Method for establishing flow surface axis curve coordinate system for describing complex fluid motion of turbomachinery

The invention relates to a method for establishing a flow surface axis curve coordinate system for describing complex fluid motion of a turbomachine, which is characterized in that through the coordinate system, the complex flow in the turbomachine is decomposed into two secondary flow motions of ma...

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Bibliographische Detailangaben
Hauptverfasser: DUAN RUI, WANG JUN, JI GUORUI, TIAN XIMIN, CAI YOULIN, YAN CHUANXU
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention relates to a method for establishing a flow surface axis curve coordinate system for describing complex fluid motion of a turbomachine, which is characterized in that through the coordinate system, the complex flow in the turbomachine is decomposed into two secondary flow motions of main flow motion for realizing energy conversion and energy loss. And meanwhile, by decomposing each acting force borne by the fluid micelles in the turbomachinery into a, b and c three-axis directions and establishing a relationship between the force and the secondary flow, a secondary flow generation mechanism is revealed, direct solution of a secondary flow field and direct calculation of secondary flow energy loss are realized, and the current situation of indirectly describing the secondary flow at present is changed. Complete decomposition of complex flow is achieved, secondary flow is extracted, and the method can be widely applied to various turbomachinery including but not limited to pumps, water turbines, d