Pressure, Bernoulli Sum, and Momentum and Energy Relations in a Laminar Zone of Separation
作者:
Enzo O. Macagno,
Tin‐Kan Hung,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1967)
卷期:
Volume 10,
issue 1
页码: 78-82
ISSN:0031-9171
年代: 1967
DOI:10.1063/1.1761998
出版商: AIP
数据来源: AIP
摘要:
The pressure field, the Bernoulli‐sum variation, and the different terms of the impulse‐momentum and work‐energy relations have been determined computationally for a conduit expansion of 2:1 and a Reynolds number of 48 in the narrow part of the conduit. The procedure used was the integration of an explicit discretized form of the Navier‐Stokes equations. The calculations were carried out with an IBM 7044 electronic computer. It was found that some terms of the differential and integrated forms of the basic equations were relatively small. The integrated form of the work‐energy relation can be simplified to only three of its terms. The role of the eddy was found to be essentially that of shaping the main flow, the exchange of momentum and energy with the main flow being rather small.
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