ID 60

Evaluation of Research Simplex Atomizers as a Measurement Standard

 

Abstract:

Cold-flow spray researchers have an array of diagnostic tools to extract meaningful information on spray characteristics. The efficacy of many of these tools, however, depends heavily on calibration, alignment, and human operation. This can lead to large discrepancies in data values for seemingly identical setups between workers. The application of experimental data to numerical models is thereby hindered due to inconsistencies in results caused by experimental error. Previously, an attempt was made to produce a “standard spray” through the use of a research simplex atomizer (RSA). As manufacturing processes and diagnostic tools have improved, the research simplex atomizer is being revisited. Here, a new research simplex atomizer has been investigated. Comparison is made with the previous generation atomizer to determine if legacy datasets are relevant to the current atomizer design. Fundamental datasets captured from detailed test conditions are also presented to provide benchmark data. Further, emphasis is placed on the sensitivity of laser diagnostics used and the effect their operation can incur.