| 粒子动态分析仪(PDA)测量湍流场时散射粒子的选择 |
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| 引用本文： | 郭嘉,罗晔.粒子动态分析仪(PDA)测量湍流场时散射粒子的选择[J].激光技术,1995,19(1):38-41. |
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| 作者姓名： | 郭嘉 罗晔 |
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| 作者单位： | 1.华中理工大学, 武汉, 430070 |
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| 摘 要： | 应用激光技术测量流场时需要合适的散射粒子。本文研究了激光三维粒子动态分析仪测量湍流流场时,如何选择合适散射粒子的问题。实验结果表明,散射粒子的合理选择是保证测量精度的重要措施之一。在测量强脉冲湍流场时,应选用密度小,直径小且折射率大的粒子作为散射粒子。选择合适的粒子播散浓度。
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| 关 键 词： | 粒子动态分析仪 湍流 散射粒子 |
| 收稿时间： | 1993-09-30 |
| 修稿时间： | 1994-01-25 |
Selection of scattering particles for measuring turbulent flow field with particle dynamic analyzer |
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| GuoJia,LuoYe.Selection of scattering particles for measuring turbulent flow field with particle dynamic analyzer[J].Laser Technology,1995,19(1):38-41. |
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| Authors: | GuoJia LuoYe |
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| Affiliation: | Huazhong University of Science and Technology |
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| Abstract: | The technique of laser Doppler velocity measurement of flow field de-pends on suitable selection of scattering particles. How to select the suitable scattering particles to measure the flow field with a 3-dimensional particle dynamic analyzer(3D-PDA)has been discussed in this paper.The results show that properties of scatter-ing particles are key factors of effectiilg on the velocity measurement accurate ,Thescattering particles should meet the requirements of the small size. low density,high reflective index and suitable concentration . |
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| Keywords: | particle dynamic analyzer turbulent flow particles scattering |
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