Abstract
The numerical simulation efficiency of large-scale natural gas pipeline network is usually unsatisfactory. In this paper, Graphics Processing Unit (GPU)-accelerated hydraulic simulations for large-scale natural gas pipeline networks are presented. First, based on the Decoupled Implicit Method for Efficient Network Simulation (DIMENS) method, presented in our previous study, a novel two-level parallel simulation process and the corresponding parallel numerical method for hydraulic simulations of natural gas pipeline networks are proposed. Then, the implementation of the two-level parallel simulation in GPU is introduced in detail. Finally, some numerical experiments are provided to test the performance of the proposed method. The results show that the proposed method has notable speedup. For five large-scale pipe networks, compared with the well-known commercial simulation software SPS, the speedup ratio of the proposed method is up to 57.57 with comparable calculation accuracy. It is more inspiring that the proposed method has strong adaptability to the large pipeline networks, the larger the pipeline network is, the larger speedup ratio of the proposed method is. The speedup ratio of the GPU method approximately linearly depends on the total discrete points of the network.
Highlights
Introduction qDensity of gas, kg/m3 hInclination angle of the pipe, rad kFriction coefficientWith the increasing demand for clean energy resources worldwide, natural gas plays a more important role than previously in the energy structure [1, 2]
To further improve the simulation efficiency of natural gas pipeline networks, our Decoupled Implicit Method for Efficient Network Simulation (DIMENS) method is extended to a two-level parallel process, and it is implemented on Graphics Processing Unit (GPU)
In order to implement our DIMENS method on the GPU, the DIMENS method is extended to a novel two-level parallel simulation process and the corresponding parallel numerical method is introduced in detail
Summary
With the increasing demand for clean energy resources worldwide, natural gas plays a more important role than previously in the energy structure [1, 2]. If GPU technology is introduced into the simulation of natural gas pipeline networks, the computational efficiency would be improved substantially. With the combination of proposed DIMENS method with GPU technology, the computational speed of natural gas pipeline networks simulation would be greatly accelerated. To further improve the simulation efficiency of natural gas pipeline networks, our DIMENS method is extended to a two-level parallel process, and it is implemented on GPU. A novel two-level parallel simulation process and the corresponding parallel numerical method for hydraulic simulation of natural gas pipeline networks are proposed. The mathematical model of complex networks, which includes a compressor and a valve can be found in the study [17, 18]
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