A Light-Scattering System to Measure Cavitation Nuclei: Analysis and Calibration.
Abstract
An investigation is made into the problem of measurement inaccuracies of a Light-Scattering System (LSS) that can be utilized to measure cavitation nuclei in terms of microbubble populations. The principle of the system whereby the magnitude of scattered light from an incident laser beam illuminating a microbubble is correlated with the microbubble size has been developed and demonstrated by A. Keller. However, the goal of this investigation is to increase the reliability of the LSS by minimizing several of the inaccuracies. Modifications to the LSS are proposed to minimize system inaccuracies. One is a dual-detector signal analysis system to facilitate the screening out of solid particulate or non-microbubble nuclei from the total nuclei distribution being measured. The other is a mathematical technique called an inversion scheme used to correct inaccurate nuclei count rates reported by the system due to the Probe volume not having a uniform light intensity distribution. Results are presented from a series of rigorous experiments conducted to test the effectiveness of the proposed modifications. In these experiments, the modified LSS is used to measure many different nuclei distributions in a highly controlled environment with a holography system being used to calibrate the LSS test results.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1982
- Accession Number
- ADA127946
Entities
People
- C. B. Yungkurth
Organizations
- Pennsylvania State University