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RISExperimental Study of Turbulent Fluctuations in Hydraulic Jumps
Publisher: American Society of Civil Engineers
Abstract: In an open channel, the transformation from a supercritical flow into a subcritical flow is a rapidly varied flow with large turbulent fluctuations, intense air entrainment, and substantial energy dissipation called a ...
Experimental Study on Moisture Migration in Unsaturated Loess under Effect of Temperature
Publisher: American Society of Civil Engineers
Abstract: In this paper, moisture migration in loess considering temperature effect is studied by tests on unsaturated loess samples with different densities and initial moisture contents. Test results reveal that obvious changes ...
Performance of Intrusive Phase-Detection Probe with Large Sensor Size in Air-Water Flow Measurement and Application to Prototype Hydraulic Jump Study
Publisher: ASCE
Abstract: A major challenge of prototype air-water flow measurement is the limited endurance of fragile phase-detection needle sensors in a high-momentum flow with risks of debris damage and particulate erosion. In the present study, ...
Transverse Nonuniformity of Air–Water Flow and Lateral Wall Effects in Quasi-Two-Dimensional Hydraulic Jump
Publisher: ASCE
Abstract: Flow field characterization in high-aerated flows often involves flow imaging techniques through transparent sidewalls, and the results may be subject to sidewall effects and thus differ from the central flow behaviors. ...
Modified Bottom Air Entrainment Estimate by Chute Offset Aerator
Publisher: ASCE
Abstract: Offset aerators are a common design for the prevention of cavitation damage to chute spillways. The aeration capacity is linked to the offset air cavity length and jet velocity. Observations suggest that air entrainment ...
Experimental and Numerical Analysis of Steel-Block Shear Connectors in Assembled Monolithic Steel–Concrete Composite Beams
Publisher: American Society of Civil Engineers
Abstract: To study the shear behavior of the steel-block shear connector (SBSC) welded on a steel beam, eight push-out experiments were conducted, including two specimens with cast-in-place (CIP) concrete decks and six specimens ...
Roller Characteristics of Preaerated High-Froude-Number Hydraulic Jumps
Publisher: ASCE
Abstract: A hydraulic jump in a stilling basin at the base of spillway is typically characterized by preaerated inflow conditions. This paper presents an experimental study of high-Froude-number hydraulic jumps with different ...
Permeability Anisotropy of Loess under Influence of Dry Density and Freeze–Thaw Cycles
Publisher: American Society of Civil Engineers
Abstract: Loess, a kind of special soil, is widespread in the seasonally frozen soil regions and featured with well-developed joints and pore structure. Notwithstanding, the permeability anisotropy nature of loess can badly impact ...
Estimating Earthquake-Induced Displacement Responses of Building Structures Using Time-Varying Model and Limited Acceleration Data
Publisher: ASCE
Abstract: This paper presents a time-varying model-based method for estimating earthquake-induced displacement responses of building structures using limited acceleration data. First, a time-varying model which considers the variability ...