Topic
Hele-Shaw flow
About: Hele-Shaw flow is a research topic. Over the lifetime, 5451 publications have been published within this topic receiving 151320 citations.
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TL;DR: In this paper, the Hele-Shaw approximations are used to simplify the general flow equations which are then solved over the irregularly shaped flow domain using a numerically generated grid.
57 citations
TL;DR: In this article, a simplified model of the flow plate and adjacent diffusion layer of a PEM fuel cell has been numerically studied by writing the governing equations in dimensionless form and solving the resultant equations using a commercial software package.
57 citations
01 Sep 1982
TL;DR: The role of large scale wavelike structures as the major mechanism for supersonic jet noise emission is examined in this article with the use of aerodynamic and acoustic data for low Reynolds number.
Abstract: The role of large scale wavelike structures as the major mechanism for supersonic jet noise emission is examined With the use of aerodynamic and acoustic data for low Reynolds number, supersonic jets at and below 70 thousand comparisons are made with flow fluctuation and acoustic measurements in high Reynolds number, supersonic jets These comparisons show that a similar physical mechanism governs the generation of sound emitted in he principal noise direction These experimental data are further compared with a linear instability theory whose prediction for the axial location of peak wave amplitude agrees satisfactorily with measured phased averaged flow fluctuation data in the low Reynolds number jets The agreement between theory and experiment in the high Reynolds number flow differs as to the axial location for peak flow fluctuations and predicts an apparent origin for sound emission far upstream of the measured acoustic data
57 citations
TL;DR: In this paper, it was shown that the Goldstein singularity generated in the classical boundary-layer approach to separation is removable in a physically sensible fashion by means of a sequence of local double structures, the last of which arises just beyond separation owing to the occurrence of a further singularity which describes the necessary complete breakaway of the viscous layer from the wall.
Abstract: It is shown that, in the flow of a viscous wall layer past a relatively steep obstacle at the wall, the Goldstein (1948) singularity generated in the classical boundary-layer approach to separation is removable in a physically sensible fashion. The removal is effected by means of a sequence of local double structures, the last of which arises just beyond separation owing to the occurrence of a further singularity which is also removable and describes the necessary complete breakaway of the viscous layer from the wall. The novel forms of the local pressure–displacement relations are the key elements allowing the solution to retain physical reality throughout. Beyond the breakaway the reattachment process takes place only at a relatively large distance downstream, before the motion returns to its original uniform shear form. The present flow configuration, the first we know of where Goldstein's singularity proves to be removable, has important applications in both internal and external flows at high Reynolds numbers and these are also discussed.
57 citations
TL;DR: In this paper, the effects of Reynolds number and rod spacing were investigated for the determination of velocity distribution and flow resistance for fully developed turbulent flow parallel to a triangular array of rods.
57 citations