Fluid mechanics
If 6m³ oil weight 47KN, what’s specific weight, and specific gravity ,respectively ?
1. 7.88 KN/m³ , 789 kg/m³ , 0.798
2. 7.833 kN/m³ , 783 kg/m³ , 0.798
3. 8.00 kN/m³ , 798 kg/m³ , 0.800
4. 8.00 kN/m³ , 800 kg/m³ , 0.800
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If 6m³ oil weight 47KN, what’s specific weight, and specific gravity ,respectively ?
1. 7.88 KN/m³ , 789 kg/m³ , 0.798
2. 7.833 kN/m³ , 783 kg/m³ , 0.798
3. 8.00 kN/m³ , 798 kg/m³ , 0.800
4. 8.00 kN/m³ , 800 kg/m³ , 0.800
#participate #quiz #fluidmechanics
#gate
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Fluid mechanics If 6m³ oil weight 47KN, what’s specific weight, and specific gravity ,respectively ? 1. 7.88 KN/m³ , 789 kg/m³ , 0.798 2. 7.833 kN/m³ , 783 kg/m³ , 0.798 3. 8.00 kN/m³ , 798 kg/m³ , 0.800 4. 8.00 kN/m³ , 800 kg/m³ , 0.800 #participate…
Answer for this question 👆🏾👆🏾👆🏾
➪ γOil = 𝑤 = 47 = 7.833kN/m³
V 6
➪ ρoil = γOil = 7.833KN/m³ = 789kg/m³
g 9.81 m/s
👉🏿Note that g (gravity) which is
9.81m/s and the unit weight of oil is
given in KN(kilo Newton ) so we shall
multiply it with 1000
➪ specific gravity (SG)
SG= γOil = 7.833kN/m³ = 0.798
γWater 9.81kN/m³
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@etconp
➪ γOil = 𝑤 = 47 = 7.833kN/m³
V 6
➪ ρoil = γOil = 7.833KN/m³ = 789kg/m³
g 9.81 m/s
👉🏿Note that g (gravity) which is
9.81m/s and the unit weight of oil is
given in KN(kilo Newton ) so we shall
multiply it with 1000
➪ specific gravity (SG)
SG= γOil = 7.833kN/m³ = 0.798
γWater 9.81kN/m³
#share #Fluidmechanics
@etconp
What’s the difference between fluid and flow ?
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#fluidmechanics
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Ethio Construction Engineering
What’s the difference between fluid and flow ? #fluidmechanics @etconp Facebook:- https://www.facebook.com/etconp/
What’s the difference between fluid and flow ?
Answer
Fluid is a substance which is capable of flowing under the action of shear force.
Flow is deformation in a fluid with respect to time
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@etconp
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Answer
Fluid is a substance which is capable of flowing under the action of shear force.
Flow is deformation in a fluid with respect to time
#fluidmechanics
@etconp
Facebook:- https://www.facebook.com/etconp/
👉Here’s a detailed explanation of the Hydraulic Design of Side Inlet Intake based on the engineering guide shared:
🔹 Concept of Side Inlet Intake
A side inlet intake is a hydraulic structure used to divert water from a main channel into a secondary chamber or pipe system. It is commonly applied in irrigation, drainage, and water supply systems. The design ensures controlled flow, prevents clogging, and maintains safe velocities to avoid erosion or structural damage.
🔹 Key Components
- Trash rack – prevents debris from entering the intake.
- Gate valve – regulates flow into the wet chamber.
- Wet chamber – collects water before discharge.
- Dry chamber – houses control mechanisms.
- Weep holes – relieve pressure and prevent uplift.
- Concrete slab – provides structural stability.
🔹 Hydraulic Design Parameters
1. Exit Velocity (V):
- Formula ensures velocity ≤ 0.60 m/s (safe limit).
- Prevents erosion at outlet.
2. Elevation Difference (Hf):
- Difference between inlet and outlet elevations.
- Used to calculate constructive length (L).
3. Length (L):
- Derived from elevation difference.
- Ensures smooth transition of flow.
4. Inlet Pipe Diameter (D):
- Calculated using discharge equation:
- Area \( A = \frac{Q{max}}{Cd \times V} \)
- Diameter \( D = \sqrt{\frac{4A}{\pi}} \)
- Ensures adequate flow capacity.
🔹 Example Design Values
- Head (H): 0.40 m
- Gravity (g): 9.81 m/s²
- Exit velocity (V): 0.60 m/s (recommended)
- Inlet elevation (Hf): 0.37 m
- Constructive length (L): 1.25 m
- Pipe diameter (D): 0.09 m (≈ 3.5 inch)
🔹 Practical Considerations
- Flow regulation: Gate valves must be sized for operational control.
- Sediment control: Trash racks and chamber design reduce clogging.
- Structural safety: Concrete slab and weep holes prevent uplift and failure.
- Maintenance: Regular cleaning of trash racks and inspection of valves is essential.
🔹 In short
The side inlet intake design balances hydraulic efficiency and structural safety. By controlling velocity, elevation differences, and pipe sizing, engineers ensure reliable water diversion without erosion or clogging.
#CivilEngineering #HydraulicDesign #WaterManagement #IntakeStructure #StructuralMechanics #EngineeringDesign #PlumbingSystems #ConcreteStructures #FluidMechanics
@etconp
🔹 Concept of Side Inlet Intake
A side inlet intake is a hydraulic structure used to divert water from a main channel into a secondary chamber or pipe system. It is commonly applied in irrigation, drainage, and water supply systems. The design ensures controlled flow, prevents clogging, and maintains safe velocities to avoid erosion or structural damage.
🔹 Key Components
- Trash rack – prevents debris from entering the intake.
- Gate valve – regulates flow into the wet chamber.
- Wet chamber – collects water before discharge.
- Dry chamber – houses control mechanisms.
- Weep holes – relieve pressure and prevent uplift.
- Concrete slab – provides structural stability.
🔹 Hydraulic Design Parameters
1. Exit Velocity (V):
- Formula ensures velocity ≤ 0.60 m/s (safe limit).
- Prevents erosion at outlet.
2. Elevation Difference (Hf):
- Difference between inlet and outlet elevations.
- Used to calculate constructive length (L).
3. Length (L):
- Derived from elevation difference.
- Ensures smooth transition of flow.
4. Inlet Pipe Diameter (D):
- Calculated using discharge equation:
- Area \( A = \frac{Q{max}}{Cd \times V} \)
- Diameter \( D = \sqrt{\frac{4A}{\pi}} \)
- Ensures adequate flow capacity.
🔹 Example Design Values
- Head (H): 0.40 m
- Gravity (g): 9.81 m/s²
- Exit velocity (V): 0.60 m/s (recommended)
- Inlet elevation (Hf): 0.37 m
- Constructive length (L): 1.25 m
- Pipe diameter (D): 0.09 m (≈ 3.5 inch)
🔹 Practical Considerations
- Flow regulation: Gate valves must be sized for operational control.
- Sediment control: Trash racks and chamber design reduce clogging.
- Structural safety: Concrete slab and weep holes prevent uplift and failure.
- Maintenance: Regular cleaning of trash racks and inspection of valves is essential.
🔹 In short
The side inlet intake design balances hydraulic efficiency and structural safety. By controlling velocity, elevation differences, and pipe sizing, engineers ensure reliable water diversion without erosion or clogging.
#CivilEngineering #HydraulicDesign #WaterManagement #IntakeStructure #StructuralMechanics #EngineeringDesign #PlumbingSystems #ConcreteStructures #FluidMechanics
@etconp
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