LAMINAR FLOW TABLE APPARATUS

Product Description

Specification:

LAMINARFLOW TABLE APPARATUS

Laminar Flow Table is an improvedversion of the classical Heel-Shaw apparatus with the addition of sinks andsources. It consists of two closely spaced sheets of laminated glass, arrangedhorizontally on a glass fiber molding. An inlet tank and discharge tank areincorporated in the molding, which is supported on a floor standing, metalframe.

Three adjustable feet enable rapidleveling off the flow table. Eight miniature tapings, which may be used assinks or sources, are arranged about the centre line of the lower glass platein a cruciform configuration. A doublet is located at the centre of thepattern.

A system of pipes, valves andmanifolds enables any combination of the sinks and sources to be used.

A row of control valves mounted abovethe flow table is used to adjust the flow through each individual source. A rowof sink control valves is used to adjust the flow through each individual sink.

A row of hypodermic needles attachedto a manifold is positioned between the glass plates at the inlet edge. Tovisualize the flow of water between the glass plates dye is injected throughthe equally spaced needles. The position of each streamline is clearlyindicated by the dye, which is supplied from a reservoir fitted with a flowcontrol valve.

A black reticule on a whitebackground is printed on the underside of the lower glass plate to aidvisualization of the streamlines.

The patterns created by the potentialflow may be recorded by tracing on the top glass sheet or by photography ifrequired.

A diffuser in the inlet tank and anadjustable weir plate in the discharge tank help to promote a uniform flow ofwater. Valves are incorporated in the base of these tanks to aid draining.

The flow of water is controlled by aninlet flow control valve. A pressure regulator reduces the mains water pressureand helps to minimize variations in flow.

The top glass plate may be raised atthe front edge and retained in this position to enable models to be placed inthe working section. A set of models are supplied for basic flow studies. Thesemodels are manufactured from plastic sheet and are trapped in the requiredposition when the top glass plate is lowered.

Alternative models can be fabricatedfrom any convenient material and used to investigate the associated flowpatterns. Two-dimensional laminar flow is created between the two glass platesby the combination of low fluid velocity and the narrow gap between the plates