Bernoulli equation with friction loss
[DOC File]Louisiana Tech University
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Using Bernoulli’s equation with no losses, derive an expression for the velocity V1 that is just sufficient to bring reservoir fluid into the throat. 1.4 Assumptions. Steady flow. Incompressible fluid. Frictionless flow. Flow along a single streamline. No shaft work between points 1 and 2. No heat transfer between points 1 and 2. 1.5 Solution ...
[DOC File]Vapor pressure and cavitation
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Equation [2] is Bernoulli’s equation with the pump pressure increase ((pP) and fluid friction loss due to piping ((pF1-2) and equipment ((pEQ1-2) friction terms added. Pressure can be expressed in terms of fluid column height or pressure head.
[DOC File]EIT Review: Thermodynamics Dr. S. M. Howard
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The overall energy balance is the Bernoulli equation with provision for 1) the input (or withdrawal) of mechanical energy, 2) turbulent flow, and 3) frictional losses. It has the form (P2 - P1)/ + (V22/ 2- V12/ 1)/2 +g(Z2 - Z1) + M* + Ef = 0. where = flow factor (1 for laminar, 1/2 for turbulent) M* = mechanical energy per unit mass
[DOC File]Non-Circular Ducts:
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Given a basic obstruction meter as shown in the accompanying figure, write Bernoulli’s equation between points 1 & 2. Assume: 1. Steady - flow 2. incompressible flow 3. no friction losses. 4. uniform velocity profiles at 1 & 2 5. Z1 = Z2. For these conditions, Bernoulli’s Equation and …
[DOC File]Flow in Pipes
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All the variables that influence friction loss have been put together into an equation called the Hazen-Williams Formula. This is just one of several friction loss formulas. where the friction loss is in feet (ft), flow rate is in gallons per minute (gpm), the pipe length is …
[DOC File]Air Flow, Air Systems, Pressure, and Fan Performance
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Bernoulli equation. Bernoulli's equation in its simple form shows that, for an elemental flow stream, the difference in total pressures between any two points in a duct is equal to the pressure loss between these points, or: (Pressure loss)1-2 = (Total pressure)1 - (Total pressure)2. Conservation of momentum
[DOC File]Chapter 5 Pressure Variation in Flowing Fluids
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Apply energy equation to a stream tube without any shaft work. Energy eq : (If hL = 0 (i.e., ( = 0) we get Bernoulli equation and conservation of mechanical energy along a streamline (Therefore, energy equation for steady 1-D pipe flow can be interpreted as a modified Bernoulli equation to include viscous effects (hL) and shaft work (hp or ht)
[DOC File]Home | Kean University
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Head loss comes from friction between the fluid and the channel, and it results in the energy grade line having a slight (always negative) slope. where hf is the frictional head loss. Frictional open channel Bernoulli diagram showing head loss
[DOC File]Experiment 2
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For regions of straight pipe, one can replace the friction loss factor with the Fanning friction factor f: (E-8) where D is the diameter of the pipe, L is its length, and f is a function of Reynolds number, Re, as shown in Chapter 6. These relations are the basis for the Bernoulli equation given as Equation …
[DOC File]Unit Operations Laboratory
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Bernoulli’s equation with friction takes the form: (1) where L = Length of drain pipe, inches. H = Liquid level above the bottom of the tank, inches. Kc = Contraction loss coefficient, dimensionless. Ke = Exit loss coefficient, dimensionless V = Velocity in drain tube, ft/s. g = Gravitational constant, 32.174 ft/s2. f = Fanning friction factor
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