# Cavitation from Surface Irregularities in High Velocity

*Irregularities in flow surfaces of hydraulic structures operating at high velocities have been the source of serious damage by cavitation. The types of surfaces often encountered in construction...*

Cavity Expansion in Sands with Curved Envelopes

*The effect of a curved Mohr-Coulomb failure envelope on the bearing capacity of deep foundations in sands is considered by obtaining solutions to expansion of cavity problems. An analytic...*

Unsteady Stratified Circulation in a Cavity

*A transient two-dimensional model with idealized topography (i.e., cross section of a rectangular lake) is examined using numerical models. The primary results define the behavior of the...*

Predicting Cavitation in Sudden Enlargements

*In recent years incipient, critical, and choking cavitation levels have been introduced as design criteria for orifices and valves in pipelines. Recent studies have evaluated a fourth...*

Cavitation Control by Aeration of High-Velocity Jets

*To prevent cavitation erosion, air may be introduced along the underside and sides of a jet before the jet comes in contact with downstream concrete surfaces. Model studies of chute offsets,...*

Failures in Limestones in Humid Subtropics

*Limestones and similar carbonate rocks comprise about 10% of the world's surface rocks. Solution of porous limestones creates networks of small cavities from less than an...*

Convective Transport Finite Element Analog

*A finite element method for solving two-dimensional steady convective heat transfer problems is presented and applied to three test cases for verification. The fully nonlinear momentum...*

Flow-Induced Forces on Protruding Walls

*A two-dimensional wall of variable thickness, protruding from a plane boundary, may be regarded as a basic geometrical configuration encountered in many instances of flow-induced structural...*

Gas Release During Transient Cavitation in Pipes

*Some applications are presented of a mathematical model concerning water hammer and release of dissolved gas in pipelines in the case where the pressure drops to the vapor pressure of...*

Cavitation and Size Scale Effects for Orifices

*Cavitation data are presented for circular sharp-edged orifices which identify incipient, critical, moderate, heavy, and choking cavitation. The experimental program included pipe sizes...*

Cavitation Scale Effects for Valves

*Proper use of experimental cavitation data for valves requires adjustments for scale effects including the influence of valve size and operating pressure. Incipient and critical cavitation...*

Cavitation in Butterfly Valves

*Tests made at Colorado State University have resulted in a generalization of cavitation data making them useful in developing pipeline designs utilizing butterfly valves as controls. Related...*

Analytical Study of Pressurized Elliptical Cavities

Cavitation Characteristics of 18-inch Butterfly Valve

Cavitation in High-Head Conduit Control Dissipators

*The wasting of water from high-head hydraulic structures through a closed conduit requires an economical control and energy dissipator device which will safely contain the potentially...*

Expansion of Cavities in Infinite Soil Mass

*A general solution is presented of the problem of expansion of spherical and cylindrical cavities in an infinite soil mass. The soil is assumed to behave as an ideal elastic-plastic solid,...*

Pressure Buckling of Ring Encased in Cavity

*The buckling of a ring subjected to external pressure but supported by a rigid cavity wall is investigated using small deflection linear theory. It is assumed that the cavity wall moves...*

Cavitation in Horizontal Pipelines due to Water Hammer

*Some effects of water hammer in horizontal pipelines are investigated for the case where the pressure reaches vapor pressure. A theory based on the presence of nuclei is set up, but fails...*

Choking and Supercavitating Valves

*The occurrence of choking flow or supercavitation downstream of valves can result in unsatisfactory performance. A valve chokes when the mean pressure immediately downstream drops to vapor...*

Cavitation Parameters for Outlet Valves

*Testing of regulating valves to determine their flow and cavitation characteristics in order to make a practical and economic selection of valves for use in hydraulics control is described....*

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