HELE SHAW APPARATUS PDF

It allows students to study various source and sink arrangements, and look at flow around an unlimited variety of different shaped models. The apparatus can represent water seepage through solids and can simulate any process satisfying the Laplace equation in two dimensions. Thus lecturers can also use it to represent flow in other branches of engineering, such as aerodynamics or electricity and heat flow. The apparatus works with a steady, air-free water supply and suitable drain. The equipment consists of a channel formed between two plates.

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Hele-Shaw flow is defined as Stokes flow between two parallel flat plates separated by an infinitesimally small gap, named after Henry Selby Hele-Shaw , who studied the problem in Approximation to Hele-Shaw flow is specifically important to micro-flows. This is due to manufacturing techniques, which creates shallow planar configurations, and the typically low Reynolds numbers of micro-flows.

The governing equation of Hele-Shaw flows is identical to that of the inviscid potential flow and to the flow of fluid through a porous medium Darcy's law. It thus permits visualization of this kind of flow in two dimensions.

When the gap between plates is asymptotically small. The equation relating the pressure gradient to the velocity is,. This equation is supplemented by the no-penetration boundary conditions on the side walls of the geometry,. The term Hele-Shaw cell is commonly used for cases in which a fluid is injected into the shallow geometry from above or below the geometry, and when the fluid is bounded by another liquid or gas.

From Wikipedia, the free encyclopedia. H Investigation of the nature of surface resistance of water and of stream-line motion under certain experimental conditions. Bibcode : Natur..

New York: McGraw-Hill, Milne-Thomson Theoretical Hydrodynamics. Dover Publications, Inc. Journal of Fluid Mechanics. Categories : Fluid dynamics. Hidden categories: Wikipedia articles needing page number citations from April CS1: Julian—Gregorian uncertainty. Namespaces Article Talk. Views Read Edit View history. Contribute Help Community portal Recent changes Upload file.

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Hele-Shaw Apparatus Fluid Mechanics Experiment Equipment Educational Equipment

A bench-mounting Hele-Shaw apparatus to demonstrate two-dimensional laminar flow around differently shaped models. It allows students to study various source and sink arrangements, and look at flow around an unlimited variety of different shaped models. The apparatus can represent water seepage through solids, and can simulate any process satisfying the Laplace equation in two dimensions. Thus lecturers can also use it to represent flow in other branches of engineering, such as aerodynamics or electricity and heat flow.

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Hele-Shaw flow

It allows students to study various sources and sink arrangements, and to look at an unlimited variety of models. The apparatus can be represented by the two-dimensional Laplace equation in two dimensions. Thus lecturers can also use it to represent in other branches of engineering, such as aerodynamics or electricity and heat flow. The apparatus works with a steady, air-free water supply and suitable drain. The equipment consists of a channel formed between two plates.

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TecQuipment Hele-Shaw Apparatus – H9

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