Journal of Hydraulic Engineering (J HYDRAUL ENG-ASCE )

Publisher: American Society of Civil Engineers; American Society of Civil Engineers. Hydraulics Division, American Society of Civil Engineers

Description

A central forum for the dissemination of original work, this journal describes the analyses and solutions of problems in hydraulic engineering, hydrology, and water resources. Contributors emphasize concepts, methods, techniques, and results that advance knowledge, or are suitable for general application and use in the hydraulic engineering profession. Technical papers, notes, and professional discussions highlight hydraulic engineering issues ranging from short-term fluctuations in ground water to moment models of nonuniform channel-bend flow. On occasion, the results of any technical, economic, or social facet of the use and conservation of water as a natural resource are published.

  • Impact factor
    1.28
    Show impact factor history
     
    Impact factor
  • 5-year impact
    1.88
  • Cited half-life
    0.00
  • Immediacy index
    0.20
  • Eigenfactor
    0.01
  • Article influence
    0.70
  • Website
    Journal of Hydraulic Engineering website
  • Other titles
    Journal of hydraulic engineering (New York, N.Y.), Journal of hydraulic engineering, Hydraulic engineering, A.S.C.E. hydraulic engineering, ASCE hydraulic engineering, ASCE journal of hydraulic engineering
  • ISSN
    0733-9429
  • OCLC
    8672558
  • Material type
    Periodical, Internet resource
  • Document type
    Journal / Magazine / Newspaper, Internet Resource

Publisher details

American Society of Civil Engineers

  • Pre-print
    • Archiving status unclear
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Publisher's version/PDF cannot be used, except on Intranet
    • Internet site or institutional repository
    • Must link to publisher version at ASCE Civil Engineering Database(http://cedb.asce.org)
    • Publisher copyright and source must be acknowledged
  • Classification
    ​ blue

Publications in this journal

  • Journal of Hydraulic Engineering 10/2014;
  • Journal of Hydraulic Engineering 07/2014;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Vertical slot fishways are a type of fish pass of wide operating range that allow fish to move across obstacles in rivers. This study aims to model the performance of these structures, under uniform and nonuniform flow conditions, using discharge coefficients involving the downstream water level together with a logical algorithm. This will allow an explanation of the hydraulic behavior of this type of fishway under tailwater levels and flow variations on rivers. Two vertical slot fishways located in Duero River (North-Central Spain), subject to different hydraulic conditions, were studied for the validation of the proposed formulation. The observed values are consistent with the predicted results and, among others, demonstrate the importance of including variables that consider downstream water level. Consequently, the proposed discharge coefficients together with the algorithm have resulted in a method that enables the improvement of the performance of both existing and future vertical slot fishways. This will have major implications in real-life scenarios in which uniform operation conditions are rarely achieved.
    Journal of Hydraulic Engineering 07/2014;
  • Journal of Hydraulic Engineering 06/2014; 140.
  • [Show abstract] [Hide abstract]
    ABSTRACT: A new and efficient variant of the method of characteristics for solving the quasi-two-dimensional water hammer model is proposed. The method requires the fully implicit discretization scheme for radial velocity, to eliminate this velocity from the equations for axial velocity and piezometric head. As the radial velocity is typically outside the scope of interest, the computation time is reduced by omitting its calculation. The proposed method is compared with an existing method by means of two water hammer benchmark tests. The results of the two methods practically match, but the proposed method requires approximately 50% less CPU time for the laminar flow test, and 30% for the turbulent one. In addition, the numerical accuracy of four implicit interpolation schemes is compared for the case of laminar flow. The obtained results suggest that the required fully implicit discretization is not a significant limitation of the proposed method. The new method offers high numerical efficiency, while retaining all merits of the existing method. Read More: http://ascelibrary.org/doi/abs/10.1061/(ASCE)HY.1943-7900.0000839
    Journal of Hydraulic Engineering 06/2014; 140(6).
  • Journal of Hydraulic Engineering 05/2014; 140(5).
  • Journal of Hydraulic Engineering. 04/2014;
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper focuses on pressurized wavefront behavior and an analysis of trapped air pockets. Flow behavior, trapped air-pocket pressure, and different pressurized wavefront shapes in addition to their propagation conditions were investigated to improve modeling of mixed flows with trapped air pockets in stormwater systems. Pipe slopes, inflow, and reservoir water-levels were considered in an experimental analysis of the initiation, propagation of the wavefront, and flow behavior. Results show that the formation, propagation, and stability of the wavefront shape are highly dependent on the reservoir water-level and pipe slope. Pressurized wavefronts take on different shapes depending on manhole water level, pipe slope, and air pressure. The shape of the pressurized wavefront is sharper when the initial pipe depth y∗ is set between 0.5 and 0.85. With low inflow, the pipe-filling phase is progressive and is accompanied by undulations with stronger curvature and short length on the free-surface flow zone. For mild slopes with low flow-rates, the pipe-filling process is achieved through progressive undulations with trapped air pockets. A two-phase numerical model is developed, combining the method of characteristics (MOCs) for solving the free-surface flow conditions, the rigid column for the pressurized flow conditions, and the ideal gas law. Numerical results are achieved by applying of the continuity equation taking into account any type of flow regime in the interface vicinities. The four equations that consider the direction of wavefront propagation and the type of pressurized or depressurized wavefront are then taken into account. In these equations, a minimum distance between the moving wavefront and the considered cross section on the fixed grid is imposed. Compliance with this minimum distance allows avoiding numerical instabilities that may affect the stability of the model. Good agreement is obtained between numerical and experimental results. This agreement demonstrates that pressure variations due to pressurized waves combined with trapped air-pockets can be reproduced by implementing the numerical model as a shock-fitting approach. Read More: http://ascelibrary.org/doi/abs/10.1061/(ASCE)HY.1943-7900.0000827
    Journal of Hydraulic Engineering 03/2014; Vol. 140(Issue 3):300–312.
  • [Show abstract] [Hide abstract]
    ABSTRACT: A formula is derived for the prediction of the average velocity of a solitary coarse grain moving over a rigid flat channel bed. To verify the theoretical consideration, data collected in the present study and reported in the literature (811 sets in total) are analyzed for typical bed roughness configurations. The results show significant improvements in the prediction of solitary grain velocity for both smooth- and rough-bed conditions in comparison with other formulas available in the literature. From the proposed formula, it follows that for rough-bed conditions, the dimensionless grain velocity depends on the Shields number and also the ratio of bed-roughness height to the grain diameter. The present study is limited to motion of solitary grains, but the result obtained implies that bed-load transport rate could be also affected by the equivalent bed-roughness height even under mobile bed conditions and such effects may become pronounced for nonuniform sediments.
    Journal of Hydraulic Engineering 02/2014; 140(6):04014015.