Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Effect of magnetic field on single-bubble in water

Mo Run-Yang Wu Lin-Yan Zhan Si-Nan Zhang Yin-Hong

Effect of magnetic field on single-bubble in water

Mo Run-Yang, Wu Lin-Yan, Zhan Si-Nan, Zhang Yin-Hong
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  1378
  • PDF Downloads:  3958
  • Cited By: 0
Publishing process
  • Received Date:  22 October 2014
  • Accepted Date:  17 December 2014
  • Published Online:  05 June 2015

Effect of magnetic field on single-bubble in water

  • 1. Shaanxi Key Laboratory of Ultrasonic, College of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 11274216).

Abstract: In this paper, we extend the Rayleigh-Plesset model by considering the effect of a magnetic field on the nonlinear response of an oscillating spherical air bubble in water. Water molecules in motion, derived by a time varying ultrasound pressure field, suffer a torque from the magnetic field by Lorentz force. The rotational energy and the translational energy together constitute the kinetic energy of the water molecule. The work done by the pressure during the contraction and expansion of bubble is equal to the total kinetic energy of the water molecule in liquid. According to energy conservation, we establish a modified control equation of the bubble motion under the action of an applied external magnetic field. The integration of the nonlinear differential equation governing the bubble motion is performed analytically by using a regular expansion, and is solved numerically by using a fourth-order Runge-Kutta method. It is shown that the variation of ambient pressure changes the bubble dynamics when the magnetic field is off. The ambient pressure is increased due to the effect of external magnetic field. The pressure induced by magnetic field increases linearly with the increase of magnetic field intensity and the coefficient is about 103 times. The bubble expansion rate, maximum radius, and the velocity of the collapsing bubble decrease as the magnetic field increases. It is predicted that the applying of a magnetic field can widen the pressure range and modify bubble dynamics.

Reference (18)

Catalog

    /

    返回文章
    返回