Swirl flow studies in diffusers using the flux analysis method with orthogonal curvilinear coordinates
✍ Scribed by S. Uchida; Y. Nakamura; T. Kondo
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 721 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0029-5981
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✦ Synopsis
Abstract
A computational method of flux analysis is applied to the study of the swirling flow of different regimes through a diffuser pipe. The flux analysis method is an iterative procedure to construct a system of orthogonal curvilinear co‐ordinates consisting of stream‐surface and normals following the flow. Examples of the inviscid swirling flow of an incompressible fluid are calculated, and deformations of vortices in a diffuser pipe are studied. For a simple vortex with rigid rotation the deceleration of flow is remarkable on the axis, where the total energy has the lowest level. For a Burgers type vortex, provided the circulation number exceeds a critical value, the rate of deceleration of flow along the axis become more pronounced for only a slight increase of swirl strength, and ultimately a stagnation point appears on the axis. The present method, however, may not be applied to the flow with stagnation point.