Atmospheric pressure head at constant head and absolute pressure head Calculator

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Orifices and Mouthpieces

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✖The Absolute Pressure Head is considered for the liquid at venacontracta.ⓘ Absolute Pressure Head [H_AP]			+10% -10%
✖The Constant head is considered for discharging of the water from an mouthpiece.ⓘ Constant Head [H_c]			+10% -10%
✖The Velocity of liquid outlet is considered on flow through an external cylindrical mouthpiece.ⓘ Velocity of Liquid Outlet [V_o]			+10% -10%

✖The Atmospheric Pressure Head is considered for the liquid at venacontracta.ⓘ Atmospheric pressure head at constant head and absolute pressure head [H_a]

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Formula

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Atmospheric pressure head at constant head and absolute pressure head

Formula

`"H"_{"a"} = "H"_{"AP"}-"H"_{"c"}+((("V"_{"o"}/0.62)^2)*(1/(2*9.81)))`

Example

`"7.510911m"="14m"-"10.5m"+((("5.5m/s"/0.62)^2)*(1/(2*9.81)))`

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Atmospheric pressure head at constant head and absolute pressure head Solution

STEP 0: Pre-Calculation Summary

Formula Used

Atmospheric Pressure Head = Absolute Pressure Head-Constant Head+(((Velocity of Liquid Outlet/0.62)^2)*(1/(2*9.81)))
H_a = H_AP-H_c+(((V_o/0.62)^2)*(1/(2*9.81)))
This formula uses 4 Variables

Variables Used

Atmospheric Pressure Head - (Measured in Meter) - The Atmospheric Pressure Head is considered for the liquid at venacontracta.
Absolute Pressure Head - (Measured in Meter) - The Absolute Pressure Head is considered for the liquid at venacontracta.
Constant Head - (Measured in Meter) - The Constant head is considered for discharging of the water from an mouthpiece.
Velocity of Liquid Outlet - (Measured in Meter per Second) - The Velocity of liquid outlet is considered on flow through an external cylindrical mouthpiece.

STEP 1: Convert Input(s) to Base Unit

Absolute Pressure Head: 14 Meter --> 14 Meter No Conversion Required
Constant Head: 10.5 Meter --> 10.5 Meter No Conversion Required
Velocity of Liquid Outlet: 5.5 Meter per Second --> 5.5 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

H_a = H_AP-H_c+(((V_o/0.62)^2)*(1/(2*9.81))) --> 14-10.5+(((5.5/0.62)^2)*(1/(2*9.81)))

Evaluating ... ...

H_a = 7.51091073794393

STEP 3: Convert Result to Output's Unit

7.51091073794393 Meter --> No Conversion Required

FINAL ANSWER

7.51091073794393 ≈ 7.510911 Meter <-- Atmospheric Pressure Head

(Calculation completed in 00.004 seconds)

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Created by Maiarutselvan V

PSG College of Technology (PSGCT), Coimbatore

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Verified by Sai Venkata Phanindra Chary Arendra

Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology (VNRVJIET), Hyderabad

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< 6 Flow Head Calculators

Absolute pressure head at constant head and atmospheric pressure head

Go Absolute Pressure Head = Atmospheric Pressure Head+Constant Head-(((Velocity of Liquid Outlet/0.62)^2)*(1/(2*9.81)))

Atmospheric pressure head at constant head and absolute pressure head

Go Atmospheric Pressure Head = Absolute Pressure Head-Constant Head+(((Velocity of Liquid Outlet/0.62)^2)*(1/(2*9.81)))

Loss of head due to sudden enlargement

Go Loss of Head = ((Velocity of Liquid Inlet-Velocity of Liquid Outlet)^2)/(2*9.81)

Head of liquid for head loss and coefficient of velocity

Go Head of the Liquid = Head Loss/(1-(Coefficient of Velocity^2))

Loss of head due to fluid resistance

Go Head Loss = Head of the Liquid*(1-(Coefficient of Velocity^2))

Head of Liquid above Centre of Orifice

Go Head of the Liquid = (Theoretical Velocity^2)/(2*9.81)

Atmospheric pressure head at constant head and absolute pressure head Formula

Atmospheric Pressure Head = Absolute Pressure Head-Constant Head+(((Velocity of Liquid Outlet/0.62)^2)*(1/(2*9.81)))
H_a = H_AP-H_c+(((V_o/0.62)^2)*(1/(2*9.81)))

What is mouthpiece?

A mouthpiece is a short tube of length not more than two to three times its diameter, which is. fitted to a tank for measuring the discharge of the flow from the tank. By fitting the mouthpiece, the. discharge through an orifice of the tank can be increased.

What is an external cylindrical mouthpiece?

The mouthpiece is an attachment in the form of a small tube fixed to an orifice. When the tube is fixed externally, it is known as an external mouthpiece. Depending on the shape, a mouthpiece can be cylindrical, convergent, divergent, convergent-divergent, or of any other form.

How to Calculate Atmospheric pressure head at constant head and absolute pressure head?

Atmospheric pressure head at constant head and absolute pressure head calculator uses Atmospheric Pressure Head = Absolute Pressure Head-Constant Head+(((Velocity of Liquid Outlet/0.62)^2)*(1/(2*9.81))) to calculate the Atmospheric Pressure Head, The Atmospheric pressure head at constant head and absolute pressure head is considered for the discharge of liquid at the vena_contracta section on flow through an external cylindrical mouthpiece. Atmospheric Pressure Head is denoted by H_a symbol.

How to calculate Atmospheric pressure head at constant head and absolute pressure head using this online calculator? To use this online calculator for Atmospheric pressure head at constant head and absolute pressure head, enter Absolute Pressure Head (H_AP), Constant Head (H_c) & Velocity of Liquid Outlet (V_o) and hit the calculate button. Here is how the Atmospheric pressure head at constant head and absolute pressure head calculation can be explained with given input values -> 7.510911 = 14-10.5+(((5.5/0.62)^2)*(1/(2*9.81))).

FAQ

What is Atmospheric pressure head at constant head and absolute pressure head?

The Atmospheric pressure head at constant head and absolute pressure head is considered for the discharge of liquid at the vena_contracta section on flow through an external cylindrical mouthpiece and is represented as H_a = H_AP-H_c+(((V_o/0.62)^2)*(1/(2*9.81))) or Atmospheric Pressure Head = Absolute Pressure Head-Constant Head+(((Velocity of Liquid Outlet/0.62)^2)*(1/(2*9.81))). The Absolute Pressure Head is considered for the liquid at venacontracta, The Constant head is considered for discharging of the water from an mouthpiece & The Velocity of liquid outlet is considered on flow through an external cylindrical mouthpiece.

How to calculate Atmospheric pressure head at constant head and absolute pressure head?

The Atmospheric pressure head at constant head and absolute pressure head is considered for the discharge of liquid at the vena_contracta section on flow through an external cylindrical mouthpiece is calculated using Atmospheric Pressure Head = Absolute Pressure Head-Constant Head+(((Velocity of Liquid Outlet/0.62)^2)*(1/(2*9.81))). To calculate Atmospheric pressure head at constant head and absolute pressure head, you need Absolute Pressure Head (H_AP), Constant Head (H_c) & Velocity of Liquid Outlet (V_o). With our tool, you need to enter the respective value for Absolute Pressure Head, Constant Head & Velocity of Liquid Outlet and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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