Table of Contents

## What is the SI unit of discharge?

The SI unit is cubic metres per second (m3/s). Another unit used is standard cubic centimetres per minute (SCCM). In hydrometry, it is known as discharge.

## What is loss coefficient k?

Loss coefficient, abbrevated as K, a dimensionless number, measures the minor loss to the change in velocity due to friction thru pipes, fittings, and valves. Any bend or tee, expansion or contraction, valve opening or partially closing can cause minor or even major losses.

## How do you find the coefficient of discharge?

The discharge coefficient of an orifice or nozzle is defined as the ratio of the actual to theoretical flow rate:Cd=Measured Flow RateTheoretical Flow Rate (1)η=σΔp12ρ¯V2 (6)ξ=σΔp¯Δp (7)

## Is coefficient of discharge constant?

Unlike the flow coefficient, discharge coefficient is dimensionless and almost constant value for any diameter of a single model. For the same high of fluid in the reservoir, higher is the discharge coefficient, higher is the flow rate, therefore the reservoir can be voided at shorter time.

## What is effective flow area?

Due to the constant opening and closing of the valves, the cross sectional area through which the flow passes through changes. This area is referred to as the effective area.