: ..,
..,
..
:
: 122
:
: 2026
: .., .., .. // . - 2026. - . 122. - .25-51.
: , , ,
(.): mathematical modeling, queueing networks, marine coal terminal, simulation modeling
: - , , , , (, , ), . . , , , . : ; , ; 蠖 ; . , , . 27 . . , , .
(.): The article aims to develop a novel approach to the mathematical modeling and computer simulation of a production and transshipment complex. The complex performs the temporary storage of coal arriving via rail and sea, its processing (crushing, drying, and blending of different grades), transshipment, and subsequent shipment to other enterprises. We employ a queuing network as a mathematical tool, which allows us to use separate group arrival flows, including non-stationary ones, to describe cargo flows from different transport modes. We utilize various types of queuing systems (QSs) to model the elements and subsystems: a multi-channel queuing system with no queue for the anchorage area; multi-channel QSs with a limited queue for the railway infrastructure, production lines, and warehouses; single-channel QSs with a variable queue length for the berths and internal rail transport; and single-channel QSs with deterministic service time for the conveyor systems. The structural and parametric identification of the model is performed for Cam Pha port, a key specialized port in Vietnam that processes and ships coal to domestic thermal power plants, as well as for export. The resulting stochastic model is a queuing network with 2 incoming request flows and 27 nodes. We implement the model using a simulation and conduct three computational experiments with different model parameters. The results allow us to evaluate the current capacity of Cam Pha port, determine its maximum throughput, and identify system bottlenecks.
PDF
: 52, : 18, : 16.