1420Zhou L K,Liu H Z.Soving the self-excited pulsed nozzle structural parameters of the model by adaptive particle swarm algorithm[J].Journal of Jilin University(Engineering and Technology Edition),2012,42(6):1415-1420(in Chinese)
[16]王乐勤,王循明,徐如良,等.自激振荡脉冲喷嘴结构参数配比试验研究[J].工程热物理学报,2004,25(6):956-958Wang L Q,Wang X M,Xu R L,et al.Experimental Study on structural parameters optimized design of the self-excited oscillation pulsed jet nozzle[J].Journal of Engineering Thermophysics,2004,25(6):956-958(in Chinese)
[17]裴江红,唐川林,胡东.双腔室自激振荡喷嘴频率特性研究[J].振动与冲击,2011,30(4):29-32Pei J H,Tang C L,Hu D.Self-excited oscillation frequency feature of a pulsed water jet nozzle with double-chamber[J].Journal of Vibration and Shock,2011,30(4):29-32(in Chinese)
[2]吕晓平,安朝明,胡水艳,等.自激谐振脉冲射流在玉门鸭945井的应用[J].石油钻采工艺,2009,31(4):45-47Lv X P,An C M,Hu S Y,et al.Application of selfexcited oscillation pulsed jet in Ya 945 well,Yumen Oilfield[J].Oil Drilling&Production Technology,2009,31(4):45-47(in Chinese)
[3]Rehbinder G.Investigation of water jet pulses generated by an impact piston device[J].Applied Scientific Research,1983,40(1):7-37
[4]刘小健.脉冲射流技术的原理及其应力特性研究[J].山东轻工业学院学报,2005,19(2):5-9Liu X J.The principle of pulse jet technology and its stress characteristic study[J].Journal of Shandong Institute of Light Industry,2005,19(2):5-9(in Chinese)
[5]唐川林,廖振方.石油钻井钻头用自激振荡喷嘴的研究[J].石油学报,1993,14(1):124-130Tang C L,Liao Z F.A study on self-excited oscillation nozzle for a drill bit[J].Acta Petrolei Sinica,1993,14(1):124-130(in Chinese)
[6]常建勇,剧元达,童明浒,等.大流量脉冲射流采煤技术[J].水力采煤与管道运输,2001,3(1):18-22Chang J Y,Ju Y D,Tong M H,et al.Heavy flow pulse hydraulic jet coal mining technology[J].Hydraulic Coal Mining&Pipeline Transportation,2001,3(1):18-22(in Chinese)
[7]Rockwell D,Naudascher E.Review-self-sustaining oscillations of flow past cavities[J].Journal of Fluids Engineering,1978,100(2):152-165
[8]唐川林,廖振方.自激振动脉冲射流装置的理论分析和实验研究[J].煤炭学报,1989,14(1):90-100Tang C L,Liao Z F.Theoretical analysis and experimental study a self-excited oscillation pulsed jet device[J].Journal of China Coal Society,1989,14(1):90-100(in Chinese)
[9]廖振方,唐川林.自激振荡脉冲射流喷嘴的理论分析[J].重庆大学学报(自然科学版),2002,25(2):24-27Liao Z F,Tang C L.Theory of the self-excited oscillation pulsed jet nozzle[J].Journal of Chongqing University(Natural Science Edition),2002,25(2):24-27(in Chinese)
[10]廖振方,唐川林,张凤华.自激振荡脉冲射流喷嘴的试验研究[J].重庆大学学报(自然科学版),2002,25(2):28-32Liao Z F,Tang C L,Zhang F H.Experiments of the self-excited oscillation pulsed jet nozzle[J].Journal of Chongqing University(Natural Science Edition),2002,25(2):28-32(in Chinese)
[11]李晓红,杨林,王建生,等.自激振荡脉冲射流装置的固有频率特性[J].煤炭学报,2000,25(6):641-644Li X H,Yang L,Wang J S,et al.The natural frequency characteristic of the self-excited oscillation pulsed water jet device[J].Journal of China Coal Society,2000,25(6):641-644(in Chinese)
[12]王健,李江云,关凯.自激脉冲喷嘴装置试验研究[J].工程热物理学报,2014,35(4):678-681Wang J,Li J Y,Guan K.Experimental study of selfexcited pulse jet[J].Journal of Engineering Thermophysics,2014,35(4):678-681(in Chinese)
[13]高传昌,雷霆.自激振荡脉冲射流喷嘴装置系统频率特性理论研究[J].应用力学学报,2010,27(1):33-38Gao C C,Lei T.Frequency characteristics of self-excited oscillation pulsed jet nozzle device[J].Chinese Journal of Applied Mechanics,2010,27(1):33-38(in Chinese)
[14]王乐勤,王循明,徐如良,等.低压大流量自激振荡脉冲射流喷嘴结构参数优化研究[J].流体机械,2004,32(3):7-10,31Wang L Q,Wang X M,Xu R L,et al.Structureparameter optimized study of self-excited oscillation pulsation-jet nozzle in low-press and amount-flux[J].Fluid Machinery,2004,32(3):7-10,31(in Chinese)
[15]周利坤,刘宏昭.用自适应粒子群算法求解自激脉冲喷嘴结构参数模型[J].吉林大学学报(工学版),2012,42(6):1415-1420Zhou L K,Liu H Z.Soving the self-excited pulsed nozzle structural parameters of the model by adaptive particle swarm algorithm[J].Journal of Jilin University(Engineering and Technology Edition),2012,42(6):1415-1420(in Chinese)
[16]王乐勤,王循明,徐如良,等.自激振荡脉冲喷嘴结构参数配比试验研究[J].工程热物理学报,2004,25(6):956-958Wang L Q,Wang X M,Xu R L,et al.Experimental Study on structural parameters optimized design of the self-excited oscillation pulsed jet nozzle[J].Journal of Engineering Thermophysics,2004,25(6):956-958(in Chinese)
[17]裴江红,唐川林,胡东.双腔室自激振荡喷嘴频率特性研究[J].振动与冲击,2011,30(4):29-32Pei J H,Tang C L,Hu D.Self-excited oscillation frequency feature of a pulsed water jet nozzle with double-chamber[J].Journal of Vibration and Shock,2011,30(4):29-32(in Chinese)