7TH CLASSES PHYSICS DAILY PLAN
... Viscosity: The degree of internal friction within the fluid Now let us look at some general characteristics of fluid flow 1-) Fluid flow can be steady or nonsteady. 2-) Fluid flow can be rotational or irrotational. 3-) Fluid flow can be compressible or incompressible. 4-) Fluid flow can be viscous o ...
... Viscosity: The degree of internal friction within the fluid Now let us look at some general characteristics of fluid flow 1-) Fluid flow can be steady or nonsteady. 2-) Fluid flow can be rotational or irrotational. 3-) Fluid flow can be compressible or incompressible. 4-) Fluid flow can be viscous o ...
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... (ii) In a force pump, a force of 50N is applied on a piston of diameter 0.4m during the down stroke. Find the pressure exerted on the water by the piston. (c) (i) Define moment of a force. (ii) State two ways of increasing the stability of an object. (d) (i) A uniform metre rule of mass 80g is pivot ...
... (ii) In a force pump, a force of 50N is applied on a piston of diameter 0.4m during the down stroke. Find the pressure exerted on the water by the piston. (c) (i) Define moment of a force. (ii) State two ways of increasing the stability of an object. (d) (i) A uniform metre rule of mass 80g is pivot ...
DRIVING FORCES FOR THE TRANSPORT PHENOMENA What is
... What is the driving force for momentum transport? Velocity Gradient!!! What is the driving force for heat transfer? Temperature Gradient!!! ...
... What is the driving force for momentum transport? Velocity Gradient!!! What is the driving force for heat transfer? Temperature Gradient!!! ...
Advanced Sanitary Engineering
... - Find the BOD (assuming complete biodegradation) - Find the chemical oxygen demand (COD) (assuming complete biodegradation) - Find the total organic carbon (TOC) 3. The 5-day BOD at 20 oC is equal to 250 mg/L for three different samples, but the 20 oC (k) values are equal to 0.25d-1, 0.35 d-1, and ...
... - Find the BOD (assuming complete biodegradation) - Find the chemical oxygen demand (COD) (assuming complete biodegradation) - Find the total organic carbon (TOC) 3. The 5-day BOD at 20 oC is equal to 250 mg/L for three different samples, but the 20 oC (k) values are equal to 0.25d-1, 0.35 d-1, and ...
The Momentum Equation
... It may be sharp crested but also may have a substantial width in the direction of flow - it is used as both a flow measuring device and a device to raise water levels. Weir Assumptions We will assume that the velocity of the fluid approaching the weir is small so that kinetic energy can be neglect ...
... It may be sharp crested but also may have a substantial width in the direction of flow - it is used as both a flow measuring device and a device to raise water levels. Weir Assumptions We will assume that the velocity of the fluid approaching the weir is small so that kinetic energy can be neglect ...
30.2 Pre entrained hydraulic jump (PHJ)
... entrainment in stilling basins is bulking which leads to considerably greater and more efficient energy dissipation. In stilling basins the change of slope (to a flatter one) reduces air concentration and air gets released. Frankovinc in 1953 concludes that the greater part of energy loss occurs in ...
... entrainment in stilling basins is bulking which leads to considerably greater and more efficient energy dissipation. In stilling basins the change of slope (to a flatter one) reduces air concentration and air gets released. Frankovinc in 1953 concludes that the greater part of energy loss occurs in ...
Hydraulic jumps in rectangular channels
Hydraulic jump in a rectangular channel, also known as classical jump, is a natural phenomenon that occurs whenever flow changes from supercritical to subcritical flow. In this transition, the water surface rises abruptly, surface rollers are formed, intense mixing occurs, air is entrained, and often a large amount of energy is dissipated. In other words, a hydraulic jump happens when a higher velocity, v1, supercritical flow upstream is met by a subcritical downstream flow with a decreased velocity, v2, and sufficient depth. Numeric models created using the Standard Step Method or HEC-RAS are used to track supercritical and subcritical flows to determine where in a specific reach a hydraulic jump will form. There are common hydraulic jumps that occur in everyday situations such as during the use of a household sink. There are also man-made hydraulic jumps created by devices like weirs or sluice gates. In general, a hydraulic jump may be used to dissipate energy, to mix chemicals, or to act as an aeration device.To produce equations describing the jump, since there is an unknown energy loss, there is a need to apply conservation of momentum. To develop this equation, a general situation in which there may or may not be an energy loss between upstream and downstream, and there may or may not be some obstacle on which there is a drag force Pf is considered. however, for a simple or classic hydraulic jump the force per unit width(Pf) equals 0. From there the momentum equation, and the conjugate depths equation can be derived.