problem:- A circular tank of diameter 4m contains water up to a height to 5m. Orifice of diameter 0.5m at the bottom. Find the time taken by water:- 1. To fall from 5m to 2m 2. For completely emptying to tank take cd=0.6

A circular tank of diameter 4m contains water up to a height to 5m.

Orifice of diameter 0.5m at the bottom. Find the time taken by water:-

1. To fall from 5m to 2m

2. For completely emptying to tank take cd=0.6

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Write the names of different types of flow

Write the names of different types of flow and explain them. The fluid flow is classified as:- 1. Steady and unsteady flow 2. Uniform and non-uniform flow 3. Laminar and turbulent flow 4. Compressible and incompressible flow 5. Rotational and irrotational flow 6. One,two and three dimensional flow (1). Steady flow:- Study flow is defined as flow types in which fluid characteristics like velocity, pressure, density, etc. at a point do not change over time. Unsteady flow:- Unsteady flow is the type of flow in which the speed, pressure or density at a point changes over time. (2). Uniform flow:- Uniform flow is defined as the type of flow in which the velocity does not change in space at any point. Non-uniform flow:- It is the flow kinds in which the velocity changes with regard to space at any stage. (3). Laminar flow:- The laminar flow is described as the flow kinds in which

Find the most economical cross section of a rectangular channel to carry 0.3m3/sec of water. When bed slope is 1:1000, C =60

Equation of motion

Equation of motion A net force fx acting on a fluid element in the direction of x is equivalent to the mass (m) of the fluid element, according to the second low of movement of newton. Multiplied by the acceleration a x in the x- direction. Thus mathematically, F x =m x a x --- (1) In the fluid flow, the fllowing forces are present : (1) F g . gravity force. (2) F p . the pressure force. (3) F v . the force due to viscosity (4) F t . force due to turbulenes. (5) F c . Force due to compressibility. Thus in equastion (1).the net force. F x = (f g ) x + (f p ) x +(f v ) x + (f t ) x +(f c ) x . (1)if the force due to compressibility, f c is negligible the resulting net force. F x = (f g ) x + (f p ) x +(f v ) x + (f t ) x and equation of motion are called reynold’s equation.

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