# Large-Scale Roughness in Open-Channel Flow

*A new method of predicting resistance to flow in open channels with large roughness elements is proposed. The roughness elements investigated consisted of 6-in. and 3.75-in. cubes; these...*

Theory of Water Filtration

*The Kozeny equation of laminar flow through granular materials is extended to the transition region by means of a chart of the friction factor versus the Reynolds number. A chart of the...*

Film Flow Along a Vertical Cylinder

*A mathematical procedure is presented for the case of flow of a thin liquid film along the wall of a vertical cylinder. Surface tension forces are neglected. The velocity function is assumed...*

Viscous and Boundary Effects on Virtual Mass

*The virtual mass of a sphere oscillating in a fluid filling a fixed concentric spherical shell was determined experimentally for seven ratios of sphere diameter to shell diameter. These...*

Aeroelastic Vibration of a Steel Arch

*The cause of vibration of a building with an unusual frontal profile is found to be the vortex shedding. Of the seven corrective measures considered, only the increase of the number of...*

Boundary Flow Along a Circular Cylinder

*The Karman-Prandtl mixing-length theory for fluid flow over a flat surface with a laminar sublayer near the boundary is adapted to the flow along an infinite circular cylinder on the supposition...*

Wave Action at Spillways

*The height of progressive irregular waves observed to exist downstream from spillways was found to have a normal distribution. The significant wave height depended on Froude number, downstream...*

Sliding of Composite-Type Breakwaters by Breaking Waves

*In order to prove that experimental results would be applicable to prototype conditions with reasonable accuracy according to Froude's law of similarity and that the sliding...*

Groups of Vertical Cylinders Oscillating in Water

*Drag, lift, and moment on twenty-four parallel vertical 1/2-in. cylinders oscillating with 13-in. amplitude in water were measured in a laboratory tank 5.5 ft by 16 ft. A comparison, D*

_{o},...Manning Roughness Factors for Concrete Sewer Pipe

*Study of roughness characteristics of high quality concrete pipe of 6 in., 8 in., and 12 in. diam; full flow conditions were determined with just slight pressure head existing on lines;...*

Study of Scour Around Spur-Dikes

*Investigation was conducted in 2 ft wide by 25 ft long nonrecirculating flume; effect of flow, spur-dike, and sediment characteristics on maximum scour depth; it was found that Froude...*

Irrotational Motion of Two Fluid Strata towards a Line Sink

*Flow of two fluids of different density towards line sink located in bottom corner of rectangular configuration with upstream and extending to infinity, was studied by relaxation techniques;...*

Drag and Lift on Spheres within Cylindrical Tubes

*Method for evaluating lift and drag forces that are exerted by moving fluid on spherical particle resting on bottom of cylindrical tube; experimental data presented show variation in lift...*

Models Primarily Dependent on the Reynolds Number

*Design, construction, and operation of models of closed-conduit fluid systems, and interpretation of test data; viscous and inertia forces in flowing fluids of such models, and hence Reynolds...*

Models Primarily Dependent on the Reynolds Number

*Design, construction, and operation of models of closed-conduit fluid systems, and interpretation of test data; viscous and inertia forces in flowing fluids of such models, and hence Reynolds...*

Drag and Lift on Spheres within Cylindrical Tubes

*Method for evaluating lift and drag forces that are exerted by moving fluid on spherical particle resting on bottom of cylindrical tube; experimental data presented show variation in lift...*

Irrotational Motion of Two Fluid Strata Towards a Line Sink

*Flow of two fluids of different density towards line sink located in bottom corner of rectangular configuration with upstream and extending to infinity, was studied by relaxation techniques;...*

Absorption of Oxygen from Air Bubbles in Water

*Correlations developed to define absorption; relationships developed between liquid film coefficient, K*

_{L}and Reynolds and Schmidt Numbers at liquid...Stratified Flow into a Line Sink

*Study of discharge of stratified fluid through horizontal slot at end of channel; experiments show that when densimetric Froude number is less than 0.28 flow pattern is divided into two...*

Turbulence Characteristics of the Hydraulic Jump

*Hot wire measurements of turbulence in air flow model of hydraulic jump described for Froude numbers of 2, 4, and 6; results analyzed and interpreted in light of momentum and energy integrals....*

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