Tracts on HydraulicsThomas Tredgold M. Taylor, 1836 - 219 sider |
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Side vi
... Reservoir be con- tracted , according to the Form of the con- tracted Vein of Fluid , which issues through a Hole of the same Diameter in a thin Plate , the Expenditure will be the same as if the Tube were not contracted at all PROP ...
... Reservoir be con- tracted , according to the Form of the con- tracted Vein of Fluid , which issues through a Hole of the same Diameter in a thin Plate , the Expenditure will be the same as if the Tube were not contracted at all PROP ...
Side vii
... Reservoir , which flows through a horizontal Aperture , be influenced by any foreign Motion , it will form a hollow ... Reservoirs , and of the Contraction of the Stream .... 187 191 CHAP . II . Of the Discharge of Water by CONTENTS . vii.
... Reservoir , which flows through a horizontal Aperture , be influenced by any foreign Motion , it will form a hollow ... Reservoirs , and of the Contraction of the Stream .... 187 191 CHAP . II . Of the Discharge of Water by CONTENTS . vii.
Side viii
... Reservoir , extending to the Surface . 194 CHAP . IV . Of the Discharge from Reservoirs with lateral Orifices of considerable Magnitude , with a constant Head of Water 196 CHAP . V. Of the Discharge from Reservoirs receiving no Sup- ply ...
... Reservoir , extending to the Surface . 194 CHAP . IV . Of the Discharge from Reservoirs with lateral Orifices of considerable Magnitude , with a constant Head of Water 196 CHAP . V. Of the Discharge from Reservoirs receiving no Sup- ply ...
Side 11
... reservoir ; and is proved by the rising of jets to the height of their reservoirs nearly . The effective head differs from the real head by the velocity lost by the fluid in issuing through the sluice aperture , and the friction of the ...
... reservoir ; and is proved by the rising of jets to the height of their reservoirs nearly . The effective head differs from the real head by the velocity lost by the fluid in issuing through the sluice aperture , and the friction of the ...
Side 34
... reservoirs nearly . † Gravity , it is true , acts a longer space of time upon the body that descends slow than upon that which falls quick ; but this cannot occasion the difference in the effect for an elastic body falling through the ...
... reservoirs nearly . † Gravity , it is true , acts a longer space of time upon the body that descends slow than upon that which falls quick ; but this cannot occasion the difference in the effect for an elastic body falling through the ...
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Tracts on Hydraulics: 1. Smeaton's Experimental Papers on the Power of Water ... Thomas Tredgold Uten tilgangsbegrensning - 1836 |
Vanlige uttrykk og setninger
angle aperture appears applied axis Bossut buckets Canal centre centre of gravity centrifugal force circumference collision column communication of motion conical tube consequently contracted vein cylindrical tube deductions descending discharge distance ditto double Dutch sails eddies enlarged sails equal expenditure extremity fall fluid force four cubic feet friction given gravity greater greatest half height Hence horizontal hydraulic impelling power impulse inches increase JOHN SMEATON lateral communication length less lines in diameter load machine Maxim maximum mechanic power mill minute move nearly non-elastic soft bodies number of turns observed orifice overshot wheel particles perpendicular pipe plane plane sails pressure produced proportion proposition quantity of water radius ratio reservoir resistance river River Thames scale set of experiments side square root stream striking body suppose surface theory thin plate undershot velocity vessel vibrations watermills whole wind
Populære avsnitt
Side 39 - However, as every thing has its limits, so has this: for thus much is desirable, that the water shall have somewhat greater velocity, than the circumference of the wheel, in coming thereon ; otherwise the wheel will not only be retarded by the buckets striking the water, but thereby dashing a part of it over, so much of the power is lost.
Side 61 - ... 2. The load at the maximum is nearly but somewhat less than, as the square of the velocity of the wind, the shape and position of the sails being the same.
Side 45 - ... which is equal to the difference of level between the surface of the water in the...
Side 34 - ... inches, and there impinging upon another body, would be capable of producing an equal effect by collision, as if the same cubic inch had descended through the same space with a slower motion, and produced its effects gradually ; for, in both cases, gravity acts upon an equal quantity of matter, through an equal space...
Side 41 - Experience confirms that this velocity of 3 feet in a second is applicable to the highest overshot wheels as well as the lowest ; and all other parts of the work being properly adapted thereto, will produce very nearly the greatest effect possible. However, this also is certain, from experience, that high wheels may deviate farther from this rule, before they will lose their power, by a given aliquot part of the whole, than low ones can be admitted to do : for a wheel of 24 feet high may move at...
Side 67 - The effects of sails of similar figure and position are as the square of the radius. 9. The velocity of the extremities of Dutch sails, as well as of the enlarged sails, in all their usual positions when unloaded, or even loaded to a maximum, is considerably greater than that of the wind.
Side 57 - a broader sail requires a greater angle ; and that when the sail is broader at the extremity, than near the centre, this shape is more advantageous than that of a parallelogram.* Many have imagined, that the more sail the greater the advantage, and have therefore proposed to fill up the whole area: and hy making each sail a sector of an ellipsis, according to M.
Side 76 - ... with that of a vertical one, it is manifest that the power of a vertical mill will be four times as great as that of an horizontal one, let the number of vanes be what they will. This disadvantage arises from the nature of the thing...