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Time interval is the time duration between two events/entities of interest. Check FAQs
Δt=((23)AR(815)Cd2gtan(θ2))((1h232)-(1HUpstream32))
Δt - Time Interval?AR - Cross-Sectional Area of Reservoir?Cd - Coefficient of Discharge?g - Acceleration due to Gravity?θ - Theta?h2 - Head on Downstream of Weir?HUpstream - Head on Upstream of Weir?

Time Required to Lower Liquid Surface for Triangular Notch Example

With values
With units
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Here is how the Time Required to Lower Liquid Surface for Triangular Notch equation looks like with Values.

Here is how the Time Required to Lower Liquid Surface for Triangular Notch equation looks like with Units.

Here is how the Time Required to Lower Liquid Surface for Triangular Notch equation looks like.

1.1555Edit=((23)13Edit(815)0.66Edit29.8Edittan(30Edit2))((15.1Edit32)-(110.1Edit32))
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Time Required to Lower Liquid Surface for Triangular Notch Solution

Follow our step by step solution on how to calculate Time Required to Lower Liquid Surface for Triangular Notch?

FIRST Step Consider the formula
Δt=((23)AR(815)Cd2gtan(θ2))((1h232)-(1HUpstream32))
Next Step Substitute values of Variables
Δt=((23)13(815)0.6629.8m/s²tan(30°2))((15.1m32)-(110.1m32))
Next Step Convert Units
Δt=((23)13(815)0.6629.8m/s²tan(0.5236rad2))((15.1m32)-(110.1m32))
Next Step Prepare to Evaluate
Δt=((23)13(815)0.6629.8tan(0.52362))((15.132)-(110.132))
Next Step Evaluate
Δt=1.1554617380882s
LAST Step Rounding Answer
Δt=1.1555s

Time Required to Lower Liquid Surface for Triangular Notch Formula Elements

Variables
Functions
Time Interval
Time interval is the time duration between two events/entities of interest.
Symbol: Δt
Measurement: TimeUnit: s
Note: Value should be greater than 0.
Cross-Sectional Area of Reservoir
Cross-Sectional Area of Reservoir is the area of a reservoir that is obtained when a three-dimensional reservoir shape is sliced perpendicular to some specified axis at a point.
Symbol: AR
Measurement: AreaUnit:
Note: Value should be greater than 0.
Coefficient of Discharge
The Coefficient of Discharge is ratio of actual discharge to theoretical discharge.
Symbol: Cd
Measurement: NAUnit: Unitless
Note: Value should be between 0 to 1.2.
Acceleration due to Gravity
The Acceleration due to Gravity is acceleration gained by an object because of gravitational force.
Symbol: g
Measurement: AccelerationUnit: m/s²
Note: Value should be greater than 0.
Theta
Theta is an angle that can be defined as the figure formed by two rays meeting at a common endpoint.
Symbol: θ
Measurement: AngleUnit: °
Note: Value can be positive or negative.
Head on Downstream of Weir
Head on Downstream of Weir pertains to the energy status of water in water flow systems and is useful for describing flow in hydraulic structures.
Symbol: h2
Measurement: LengthUnit: m
Note: Value can be positive or negative.
Head on Upstream of Weir
Head on Upstream of Weirr pertains to the energy status of water in water flow systems and is useful for describing flow in hydraulic structures.
Symbol: HUpstream
Measurement: LengthUnit: m
Note: Value can be positive or negative.
tan
The tangent of an angle is a trigonometric ratio of the length of the side opposite an angle to the length of the side adjacent to an angle in a right triangle.
Syntax: tan(Angle)
sqrt
A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.
Syntax: sqrt(Number)

Other Formulas to find Time Interval

​Go Time Required to Lower Liquid Surface
Δt=(2AR(23)Cd2gLw)(1h2-1HUpstream)
​Go Time Required to Lower Liquid Surface using Bazins Formula
Δt=(2ARm2g)(1h2-1HUpstream)

Other formulas in Time Required to Empty a Reservoir with Rectangular Weir category

​Go Coefficient of Discharge for Time Required to Lower Liquid Surface
Cd=(2AR(23)Δt2gLw)(1h2-1HUpstream)
​Go Length of Crest for time required to Lower Liquid Surface
Lw=(2AR(23)Cd2gΔt)(1h2-1HUpstream)

How to Evaluate Time Required to Lower Liquid Surface for Triangular Notch?

Time Required to Lower Liquid Surface for Triangular Notch evaluator uses Time Interval = (((2/3)*Cross-Sectional Area of Reservoir)/((8/15)*Coefficient of Discharge*sqrt(2*Acceleration due to Gravity)*tan(Theta/2)))*((1/Head on Downstream of Weir^(3/2))-(1/Head on Upstream of Weir^(3/2))) to evaluate the Time Interval, The Time Required to Lower Liquid Surface for Triangular Notch is defined as amount of time taken by lowering water surface from Head at upstream to downstream. Time Interval is denoted by Δt symbol.

How to evaluate Time Required to Lower Liquid Surface for Triangular Notch using this online evaluator? To use this online evaluator for Time Required to Lower Liquid Surface for Triangular Notch, enter Cross-Sectional Area of Reservoir (AR), Coefficient of Discharge (Cd), Acceleration due to Gravity (g), Theta (θ), Head on Downstream of Weir (h2) & Head on Upstream of Weir (HUpstream) and hit the calculate button.

FAQs on Time Required to Lower Liquid Surface for Triangular Notch

What is the formula to find Time Required to Lower Liquid Surface for Triangular Notch?
The formula of Time Required to Lower Liquid Surface for Triangular Notch is expressed as Time Interval = (((2/3)*Cross-Sectional Area of Reservoir)/((8/15)*Coefficient of Discharge*sqrt(2*Acceleration due to Gravity)*tan(Theta/2)))*((1/Head on Downstream of Weir^(3/2))-(1/Head on Upstream of Weir^(3/2))). Here is an example- 1.155462 = (((2/3)*13)/((8/15)*0.66*sqrt(2*9.8)*tan(0.5235987755982/2)))*((1/5.1^(3/2))-(1/10.1^(3/2))).
How to calculate Time Required to Lower Liquid Surface for Triangular Notch?
With Cross-Sectional Area of Reservoir (AR), Coefficient of Discharge (Cd), Acceleration due to Gravity (g), Theta (θ), Head on Downstream of Weir (h2) & Head on Upstream of Weir (HUpstream) we can find Time Required to Lower Liquid Surface for Triangular Notch using the formula - Time Interval = (((2/3)*Cross-Sectional Area of Reservoir)/((8/15)*Coefficient of Discharge*sqrt(2*Acceleration due to Gravity)*tan(Theta/2)))*((1/Head on Downstream of Weir^(3/2))-(1/Head on Upstream of Weir^(3/2))). This formula also uses Tangent (tan), Square Root (sqrt) function(s).
What are the other ways to Calculate Time Interval?
Here are the different ways to Calculate Time Interval-
  • Time Interval=((2*Cross-Sectional Area of Reservoir)/((2/3)*Coefficient of Discharge*sqrt(2*Acceleration due to Gravity)*Length of Weir Crest))*(1/sqrt(Head on Downstream of Weir)-1/sqrt(Head on Upstream of Weir))OpenImg
  • Time Interval=((2*Cross-Sectional Area of Reservoir)/(Bazins Coefficient*sqrt(2*Acceleration due to Gravity)))*(1/sqrt(Head on Downstream of Weir)-1/sqrt(Head on Upstream of Weir))OpenImg
Can the Time Required to Lower Liquid Surface for Triangular Notch be negative?
No, the Time Required to Lower Liquid Surface for Triangular Notch, measured in Time cannot be negative.
Which unit is used to measure Time Required to Lower Liquid Surface for Triangular Notch?
Time Required to Lower Liquid Surface for Triangular Notch is usually measured using the Second[s] for Time. Millisecond[s], Microsecond[s], Nanosecond[s] are the few other units in which Time Required to Lower Liquid Surface for Triangular Notch can be measured.
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