Recent Reseaches

Optimal operation scheduling for water pumping stations

Working on a research entitled "Optimal operation scheduling for pumping stations of Doosti water transmission system to Mashhad city". I developed a hybrid MOPSO-CFNN model (Multiple Objective Particle Swarm Optimization combined with Cascade Forward Neural Network) to address such practical problem. In this large scale optimization problem, there were 288 decision variables which were of continuous type (opening percentage of flow control valves) and binary type (on/off condition of pumps). Both the energy cost and the maintenance cost were considered in the performance function of the optimization problem. The model is capable of reaching the daily optimal operation schedule by any initial conditions (water level in balancing tanks and initial on/off condition of pumps).

Simulating Integrated Water Resources Management (IWRM) using System Dynamics (SD) approach

Working in the field of modeling and simulating water resources challenges and problems. On a recent troubleshooting project, we worked on a 60 million-cubic-meter reservoir called "Tabarak Dam" that remains almost empty after about 10 years of construction.

Effective reservoir operation scenarios using System Dynamics (SD) approach

Some of the most important challenges facing water managers are to increase water supply and reduce its demand. A single systematic method is needed to address both issues, such as the System Dynamics (SD) modeling approach. In this approach all the factors, parameters, and their influences on the problem are considered by causal loops and stock-flow diagrams. The multipurpose Dez Reservoir in southwestern Iran is a good case study for this approach, and we simulated 10 years under differing operation strategies to develop the most appropriate operation policy. A hydrologic time series analysis was conducted to generate simulated inflow to the reservoir, and differing policies, including hedging rules and a "goal-seeking hedge," were applied. By using performance criteria and a new measure entitled "corrected reliability,", the most appropriate scenarios were identified.We found that using the goal-seeking hedge in combination with water demand management offers the best chance for effectively meeting demands and minimizing supply shortages.