Where are V notches used?
A v notch weir is simply a ‘v notch’ in a plate that is placed so that it obstructs an open channel flow, causing the water to flow over the v notch. It is used to meter flow of water in the channel, by measuring the head of water over the v notch crest.
What are the applications using these notches?
The applications of notch include tanks, reservoirs, or any water storage devices that have a passage for water escape. Similarly, a weir is a notch on a large scale used to measure flows of rivers and canals. Apart from measuring, notch and weir are also used to regulate the discharge of small and large channels.
What are the applications using rectangular notch and vee notch?
Rectangular notches and Triangular notches are often used in water supply, wastewater and sewage systems. They consist of a sharp edged plate with a rectangular, triangular or v-notch profile for the water flow.
What is notch V notch?
What is a V notch weir? V notch weirs really are just that – a thin plate weir with a ‘V’ notch cut into it. The weir is placed to obstruct open channel flow and allow water to flow over the notch. This enables us to accurately measure the flow, by measuring the head upstream of the V notch.
What is V notch display?
A notch is essentially a cut-out, at the top, of a part of the screen display. Its advantage: It offers the ability to retain the display space on either side of it, for information such as date, battery statistics and more, and for apps.
What are the advantages of using triangular notch or weir over rectangular one?
A triangular notch gives much more accurate results in low discharge conditions, as compared to the conventional rectangular notch. Also, only one reading (the head) is required to calculate the discharge rate, making calculations much easier. However, it cannot handle large volumes of flow rate accurately.
What are the limitations of V-notch?
In V-notch, advantage is of head over the crest is large and thus flow remains un-affected by surface tension and viscosity. Limitation of V-Notch is small discharge range and V-plate itself become obstruction to silt and hence not suitable for field channels in irrigation and for waste water management.
What is difference between V notch and weir?
Basically there is no difference between a notch and a weir, except that a notch is of small size while a weir is of large size. A notch is usually made of metal plate whereas a weir is made of masonry or concrete. The bottom edge over which the water flows is called the sill or the crest of water the notch.