What is the use of triangular notch?
The triangular-notch, thin-plate weir is a convenient, inexpensive, and relatively precise flow-measuring instrument. It is frequently used to measure the flow of water in laboratories and in small, natural streams.
What is triangular notch?
A triangular notch is also called a V-notch. Consider a triangular notch, in one side of the tank, over which water is flowing as shown in figure. Let, H = Height of the liquid above the apex of the notch. θ = Angle of the notch.
What is notch apparatus?
Notch Apparatus is designed for the study of flow measurement in open channels using notches & calibration of notches. The set-up consists of an Open Flow Channel, rectangular in cross-section. Water enters from one end of the channel & at the other end, a notch is fitted.
Why is triangular notch preferred?
A triangular notch or weir is preferred to a rectangular weir or notch due to the following reasons: The expression for discharge for a right-angled V-notch or weir is very simple. For measuring the low discharge, a triangular notch gives more accurate results than a rectangular.
What are the advantages of triangular notch over rectangular notch?
Triangular notch will provide more precise results during measuring low discharge as compare to result obtained from rectangular notch. Only one reading of H will be required for determination of discharge in case of triangular notch.
What is a notch in measurement?
A notch is generally meant to measure the flow of water from a tank. A weir is also a notch but it is made on a large scale. The weir is a notch cut in a dam to discharge the surplus quantity of water. Water flows over a notch or weir while water passes through an orifice.
What is the difference between rectangular notch and triangular notch?
Answer. Answer: A triangular notch is also called a V- notch. A triangular notch gives more accurate results for low discharges than rectangular notch and the same triangular notch can measure a wide range of flow.
Which of the following is not a way of classifying based on the shape of opening?
Which of the following is not a way of classifying based on the shape of opening? Explanation: Circular notch is not a way of classifying based on the shape of opening.
Why is triangular notch better than rectangular notch?
What are the advantages of triangular notches over rectangular notches?
Which type of notch is more advantageous?
Advantages of Triangular Notch(V-notch) over Rectangular Notch : For measurement of discharge in V-notch only one reading i.e. head(H) is required. For low discharge V-notch gives greater head than rectangular notch. Hence, accuracy is more for V-notch.
Why V notch is used?
It is used to meter flow of water in the channel, by measuring the head of water over the v notch crest. The v notch weir is especially good for measuring a low flow rate, because the flow area decreases rapidly as the head over the v notch gets small.