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掺有碘分子的流动流体,在激光的作用下会产生感应的荧光发射,激光感应的碘分子荧光包含有压强的信息,采用成像法,得到的是压强场在一个平面上的分布,因而这一测量是多点测量。作者测量了压强对激光感应的碘分子荧光的影响,去除喇曼散射引起的散射峰,提出了直接利用激光感应的荧光测量流动流体的压强场的非接触测量新方法,还探讨了这一方法的理论和实验方案。
Flowing fluids doped with iodine molecules produce an induced fluorescence emission under the action of a laser. The laser-induced fluorescence of iodine molecules contains information of pressure. Using imaging, the distribution of the pressure field in a plane is obtained, One measurement is multi-point measurement. The authors measured the effect of pressure on the laser-induced fluorescence of iodine molecules and removed the scattering peak caused by Raman scattering. A new non-contact measurement method was proposed to directly measure the pressure field of flowing fluid by using laser-induced fluorescence. The method was also discussed Theory and experimental program.