Specific Weight of Water in Suction Pipe Calculator

✖Depth of the Suction Pipe Entrance refers to the vertical distance between the water surface and the point where the suction pipe intake is located.ⓘ Depth of the Suction Pipe Entrance [Zs]			+10% -10%
✖Depth of Submergence of the Pump refers to the vertical distance between the water surface and the inlet of the pump when it is fully submerged.ⓘ Depth of Submergence of the Pump [Z_p]			+10% -10%
✖Hydraulic Loss Coefficient is a dimensionless number that quantifies the energy losses due to the flow of water through structures such as breakwaters and seawalls.ⓘ Hydraulic Loss Coefficient [f]			+10% -10%
✖Flow Velocity in the Suction Pipe is a measure of speed of the flow through a suction pipe.ⓘ Flow Velocity in the Suction Pipe [Vs]			+10% -10%
✖Specific Weight of the Mixture refers to the weight per unit volume of a mixture, such as water and suspended sediments or other materials, found in coastal environments.ⓘ Specific Weight of the Mixture [γ_m]			+10% -10%
✖Vacuum at the Pump Entrance refers to the negative pressure created at the inlet of a pump used for applications such as dredging, dewatering, or managing water flow in coastal projects.ⓘ Vacuum at the Pump Entrance [p^']			+10% -10%

✖Specific Weight of Water is the weight per unit volume of water.ⓘ Specific Weight of Water in Suction Pipe [y_w]

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Formula

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Specific Weight of Water in Suction Pipe

Formula

y w = \frac{(Zs - Z p + (f \cdot \frac{{Vs}^{2}}{2} \cdot [g])) \cdot γ m}{p' + Zs}

Example

9.189366 kN/m³ = \frac{(6 m - 6.5 m + (0.02 \cdot \frac{{9 m/s}^{2}}{2} \cdot [g])) \cdot 10 kN/m³}{2.1 m + 6 m}

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Specific Weight of Water in Suction Pipe Solution

STEP 0: Pre-Calculation Summary

Formula Used

Specific Weight of Water = ((Depth of the Suction Pipe Entrance-Depth of Submergence of the Pump+(Hydraulic Loss Coefficient*Flow Velocity in the Suction Pipe^2/2*[g]))*Specific Weight of the Mixture)/(Vacuum at the Pump Entrance+Depth of the Suction Pipe Entrance)
y_w = ((Zs-Z_p+(f*Vs^2/2*[g]))*γ_m)/(p^'+Zs)
This formula uses 1 Constants, 7 Variables

Constants Used

[g] - Gravitational acceleration on Earth Value Taken As 9.80665

Variables Used

Specific Weight of Water - (Measured in Newton per Cubic Meter) - Specific Weight of Water is the weight per unit volume of water.
Depth of the Suction Pipe Entrance - (Measured in Meter) - Depth of the Suction Pipe Entrance refers to the vertical distance between the water surface and the point where the suction pipe intake is located.
Depth of Submergence of the Pump - (Measured in Meter) - Depth of Submergence of the Pump refers to the vertical distance between the water surface and the inlet of the pump when it is fully submerged.
Hydraulic Loss Coefficient - Hydraulic Loss Coefficient is a dimensionless number that quantifies the energy losses due to the flow of water through structures such as breakwaters and seawalls.
Flow Velocity in the Suction Pipe - (Measured in Meter per Second) - Flow Velocity in the Suction Pipe is a measure of speed of the flow through a suction pipe.
Specific Weight of the Mixture - (Measured in Newton per Cubic Meter) - Specific Weight of the Mixture refers to the weight per unit volume of a mixture, such as water and suspended sediments or other materials, found in coastal environments.
Vacuum at the Pump Entrance - (Measured in Meter) - Vacuum at the Pump Entrance refers to the negative pressure created at the inlet of a pump used for applications such as dredging, dewatering, or managing water flow in coastal projects.

STEP 1: Convert Input(s) to Base Unit

Depth of the Suction Pipe Entrance: 6 Meter --> 6 Meter No Conversion Required
Depth of Submergence of the Pump: 6.5 Meter --> 6.5 Meter No Conversion Required
Hydraulic Loss Coefficient: 0.02 --> No Conversion Required
Flow Velocity in the Suction Pipe: 9 Meter per Second --> 9 Meter per Second No Conversion Required
Specific Weight of the Mixture: 10 Kilonewton per Cubic Meter --> 10000 Newton per Cubic Meter (Check conversion here)
Vacuum at the Pump Entrance: 2.1 Meter --> 2.1 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

y_w = ((Zs-Z_p+(f*Vs^2/2*[g]))*γ_m)/(p^'+Zs) --> ((6-6.5+(0.02*9^2/2*[g]))*10000)/(2.1+6)

Evaluating ... ...

y_w = 9189.36604938272

STEP 3: Convert Result to Output's Unit

9189.36604938272 Newton per Cubic Meter -->9.18936604938272 Kilonewton per Cubic Meter (Check conversion here)

FINAL ANSWER

9.18936604938272 ≈ 9.189366 Kilonewton per Cubic Meter <-- Specific Weight of Water

(Calculation completed in 00.020 seconds)

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Home » Engineering » Civil » Coastal and Ocean Engineering » Dredging Equipment » Plain Suction Dredge » Specific Weight of Water in Suction Pipe

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< Plain Suction Dredge Calculators

Flow Velocity in Suction Pipe

Go Flow Velocity in the Suction Pipe = sqrt((((Vacuum at the Pump Entrance+Depth of the Suction Pipe Entrance)*Specific Weight of Water/Specific Weight of the Mixture)-Depth of the Suction Pipe Entrance+Depth of Submergence of the Pump)*(2*[g])/Fetch Length)

Hydraulic Loss Coefficient from Suction Pipe Entrance to Pump

Go Hydraulic Loss Coefficient = (((Vacuum at the Pump Entrance+Depth of the Suction Pipe Entrance)*Specific Weight of Water/Specific Weight of the Mixture)-Depth of the Suction Pipe Entrance+Depth of Submergence of the Pump)/(Flow Velocity in the Suction Pipe^2/2*[g])

Vacuum at Pump Entrance Expressed as Head of Water

Go Vacuum at the Pump Entrance = ((Depth of the Suction Pipe Entrance-Depth of Submergence of the Pump+(Hydraulic Loss Coefficient*Flow Velocity in the Suction Pipe^2/2*[g])*Specific Weight of the Mixture)/Specific Weight of Water)-Depth of the Suction Pipe Entrance

Specific Weight of Mixture in Suction Pipe

Go Specific Weight of the Mixture = (Vacuum at the Pump Entrance+Depth of the Suction Pipe Entrance)*Specific Weight of Water/(Depth of the Suction Pipe Entrance-Depth of Submergence of the Pump+(Hydraulic Loss Coefficient*Flow Velocity in the Suction Pipe^2/2*[g]))

Specific Weight of Water in Suction Pipe Formula

What is Suction Dredger?

A Suction Dredger is a stationary dredger normally used for mining sand. The suction pipe of this dredger is inserted into the sand deposit and water jets are used to bring the sand up from the excavation site.

What is the function of Suction Pipe?

The function of suction piping is to supply an evenly distributed flow of water to the pump suction, with sufficient pressure to the pump to avoid excessive turbulence in the pump impeller. Pump suction problems can result in poor pump performance, poor bearing life and poor mechanical seal performance.

How to Calculate Specific Weight of Water in Suction Pipe?

Specific Weight of Water in Suction Pipe calculator uses Specific Weight of Water = ((Depth of the Suction Pipe Entrance-Depth of Submergence of the Pump+(Hydraulic Loss Coefficient*Flow Velocity in the Suction Pipe^2/2*[g]))*Specific Weight of the Mixture)/(Vacuum at the Pump Entrance+Depth of the Suction Pipe Entrance) to calculate the Specific Weight of Water, The Specific Weight of Water in Suction Pipe is defined as the unit weight, which is the weight per unit volume of a material. Specific Weight of Water is denoted by y_w symbol.

How to calculate Specific Weight of Water in Suction Pipe using this online calculator? To use this online calculator for Specific Weight of Water in Suction Pipe, enter Depth of the Suction Pipe Entrance (Zs), Depth of Submergence of the Pump (Z_p), Hydraulic Loss Coefficient (f), Flow Velocity in the Suction Pipe (Vs), Specific Weight of the Mixture (γ_m) & Vacuum at the Pump Entrance (p^') and hit the calculate button. Here is how the Specific Weight of Water in Suction Pipe calculation can be explained with given input values -> 0.009189 = ((6-6.5+(0.02*9^2/2*[g]))*10000)/(2.1+6).

FAQ

What is Specific Weight of Water in Suction Pipe?

The Specific Weight of Water in Suction Pipe is defined as the unit weight, which is the weight per unit volume of a material and is represented as y_w = ((Zs-Z_p+(f*Vs^2/2*[g]))*γ_m)/(p^'+Zs) or Specific Weight of Water = ((Depth of the Suction Pipe Entrance-Depth of Submergence of the Pump+(Hydraulic Loss Coefficient*Flow Velocity in the Suction Pipe^2/2*[g]))*Specific Weight of the Mixture)/(Vacuum at the Pump Entrance+Depth of the Suction Pipe Entrance). Depth of the Suction Pipe Entrance refers to the vertical distance between the water surface and the point where the suction pipe intake is located, Depth of Submergence of the Pump refers to the vertical distance between the water surface and the inlet of the pump when it is fully submerged, Hydraulic Loss Coefficient is a dimensionless number that quantifies the energy losses due to the flow of water through structures such as breakwaters and seawalls, Flow Velocity in the Suction Pipe is a measure of speed of the flow through a suction pipe, Specific Weight of the Mixture refers to the weight per unit volume of a mixture, such as water and suspended sediments or other materials, found in coastal environments & Vacuum at the Pump Entrance refers to the negative pressure created at the inlet of a pump used for applications such as dredging, dewatering, or managing water flow in coastal projects.

How to calculate Specific Weight of Water in Suction Pipe?

The Specific Weight of Water in Suction Pipe is defined as the unit weight, which is the weight per unit volume of a material is calculated using Specific Weight of Water = ((Depth of the Suction Pipe Entrance-Depth of Submergence of the Pump+(Hydraulic Loss Coefficient*Flow Velocity in the Suction Pipe^2/2*[g]))*Specific Weight of the Mixture)/(Vacuum at the Pump Entrance+Depth of the Suction Pipe Entrance). To calculate Specific Weight of Water in Suction Pipe, you need Depth of the Suction Pipe Entrance (Zs), Depth of Submergence of the Pump (Z_p), Hydraulic Loss Coefficient (f), Flow Velocity in the Suction Pipe (Vs), Specific Weight of the Mixture (γ_m) & Vacuum at the Pump Entrance (p^'). With our tool, you need to enter the respective value for Depth of the Suction Pipe Entrance, Depth of Submergence of the Pump, Hydraulic Loss Coefficient, Flow Velocity in the Suction Pipe, Specific Weight of the Mixture & Vacuum at the Pump Entrance 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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