5/2 power parabola-shaped open channel and waterpower optimum section thereof

A parabola-shaped, optimal section technology, applied in the field of water delivery channels, can solve problems such as easy to cause channel slopes and landslides, difficult construction, and affecting flow capacity

Active Publication Date: 2018-04-24
UNIV OF JINAN
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  • Abstract
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  • Application Information

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Problems solved by technology

However, in the case of the same width and depth, the bottom of the square parabola and semi-cubic parabola section is sharper, which still affects the flow capacity
However, the slope of the three-pa

Method used

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  • 5/2 power parabola-shaped open channel and waterpower optimum section thereof
  • 5/2 power parabola-shaped open channel and waterpower optimum section thereof
  • 5/2 power parabola-shaped open channel and waterpower optimum section thereof

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Embodiment Construction

[0127] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the...

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Abstract

The invention discloses a 5/2 power parabola-shaped open channel. A channel section shape of the open channel is a 5/2 power parabola shape and the opening of the open channel is upwards; a curve expression of a section of the 5/2 power parabola-shaped open channel is a formula (as shown in the specification), wherein the shape coefficient a is a formula (as shown in the specification), h is a water depth and B is a water surface width; an area of a water-carrying section of the channel is a formula (as shown in the specification); a wetted perimeter of the channel is a formula (as shown in the specification); and an optimum width to depth ratio of an optimum section of the open channel is a formula (as shown in the specification), wherein the shape coefficient a is a formula (as shown inthe specification), the normal water depth h is a formula (as shown in the specification), the critical water depth hc is a formula (as shown in the specification), the open area A is equal to 1.4916h2 and the wetted perimeter P is equal to 3.09633h. The 5/2 power parabola-shaped open channel is not only capable of improving the hydraulic characteristics of parabola-shaped sections, but also capable of improving the water carrying capacity.

Description

technical field [0001] The invention relates to a water conveyance channel, specifically a five-fifth power parabolic open channel and its optimal hydraulic section, belonging to the technical field of planning and design of water conveyance channels in irrigation areas. Background technique [0002] The water delivery section of the channel has a great influence on the flow capacity, water depth and construction cost of the channel. Common channel water delivery sections are trapezoidal and rectangular sections. With the improvement of channel construction technology and the application of large lining machines, the construction of curved sections is becoming easier and more popular. For example, the High Level Canal in Pakistan and the Genil-Cabra Canal in Spain [1] all adopt a square parabolic section. Scholars generally believe that the curved section has these advantages [2-4]: there are no or few corner points in the curved channel section, and there are few stress c...

Claims

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Application Information

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IPC IPC(8): G06F17/50E02B5/00E02B13/00
CPCE02B5/00E02B13/00G06F30/13G06F30/20
Inventor 韩延成
Owner UNIV OF JINAN
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