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To reduce the overflow of the wastewater and high expense caused by redundant arrangement of the stations of pumps in the urban drainage system, a hybrid logistic optimization model is proposed to choose the locations of pump stations and the corresponding optimal control algorithm is also developed in this paper. The inflow in the conduit from rainfall is estimated based on rainfall-runoff model...
This paper presents the control vector parametrization (CVP) method to solve the optimal control problem of irrigation canals with boundary constraints of the gate openings. The mathematical model of a multi-pool cascaded canal is built based on the Saint-Venant equations. The formulation of the optimal control problem with the gate opening boundary constraints of the cascaded irrigation canals is...
To reduce wastewater overflow and high power cost caused by unreasonably operating pump device in urban drainage system, a pump performance-based energy optimization strategy is proposed. A mathematical model is built based on the typical topological structure of urban drainage systems, and the calculation equations for sewerage inflow, outflow and storage condition of relevant pumping stations are...
Finite element analysis for large-scale complicated structure such as aluminum reduction cell makes higher demand on memory capacity and calculation speed, resulting in failure or inefficiency of traditional serial computation for such large-scale problems constantly. The parallelization of Jacobi preconditioned conjugate gradient (PCG) algorithm and boundary conditions processing is discussed based...
The flow control problem of urban sewer networks to minimize overflows is cast in the framework of model predictive control. The predictive control algorithm is developed based on the discrete maximum principle, employing nonlinear constrained optimal control concepts. By introducing element models, the mathematical model of a sewer network can be formulated. Since the function of the reservoir overflow...
Considering the flow control of large-scale sewer networks to minimize overflows, a control algorithm based on particle swarm optimization with mutation operator (MPSO) is proposed in this paper to achieve optimal operations of reservoir gates. By introducing element models, the mathematical model of whole sewer network can be formulated. The algorithm is applied to solve the optimization problem...
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