两相流作用下旋转三角形排列管束流弹失稳振动特性实验研究
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摘要
在空气-水两相流实验装置上对节径比为1.48的旋转三角形排列的传热管束进行了两相流作用下的流弹失稳振动特性实验,分别对传热管的升力方向和阻力方向进行测量,研究了传热管束在空泡份额为0,20%,40%,60%,80%和90%下漩涡脱落情况以及发生流弹失稳的临界流速。结果表明:阻力方向没有发生失稳现象;对于同种频率的传热管束,临界流速随着空泡份额的增加而增大;在同一空泡份额下,临界流速与传热管频率成正比;空泡份额低于20%时,传热管束会出现漩涡脱落。
Vibration characteristic experiments of fluidelastic instability on the air-water two-phase test device are conducted about rotated triangular tube array with the pitch-to-diameter ratio of 1.48 subjected to air-water cross-flow.Both of lift direction and draft direction of tube bundles are tested.Critical velocities of two different frequency tube bundles for fluidelastic instability are measured in different void fractions of 0,20%,40%,60%,80%and 90%.The results show that,fluidelastic instability does not occur in draft direction.The critical velocity increases with the increase of void fraction for tube bundle with the same frequency,and is proportional to tube frequency for the same void fraction.When void fraction is less than 20%,vortex shedding occurs in the heat transfer tube bundle.
Vibration characteristic experiments of fluidelastic instability on the air-water two-phase test device are conducted about rotated triangular tube array with the pitch-to-diameter ratio of 1.48 subjected to air-water cross-flow.Both of lift direction and draft direction of tube bundles are tested.Critical velocities of two different frequency tube bundles for fluidelastic instability are measured in different void fractions of 0,20%,40%,60%,80%and 90%.The results show that,fluidelastic instability does not occur in draft direction.The critical velocity increases with the increase of void fraction for tube bundle with the same frequency,and is proportional to tube frequency for the same void fraction.When void fraction is less than 20%,vortex shedding occurs in the heat transfer tube bundle.
引文
[1]Pettigrew M J,Taylor C E,Janzen V P,et al.Vibration behavior of rotated triangular tube bundles in twophase cross-flow[J].Journal of Pressure Vessel Technology,2003,124:144-153.
[2]Pettigrew M J,Zhang C,Mureithi N W,et al.Detailed flow and force measurements in a rotated triangular tube bundle subjected to two-phase cross-flow[J].Journal of Fluids and Structures,2005,20:567-575.
[3]Zhang C,Pettigrew M J,Mureithi N W.Further study of quasiperiodic vibration excitation forces in rotated triangular tube bundles subjected to two-phase cross flow[J].Journal of Pressure Vessel Technology,2009,131:031303.
[4]Ricciardi G,Pettigrew M J,Mureithi N W.Fluidelastic instability in a normal triangular tube bundle subjected to air-water cross-flow[J].Journal of Pressure Vessel Technology,2011,133:061301.
[5]Chung Heung June,Chu In-Cheol.Fluid-elastic instability of rotated square tube array in an air-water twophase cross-flow[J].Nuclear Engineering and Technology,2006,38:69-80.
[6]Chu In-Cheol,Chung Heung June,Lee Seungtae.Flow-induced vibration of nuclear steam generator U-tubes in two-phase flow[J].Nuclear Engineering and Design,2011,241:1508-1515.
[7]Nakamura T,Fujita K,Kawanishi K.Study on the vibrational characteristics of a tube array caused by twophase flow.Part II:Fluidelastic vibration[J].Journal of Fluids and Structures,1995,9:539-562.
[8]Sawadogo T,Mureithi N.Fluidelastic instability study in a rotated triangular tube array subject to two-phase cross-flow.Part I:Fluid force measurements and time delay extraction[J].Journal of Fluids and Structures,2014,49:1-15.
[9]Sawadogo T,Mureithi N.Fluidelastic instability study on a rotated triangular tube array subject to two-phase cross-flow.Part II:Experimental tests and comparison with theoretical results[J].Journal of Fluids and Structures,2014,49:16-28.
[10]聂清德,张明贤,郭宝玉,等.管束的流体弹性不稳定性的研究[J].振动工程学报,1993,6(2):107-117.Nie Qingde,Zhang Mingxian,Guo Baoyu,et al.Study of fluidelastic instability in tube bundles[J].Journal of Vibration Engineering,1993,6(2):107-117.
[11]张明贤,聂清德,侯曾炎,等.换热器管束流体弹性不稳定性的预测[J].石油工业设备,1994,23(4):3-7.Zhang Mingxian,Nie Qingde,Hou Zengyan,et al.Estimate the fluidelastic instability of heat exchanger tube bundles[J].Petro Chemical Equipment,1994,23(4):3-7.
[12]聂清德,郭宝玉,丁学仁,等.换热器管束中的流体弹性不稳定性[J].力学学报,1996,28(2):151-158.Nie Qingde,Guo Baoyu,Ding Xueren,et al.Fluidelastic instability in tube arrays of heat exchangers[J].Acta Mechanica Sinica,1996,28(2):151-158.
[13]Taylor C E,Currie I G,Pettigrew M J,et al.Vibration of tube bundles in two-phase cross-flow:part3-turbulence-induced excitation[J].Trans.ASME J.Pressure Vessel Technology,1989,111:488-500.
[14]Feenstra P A,Weaver D S,Nakammura T.Vortex shedding and fluidelastic instability in a normal square tube array excited by two-phase cross-flow[J].Fluids and Structures,2003,17:793-811.
[15]Pettigrew M J,Taylor C E.Vibration analysis of shelland-tube heat exchangers:an overview-Part 2:vibration response,fretting-wear,guidelines[J].Journal of Fluids and Structures,2003,18(5):485-500.
[2]Pettigrew M J,Zhang C,Mureithi N W,et al.Detailed flow and force measurements in a rotated triangular tube bundle subjected to two-phase cross-flow[J].Journal of Fluids and Structures,2005,20:567-575.
[3]Zhang C,Pettigrew M J,Mureithi N W.Further study of quasiperiodic vibration excitation forces in rotated triangular tube bundles subjected to two-phase cross flow[J].Journal of Pressure Vessel Technology,2009,131:031303.
[4]Ricciardi G,Pettigrew M J,Mureithi N W.Fluidelastic instability in a normal triangular tube bundle subjected to air-water cross-flow[J].Journal of Pressure Vessel Technology,2011,133:061301.
[5]Chung Heung June,Chu In-Cheol.Fluid-elastic instability of rotated square tube array in an air-water twophase cross-flow[J].Nuclear Engineering and Technology,2006,38:69-80.
[6]Chu In-Cheol,Chung Heung June,Lee Seungtae.Flow-induced vibration of nuclear steam generator U-tubes in two-phase flow[J].Nuclear Engineering and Design,2011,241:1508-1515.
[7]Nakamura T,Fujita K,Kawanishi K.Study on the vibrational characteristics of a tube array caused by twophase flow.Part II:Fluidelastic vibration[J].Journal of Fluids and Structures,1995,9:539-562.
[8]Sawadogo T,Mureithi N.Fluidelastic instability study in a rotated triangular tube array subject to two-phase cross-flow.Part I:Fluid force measurements and time delay extraction[J].Journal of Fluids and Structures,2014,49:1-15.
[9]Sawadogo T,Mureithi N.Fluidelastic instability study on a rotated triangular tube array subject to two-phase cross-flow.Part II:Experimental tests and comparison with theoretical results[J].Journal of Fluids and Structures,2014,49:16-28.
[10]聂清德,张明贤,郭宝玉,等.管束的流体弹性不稳定性的研究[J].振动工程学报,1993,6(2):107-117.Nie Qingde,Zhang Mingxian,Guo Baoyu,et al.Study of fluidelastic instability in tube bundles[J].Journal of Vibration Engineering,1993,6(2):107-117.
[11]张明贤,聂清德,侯曾炎,等.换热器管束流体弹性不稳定性的预测[J].石油工业设备,1994,23(4):3-7.Zhang Mingxian,Nie Qingde,Hou Zengyan,et al.Estimate the fluidelastic instability of heat exchanger tube bundles[J].Petro Chemical Equipment,1994,23(4):3-7.
[12]聂清德,郭宝玉,丁学仁,等.换热器管束中的流体弹性不稳定性[J].力学学报,1996,28(2):151-158.Nie Qingde,Guo Baoyu,Ding Xueren,et al.Fluidelastic instability in tube arrays of heat exchangers[J].Acta Mechanica Sinica,1996,28(2):151-158.
[13]Taylor C E,Currie I G,Pettigrew M J,et al.Vibration of tube bundles in two-phase cross-flow:part3-turbulence-induced excitation[J].Trans.ASME J.Pressure Vessel Technology,1989,111:488-500.
[14]Feenstra P A,Weaver D S,Nakammura T.Vortex shedding and fluidelastic instability in a normal square tube array excited by two-phase cross-flow[J].Fluids and Structures,2003,17:793-811.
[15]Pettigrew M J,Taylor C E.Vibration analysis of shelland-tube heat exchangers:an overview-Part 2:vibration response,fretting-wear,guidelines[J].Journal of Fluids and Structures,2003,18(5):485-500.