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Fluid mechanics and hydraulics guides for civil engineers covering open channel flow, pipe flow, pump design, flood analysis using HEC-RAS, and irrigation engineering. Resources for students and professionals.
Solved numericalCalculate the capillary effect in millimetres in a glass tube of 4 mm diameter, when immersed in (i) water, an…Water Resources · 3 min read
Solved numericalThe pressure outside a water droplet of diameter 0.04 mm is 10.32 N/cm² (atmospheric pressure). Calculate the…Water Resources · 2 min read
Solved numericalCalculate the capillary rise in a glass tube of 2.5 mm diameter when immersed vertically in (a) water and (b)…Water Resources · 3 min read
Solved numericalThe surface tension of water in contact with air at 20°C is 0.0725 N/m. The pressure inside a droplet of water…Water Resources · 2 min read
Solved numericalFind the surface tension in a soap bubble of 40 mm diameter when the inside pressure is 2.5N/m2 above atmosphe…Water Resources · 2 min read
Solved numericalWhat is the bulk modulus of elasticity of a liquid which is compressed in a cylinder from a volume of 0.0125 m…Water Resources · 3 min read
Solved numericalDetermine the bulk modulus of elasticity of a liquid if the pressure of the liquid is increased from 70 N/cm²…Water Resources · 2 min read
Solved numericalCalculate the pressure exerted by 5 kg of nitrogen gas at a temperature of 10°C if the volume is 0.4 m3. Molec…Water Resources · 3 min read
Solved numericalA cylinder of 0.6 m3 in volume contains air at 50°C and 0.3 N/mm absolute pressure. The air is compressed to 0…Water Resources · 4 min read
Solved numericalA gas weighs 16 N/m³ at 25°C and at an absolute pressure of 0.25 N/mm². Determine the gas constant and density…Water Resources · 2 min read
Solved numericalA vertical gap 2.2 cm wide of infinite extent contains a fluid of viscosity 2.0 N s/m² and specific gravity 0.…Water Resources · 4 min read
Solved numericalTwo large plane surfaces are 2.4 cm apart. The space between the surfaces is filled with glycerine. What force…Water Resources · 5 min read
Solved numericalA Newtonian fluid is filled in the clearance between a shaft and a concentric sleeve. The sleeve attains a spe…Water Resources · 2 min read
Solved numericalA 15 cm diameter vertical cylinder rotates concentrically inside another cylinder of diameter 15.10 cm. Both c…Water Resources · 3 min read
Solved numericalIf the velocity profile of a fluid over a plate is parabolic with the vertex 20 cm from the plate, where the v…Water Resources · 2 min read
Solved numericalThe dynamic viscosity of oil used for lubrication between a shaft and sleeve is 6 poise. The shaft has a diame…Water Resources · 3 min read
Solved numericalThe velocity distribution for flow over a flat plate is given by u =3/4 y – y2 in which u is the velocit…Water Resources · 2 min read
Solved numericalDetermine the viscosity of a liquid having kinematic viscosity 6 stokes and specific gravity 1.9.Water Resources · 1 min read