Boundary layer similar parameter simulation method for accurately predicting acoustic load of cavity flow
A technology with similar parameters and simulation methods, applied in the field of cross research, it can solve the problems of large error of cavity flow and acoustic load data, low accuracy, and difficulty in establishing simulation methods, so as to improve the simulation ability and improve the research efficiency.
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[0033] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0034]Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0035] In this example Figure 2-Figure 5 , where the abscissa X / L represents the relative position in the cavity, CP is the static pressure coefficient, and SPL is the sound pressure level (in dB).
[0036] This embodiment is implemented through the following processes:
[0037] 1. Extraction of characteristic parameters of incoming flow boundary layer
[0038] Since the thickness of the incoming flow boundary layer and the shape factor of ...
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