# How is flow coefficient calculated in CV?

## How is flow coefficient calculated in CV?

SG is the specific gravity of the fluid (for water = 1), P is the pressure drop across the valve (expressed in psi). In more practical terms, the flow coefficient Cv is the volume (in US gallons) of water at 60 F that will flow per minute through a valve with a pressure drop of 1 psi across the valve.

## What is orifice coefficient?

Summary. The discharge coefficient is a dimensionless number used to characterise the flow and pressure loss behaviour of nozzles and orifices in fluid systems. Orifices and nozzles are typically used to deliberately reduce pressure, restrict flow or to measure flow rate.

– The blade loading coefficient (Ψ) for an axial flow compressor can be defined as the ratio of workdone to the square of peripheral velocity of blade.

### What is meridional velocity?

The mathematical definition for the two quantities are as follows: Cm is the meridional velocity (meridional velocity is the component of velocity in the radial and axial plane). U is the local rotational speed (radius*rotational velocity) and Δh0 is the change in total enthalpy or energy of the fluid.

### What is zonal wind?

The wind, or wind component, along the local parallel of latitude, as distinguished from the meridional wind.

What is the difference between zonal and meridional flow?

Zonal flow is defined as west to east or east to west, while meridional flow indicates north-to-south or south-to-north air motion.

#### What is the direction of solar meridional flow?

The Meridional Flow The Sun’s meridional flow – the flow of material along meridian lines from the equator toward the poles at the surface and from the poles to the equator below the surface- must also play an important role in the Sun’s magnetic dynamo.

#### What causes the cycle of solar activity?

The solar cycle affects activity on the surface of the Sun, such as sunspots which are caused by the Sun’s magnetic fields. As the magnetic fields change, so does the amount of activity on the Sun’s surface. The middle of the solar cycle is the solar maximum, or when the Sun has the most sunspots.

What are solar flares?

Solar flares are gigantic explosions associated with sunspots, caused by the sudden release of energy from “twists” in the sun’s magnetic field. They are intense bursts of radiation that can last for anywhere from minutes to hours. Coronal mass ejections (CMEs) sometimes coincide with solar flares.