Geometric quasi-similarity: Case of nozzles with quadrant-shaped inlet

0461715 - ÚT 2017 RIV NL eng J - Journal Article
Tesař, Václav
Geometric quasi-similarity: Case of nozzles with quadrant-shaped inlet.
Sensors and Actuators A - Physical. Roč. 248, September (2016), s. 246-256. ISSN 0924-4247. E-ISSN 1873-3069
R&D Projects: GA ČR GA13-23046S
Institutional support: RVO:61388998
Keywords : nozzles * local geometric similarity * quasi-similarity * reynolds number * euler number * quadrant nozzles
Subject RIV: BK - Fluid Dynamics
Impact factor: 2.499, year: 2016
https://www.sciencedirect.com/science/article/pii/S0924424716303399

Geometric similarity (i.e. difference only in size scale) is generally believed to be unavoidable condition without which it is impossible to apply the Buckingham p−theorem to two mutually related flowfields. Recently introduced idea of secondary invariants can by-pass this limitation and accept geometric quasi-similarity— i.e. cases with different values of ratios of geometric parameters. In this paper this new approach is demonstrated on an example case of a single-parameter family of nozzles which are mutually not fully geometrically similar.
Permanent Link: http://hdl.handle.net/11104/0261553