GATE ME
Fluid Mechanics
Turbulent Flow
Previous Years Questions

## Marks 1

The instantaneous stream-wise velocity of a turbulent flow is given as follows: $$u\left( {x,y,z,t} \right) = \overline u \left( {x,y,z} \right) + \m... Consider the turbulent flow of a fluid through a circular pipe of diameter,$$D.$$Identify the correct pair of statements.$${\rm I}.$$The fluid is... For steady, fully developed flow inside a straight pipe of diameter$$D,$$neglecting gravity effects, the pressure drop$$\Delta p$$over a length$$...
Consider steady laminar incompressible axi-symmetric fully developed viscous flow through a straight circular pipe of constant cross - sectional area ...
Oil flows through a $$200mm$$ diameter horizontal cast iron pipe (friction factor, $$f=0.0225$$) of length $$500m.$$ The volumetric flow rate is $$0.2... Prandtl’s mixing length is turbulent flow signifies The parameters which determines the friction factor for turbulent flow in a rough pipe are: ## Marks 2 Water at$${25^0}C$$is flowing through a$$1.0km$$long$$G.I.$$pipe of$$200mm$$diameter at the rate of$$0.07{m^3}/s.$$If value of Darcy fr... A siphon draws water from a reservoir and discharges it out at atmospheric pressure. Assuming ideal fluid and the reservoir is large, the velocity at ... A syringe with a frictionless plunger contains water and has at its end a$$100mm$$long needle of$$1mm$$diameter. The internal diameter o... A syringe with a frictionless plunger contains water and has at its end a$$100mm$$long needle of$$1mm$$diameter. The internal diameter o... The discharge velocity at the pipe exit in figure is ... Fluid is flowing with an average velocity of$$V$$through a pipe of diameter$$d.$$over a length of$$L,$$the “head” loss is given by$${{fL{V^2}} ...
Shown below are three tanks, tank $$1$$ without an orifice tube and tanks $$2$$ and $$3$$ with orifice tubes as shown. Neglecting losses and assuming ...
In the case of turbulent flow of a fluid through a circular tube (as compared to the case of laminar flow at the same flow rate) the maximum velocity ...

## Marks 5

A $$400m$$ long horizontal pipe is to deliver $$900$$ kg of oil $$\left( {S = 0.9,\,\,\upsilon = 0.0002{m^2}/s} \right)$$ per minute. If the head lo...
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