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Experimental Study of Bell-Mouth Intakes on Discharge Coefficient
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TLDR
In this article, a comprehensive set of experiments have been carried out using four different mouth-shapes of a vertical intake, and the results showed that with reducing the radius of curvature of the intake, the coefficient of discharge rate increased.Abstract:
The strong vortices at the mouth of an intake reduce the discharge efficiency. One of the solutions for controlling the vortex is the use of bell-mouth intakes. Since only general guidance for use of bell-mouth intakes is available a study for the more shapes of mouth of intake is needed. Hence, a comprehensive set of experiments have been carried out using 4 different mouth-shapes of a vertical intake. The results showed that with reducing the radius of curvature of bell-mouth intake, the coefficient of discharge rate increased, and maximum discharge coefficient with four different mouth shape of intake with the radius of curvature of 2d was created.read more
Citations
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Designs for high flow natural convection solar air heaters
TL;DR: In this article, the authors reported that the integration of bell-shaped designs at the inlet of SAH adds to the ram-air effect that converts dynamic pressure into static pressure thereby manifesting into an excellent enhancement of air flow rate as well as in heat transfer associated with less hydraulic losses.
Journal ArticleDOI
Discharge characteristics of lateral circular intakes in open channel flow
TL;DR: In this article, an analytical and experimental study for flow through lateral circular intakes with and without bellmouth in open channels is presented, which indicates that the coefficient of discharge for the lateral intake under uniform flow is dependent on the Froude number of the approach flow in the main channel and the ratio of width of the orifice to the width of a main channel.
Journal ArticleDOI
Natural convection solar air heater: Bell-mouth integrated converging channel for high flow applications
TL;DR: In this article, two new designs of SAH were numerically analyzed: (a) taper flow passage for better thermal performance; (b) tapered designs incorporated with bellmouth inlet opening for improved hydraulic performance.
Journal ArticleDOI
A 3D Study of an Air-Core Vortex Using HSPIV and Flow Visualization
TL;DR: In this paper, a steady air-core vortex over a bottom intake was created in a wide recirculating flume, in which the water depth, mean velocity of the approach flow and intake discharge could be adjusted.
An Experimental Study of the Performance of an Ogee-Shaped Vertical Intake: Geometrical Parameters of Cross-Vane Vortex Inhibitor
Vadoud Naderi,Susan Gaskin +1 more
TL;DR: In this paper, the effect of cross-vane vortex inhibitors on the critical submergence of the intake shape and geometrical parameters (length, height, mesh solidity and perforation diameter) of a vertical pipe intake was studied.
References
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Journal ArticleDOI
Free‐Surface Air Core Vortex
TL;DR: In this article, a Rankine vortex model is used as the basis for an equation for critical submergence of intakes, which accounts for the effect of eddy viscosity on vortex-core characteristics.
Journal ArticleDOI
Vortex formation at vertical pipe intakes
TL;DR: In this paper, experimental studies on vortex formation at pipe intakes were carried out using two geometrically similar circular vortex tanks, circulation in approach flow was generated by means of adjustable guide vanes Transparent pipe intakes of different sizes and liquids of different viscosities and surface tensions were used in a recirculating system.
Journal ArticleDOI
Similarity Of Free-Vortex At Horizontal Intake
TL;DR: In this article, the onset of air-entraining vortices at a horizontal intake, with and without a bellmouthed entry, when the intake was projected into the experimental flume or mounted flush with the side wall was investigated.
Journal ArticleDOI
Scale Effects in Pump Sump Models
TL;DR: In this paper, scale effects on free surface vortexing and pipe flow swirl and inlet losses were examined using a model of a pump sump to determine whether scale effects distort the predictive ability of hydraulic models of pump sumps.
Journal ArticleDOI
Similitude in Free-Surface Vortex Formations
TL;DR: In this paper, the effects of fluid viscosity and surface tension on the incipient conditions for vortex formation and on vortex size and shape were investigated in two different sizes of cylindrical tanks with adjustable vanes at the perimetry.
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