A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling
نویسندگان
چکیده
Shock waves are generated downstream of spillways during flood operations, which have adverse effects on spillway operations. This paper presents the physical model study shock at Mohmand Dam Spillway project, Pakistan. In this study, hydraulic analysis was carried out to investigate its generation mechanism. Different experiments were performed analyze rooster tail a flat chute and examine factors affecting characteristics tail. The results show that wave height is influenced by slope, pier shape, flow depth. Moreover, can be minimized installing semi-elliptical part main pier. Further modifications in geometry extended recommended for elimination wave. Based observed data collected from an empirical equation developed estimate slope chutes (5° 10°).
منابع مشابه
A Mechanism for Dislocation Generation in Shock-wave Deformation
Numerous articles describing the changes in structure and mechanical response of metals and alloys induced by shock waves have been published in the past twenty years (I-3). Increases in the concentration of point (4) and line defects (5), formation of twins (6), martensite (7) and precipitates (8) have been observed in the residual structures. Smith (9) proposed the f i rs t model accounting f...
متن کاملThe effect of the vortex barker and stepped chamber hydraulic flow through morning glory spillway
In recent decades, many dams have been built or are under construction. Due to the high demand for water and soil erosion, increasing the need for dam construction in different regions are quite tangible. In 1900 the number of large dams, did not exceed 50. But in the 1950s to 1986 the number of large dams (over 15 meters), more than 39,000 were counted. The 70s dams has been increasing develop...
متن کاملNumerical Investigation of Pressure Load over Spillway Chutes with Vertical Curvatures
For flow conduits with mild slope and considerably large vertical curvatures the hydrostatic distribution of the pressure may be used for design proposes. However, for the spillway chutes actual pressure load over the steep slope beds with small vertical curvatures may differ from the hydrostatic pressure values. The differences in pressure load on curved bed chutes are mainly because of the ce...
متن کاملPhysical Modeling on Hydraulic Performance of Rectangular Bridge Deck Drains
This paper presents results from an extensive experimental study on hydraulic performance of new rectangular bridge deck drains developed by the Texas Department of Transportation (TxDOT) Bridge Division. It fits between the deck reinforcement with the top of the drain flush with the bridge surface and does not interfere with the structural connection of the bridge rail to the deck. Experiments...
متن کاملInteraction of an oblique shock wave with a pair of parallel vortices: Shock dynamics and mechanism of sound generation
The interaction between an oblique shock wave and a pair of parallel vortices is simulated systematically through solving the two-dimensional, unsteady compressible Navier-Stokes equations using a fifth order weighted essentially nonoscillatory finite difference scheme. The main purpose of this study is to characterize the flow structure and the mechanism of sound generation in the interaction ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hydrology
سال: 2021
ISSN: ['2330-7609', '2330-7617']
DOI: https://doi.org/10.3390/hydrology8040186