What is discharge velocity?

What is discharge velocity?

Discharge velocity is the volume of water flowing in unit time across the unit cross section perpendicular to the direction of flow. Discharge velocity is used in darcy’s expression of flow of water under head difference. seepage velocity is the real velocity of water through the soil.

How is discharge rate calculated?

The flow rate of a stream is equal to the flow velocity (speed) multiplied by the cross-sectional area of the flow. The equation Q=AV (Q=discharge rate, A=area, V=velocity) is sometimes known as the discharge equation.

What is the relation between discharge and velocity?

The relationship between the discharge in the stream at a given cross-section and the level of the stream is described by a rating curve. Average velocities and the cross-sectional area of the stream are measured for a given stream level. The velocity and the area give the discharge for that level.

How can we calculate discharge by area velocity method?

Discharge, or the volume of water flowing in a stream over a set interval of time, can be determined with the equation: Q = AV, where Q is discharge (volume/unit time-e.g. m3/second, also called cumecs), A is the cross-sectional area of the stream (e.g. m2), and V is the average velocity (e.g. m/s).

What do you mean by discharge flow rate?

Discharge (also called flow rate) The amount of fluid passing a section of a stream in unit time is called the discharge. If v is the mean velocity and A is the cross sectional area, the discharge Q is defined by Q = Av which is known as volume flow rate.

What is discharge measurement?

The discharge measurement. Discharge is the volume of water moving down a stream or river per unit of time, commonly expressed in cubic feet per second or gallons per day.

What is discharge rate?

The discharge rate is defined as the steady current in amperes (A) that can be taken from a battery of defined capacity (Ah) over a defined period (h). Batteries for CEGB power stations are normally specified for a 10-hour rate.

Why discharge velocity is less than seepage velocity?

Seepage velocity is based upon the void space of the soil and simultaneously the discharge velocity is based upon the gross sectional area of the soil. Therefore, this directly means that the seepage velocity is greater than the discharge velocity.

What is rate of discharge?

What are methods of discharge measurement?

Stream discharge can be measured using (1) volumetric gauging, (2) float gauging, (3) current metering, (4) dilution gauging (constant injection or gulp methods), (5) structural methods, and (6) slope-area methods. The choice of method depends on the characteristics of the stream and on the application.

What do you mean by discharge?

1a : the act of relieving of something that oppresses : release. b : something that discharges or releases especially : a certification of release or payment produced the discharge as evidence. 2 : the state of being discharged or relieved. 3 : the act of discharging or unloading her discharge from the hospital.

What is the formula to calculate discharge?

Use the formula q=va to calculate the discharge of a river, where “q” is the discharge, “v” is the velocity and “a” is the cross-sectional area of the river. Measure the depth and the width of the river. For example, assume a river is 4 metres deep and 5 metres wide in one area. Multiply the depth by the width to find the cross-sectional area.

How do you calculate stream discharge?

The discharge of a stream is the product of its velocity (V – length of travel per unit of time such as feet/second) times depth of the water (D – unit of length) times width (W of the water – units of length). (Make sure all all three lengths are expressed in the same unit.) Discharge = V x D x W

What is the equation for flow rate?

The flow rate formula, in general, is Q = A × v, where Q is the flow rate, A is the cross-sectional area at a point in the path of the flow and v is the velocity of the liquid at that point.

What is stream discharge equation?

Discharge, or the volume of water flowing in a stream over a set interval of time, can be determined with the equation: Q = AV, where Q is discharge (volume/unit time-e.g. m 3/second, also called cumecs ), A is the cross-sectional area of the stream (e.g. m 2), and V is the average velocity (e.g. m/s).