| Autor: |
Filip Grapow, Grzegorz Liśkiewicz, Władysław Kryłłowicz |
| Rok vydání: |
2022 |
| Zdroj: |
Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery. |
| DOI: |
10.1115/gt2022-83036 |
| Popis: |
This paper presents the universal method of assessing the Vaneless Diffuser Rotating Stall (VDRS) cells’ size with the use of the Particle Image Velocimetry (PIV) technique. Two different cell dimensions’ definitions were introduced: Radial Cell Size (RCS) and Circumferential Cell Size (CCS). The step-by-step instructions for the calculation of both cell sizes are provided. Also, potential issues that readers may encounter while calculating the VDRS cell’s size are presented followed by examples of their solutions. The presented method for cell size assessment is universal and can be used not only with PIV measurements but with any technique allowing flow field reconstruction inside the diffuser or in numerical research. Such an analysis provides information regarding the most crucial zones inside the diffuser for anti-VDRS systems. Based on the results it is possible to increase the efficiency and applicability of the already developed and future VDRS prevention systems. Additionally, this method allows further understanding of the VDRS development by means of the cell growth study. Results of such an analysis may be used to improve compressor design resulting in better performance and wider operation range. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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