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Water Resources
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 numericalA disk of radius R rotates at an angular velocity ω inside an oil bath of viscosity μ. Assuming a linear veloc…Water Resources · 2 min read
Solved numericalA 120mm circular disc rotates on a table separated by an oil of film of 2mm thickness. Find the viscosity of t…Water Resources · 1 min read
Solved numericalA fluid of absolute viscosity of 0.045 Pa-s and sp gr of 0.91 flows over a flat plate. The velocity of fluid a…Water Resources · 1 min read
Solved numericalThree cylindrical tubes of 0.5m length are placed co-axially and the central tube is rotated at 5 rpm applying…Water Resources · 1 min read
Solved numericalThe tip of a glass tube with an internal diameter of 2mm is immersed to a depth of 1.5cm into a liquid with a…Water Resources · 1 min read
Solved numericalThe surface tension of water in contact with air is 0.0725 N/m. The pressure outside the droplet of water with…Water Resources · 1 min read
Solved numericalA Newtonian fluid fills the gap between a shaft and a concentric sleeve. When a force of 780N is applied to th…Water Resources · 1 min read
Solved numericalA flat plate 0.3m2 in area moves edgewise through oil between large fixed parallels 10cm apart. If the velocit…Water Resources · 1 min read
Solved numericalA cylinder of 12cm radius rotates concentrically inside a fixed cylinder of 12.6cm radius. Both cylinders are…Water Resources · 1 min read
Solved numericalA shaft 75mm in diameter is fixed axially and rotated inside a sleeve of diameter 75.2mm at 200rpm. The length…Water Resources · 1 min read
Solved numericalA shaft 70mm in diameter is being pushed at a speed of 0.4m/s through a bearing sleeve 70.2mm in diameter and…Water Resources · 2 min read
Solved numericalA square block weighing 1.15KN and 250mm on an edge slides down an incline on a film of oil 6µm thick. Assumin…Water Resources · 1 min read
Solved numericalA piston of weight 90N slides in a lubricated pipe. The clearance between piston and pipe is 0.025mm. If the p…Water Resources · 1 min read
Solved numericalA piston is moving through a cylinder at a speed of 5.7m/s. The film of oil separating the piston from the cyl…Water Resources · 1 min read
Solved numericalThe velocity distribution of a viscous liquid (dynamic viscosity = 9 Poise) flowing over a fixed plate is give…Water Resources · 1 min read
Solved numericalIn a fluid the velocity measured at a distance of 75mm from the boundary is 1.125m/s. The fluid has absolute v…Water Resources · 1 min read
Solved numericalThe surface tension of mercury and water at 60°C are 0.47 N/m and 0.0662 N/m respectively. What capillary heig…Water Resources · 1 min read
Solved numericalAt a depth of 7.5km in the ocean, the pressure is 75Mpa. Assume a specific weight at the surface of 10 KN/m2 a…Water Resources · 1 min read