Seyed Hamed Meraji

• Ph.D
• Professor (Assistant) at Persian Gulf University

آب یکی از مهمترین سرمایههای ملی است که جایگزینی برای آن وجود ندارد و در حال حاضر صرفهجویی و استفاده مناسب از منابع آبی ضروری میبا شد. باتوجه به هزینه بالای سامانههای تأمین و توزیع آب و همچنین و ضعیت خاص اقلیمی ک شور ما، ضرورت و اهمیت طراحی اقت صادی و بهینه نمودن این شبکهها به گونه ای که بتوان با صرف حداقل هزینه، کلیه محدودیتهای موردنظر در شبکه را ت...

The evaluation of pavements being utilized using falling weight deflectometer (FWD) is one of the most important components of the pavement management system in many countries. The computation of pavement layer properties to estimate the remaining life of the pavement and also pavement maintenance has always been of interest to road pavement resear...

This paper proposes a methodology which is composed of differential quadrature element method (DQEM) and Newmark’s time integration scheme for response analysis of viscoelastic pavement under vehicular loads. An incremental form of Boltzmann’s correspondence principle together with the generalised Maxwell–Wiechert model is employed to simulate the...

Analysis of road pavements responses such displacements, strains and stresses resulting from imposed impulsive loads, is one of the most important issues in pavement design. Various methods such as finite element, boundary element etc. can be used for analysis of this problem, but, as in all matters, the main goal is to reach high accuracy while sp...

Since a nonlinear partial differential equation was developed by Boussinesq based on Darcy’s law and the Dupuit-Forchheimer assumption, it has played an essential role in the development of simulation models for the solution of various flow problems in porous media. To solve Boussinesq’s equation, both analytical and numerical solutions, such as fi...

In this paper, an approach to improve the application of the differential quadrature method for the solution of Navier–Stokes equations is presented. In using the conventional differential quadrature method for solving Navier–Stokes equations, difficulties such as boundary conditions' implementation, generation of an ill conditioned set of linear e...

Since a nonlinear partial differential equation was developed by Boussinesq based on Darcy's law and the Dupuit-Forchheimer assumption, it has played an essential role in the development of simulation models for the solution of various flow problems in porous media. To solve Boussinesq's equation, both analytical and numerical solutions, such as fi...

The particle swarm optimization (PSO) method and the genetic algorithm (GA) were used to derive formulas for determining the velocity and concentration profiles in sheet flows. Specifically, these evolutionary optimization algorithms were used in conjunction with experimental data to determine coefficients and identify parameters for preselected fo...

Assessing the water quality status for special use is the main objective of any water quality monitoring studies. The water quality index (WQI) is a mathematical instrument used to transform large quantities of water quality data into a single number which represents the water quality level. In fact, developing WQI in an area is a fundamental proce...

This paper employs the Particle Swarm Optimization (PSO) method to solve the problem of the optimal design of cascade stilling basins. PSO is a relatively recent heuristic search method whose mechanism is inspired by the swarming or collaborative behavior of biological populations. The objective of this research is to minimize the total constructio...

This paper employs the particle swarm optimization (PSO) method to solve the problem of the optimal design of cascade stilling basins. PSO is a relatively recent heuristic search method whose mechanism is inspired by the swarming or collaborative behavior of biological populations. The objective of this research is to minimize the total constructio...

The Particle Swarm Optimization (PSO) method and the Genetic Algorithm (GA) were used to derive formulas for determining the velocity and concentration profiles in sheet flows. The objective function, defined as the absolute differences between observed and predicted values of sediment velocity and concentration, was minimized by adjusting the valu...