توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Wind–wave hindcasting: wind–rose versus wind time series
اطلاعات انتشار: ششمین همایش بین المللی سواحل، بنادر و سازه های دریایی، سال
تعداد صفحات: ۵
A numerical wave prediction model, based on the concept of wave energy spectrum, is utilized to hindcast the wave conditions in Orumieh Lake. The main objective of this work is to study the influence of temporal variability of wind field input on the characteristics of the predicted wave. Generally there are two approaches in this regard, either for the sake of simplicity and convenient the maximum monthly or yearly wind roses are taken into consideration and considered as wind field data or the time series of wind speed can be considered as input. In addition to the simplicity, the first approach can provide a conservative estimate of the design wave. Here the extent of differences in the results of these approaches is investigated.<\div>

۲A fully mesh–less Lagrangian numerical method for prediction of free water surface
نویسنده(ها): ،
اطلاعات انتشار: کنفرانس بین‌المللی هیدرولیک سدها و سازه‌های رودخانه‌ای، سال
تعداد صفحات: ۸
Euler’s equation is the governing equation of the irrotational flow of ideal fluids; this equation can be considered for the free surface water flow in open channels. The two dimensional Euler’s equation is solved by a mesh–less method of Smooth Particle Hydrodynamics (SPH). A fractional step method has been applied which consist to split each time step in two steps. The numerical method is based on Moving Particle Semi–implicit method (MPS) for simulating incompressible inviscid flows with free surfaces. The motion of each particle is calculated through interactions with neighboring particles covered with the kernel function. The numerical model results are verified with the available experimental results for the collapse of a water column. Agreement with experimental results is excellent. Finally the effect of height of dam and the kernel size on the time the bore is formed is investigated and an estimate for the time of bore formation is presented. The present model is a very useful utility for solving problems in hydraulic and river engineering that an accurate prediction of free water surface is required.<\div>

۳A note on preliminary assessment of far–field runup of Subaerial Landslide Generated Waves
اطلاعات انتشار: هفتمین همایش بین المللی سواحل، بنادر و سازه های دریایی، سال
تعداد صفحات: ۷
Subaerial Landslide Generated Waves (SLGW) have long been a matter of substantial concern due to originating catastrophe along shorelines. Comprehensive review on presented empirical equations for estimating far–field runup of SLGW has undertaken. Using physical scale modelling results, Accuracy of empirical equations is what has been done in the present study. Aiming to bring insight to coastal design, empirical equations have been applied to several real event of SLGW. Empirical equation of Hall and Watts has been presented the best consistency and Synolakis, Hughes and Li and Raichlen empirical equations predicts with the least deviations. The results presented in this paper may be useful for preliminary hazard assessment, where a simple and quick judgment of the resulting wave runup height and locations are required.<\div>

۴Develop of a Fully Nonlinear and Highly Dispersive Wave Equation Set; Analysis of Wave interacting with Varying Bathymetry
نویسنده(ها): ،
اطلاعات انتشار: هفتمین همایش بین المللی سواحل، بنادر و سازه های دریایی، سال
تعداد صفحات: ۸
Extended Boussinesq–type water wave equations are derived in two horizontal dimensions to capture the nonlinearity effects and frequency dispersion of wave in a high accuracy order. A multi–parameter perturbation analysis is applied in several steps to extend the previous second order Boussinesq–type equations in to 6th order for frequency dispersion and consequential order for nonlinearity terms. The presented high–order Boussinesq–type equation is applied in a numerical model to simulate the wave field transformation due to physical processes such as shoaling, refraction and diffraction. The models results are compared with available experimental data which obtained in a laboratory wave flume with varying bottom in Delft Hydraulic Institute and an excellent agreement is obtained.<\div>

۵Laboratory Investigations on Underwater–Landslide–Generated Waves and Run–up
نویسنده(ها): ،
اطلاعات انتشار: هشتمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۷
Underwater–landslide–generated waves were studied in a physical laboratory model. Number of 102 sets of laboratory data with a set–up covering all of the three main stages of generation, propagation, and runup of were collected in a wide range of effective parameters. An empirical method was presented for prediction of impulse wave run–up caused by underwater landslide in a dam reservoir by using the primary information about slide geometry, initial submergence, still water depth, and sidewalls slopes. The presented method was successfully verified using earlier laboratory–based empirical equations and an accuracy of ±15% was obtained. The presented method was also applied in a real case study for a dam reservoir in Iran in which, the impulse wave characteristics were available based on a numerical simulation using FUNWAVE model as a well–validated model. The similar range of accuracy was obtained in predicted values of impulse wave run–up for the studied real case.<\div>
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