A Simulation Model To Determine The Capacity Of A Y-type Waterway Intersection In Port Of Panjin

In this thesis,Arena software was used to simulate a complex system,which contains traffic rules,a tidal window,weather conditions,and different fleet types.We have determined the capacity of a Y-type waterway intersection with a sailing speed of 10 knots for the Panjin seaport in China.Moreover,we chose a sailing speed of 11 knots,which gives a safe squat value at high tide level whose cumulative frequency for channel accessibility is larger than or equal to 80%.The results show that the capacity of the waterway was reduced with a sailing speed of 11 knots,because of the necessity to wait some time to meet a high tide level.One of the most important goals of the port authority is assessing the port service level.In general,the waiting time/service time ratio was used to determine the efficiency of the port.Due to the stochastic operations in the port,Arena simulation was selected to simulate the real complex port system.In this thesis,we have studied the main access channel with eastern and western branches.After running the simulation model for one year,we calculated the average waiting time/average service time ratio for each fleet.The results show that all fleets arriving at the port have an acceptable percentage of waiting time,except for crude oil vessels.This is because the crude oil vessels need to wait for a longer amount of time to meet the higher tide level.After rebuilding the simulation model to study the possibility of sailing without waiting for the tidal window,and we studying this effect on the average waiting time/average service time ratio,the results show that the average waiting time/average service time ratio decreased.As for other ship types in our case study,the Panjin port in China was also acceptable,and there were no delays due to traffic conditions or lack of berths.