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多种水轮机模型的仿真对比分析 被引量:4
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作者 陈上 陈金保 +3 位作者 王安林 丘涛基 陈齐灯 肖志怀 《中国农村水利水电》 北大核心 2021年第11期203-208,共6页
针对水轮机结构复杂、建模方法多样,研究分析了理想水轮机模型、分段线性化模型、神经网络模型和插值法水轮机模型的不同建模方法,对比分析各模型仿真时间、水轮机流量、力矩、水头等参数仿真输出,结果表明:采用理想水轮机模型和分段线... 针对水轮机结构复杂、建模方法多样,研究分析了理想水轮机模型、分段线性化模型、神经网络模型和插值法水轮机模型的不同建模方法,对比分析各模型仿真时间、水轮机流量、力矩、水头等参数仿真输出,结果表明:采用理想水轮机模型和分段线性化模型时仿真时间短、建模过程简单,小波动工况下能较为精确地进行动态过程仿真,但进行大波动工况计算需要调整模型参数;插值法水轮机模型能对各个工况的静态过程进行精确仿真,但在动态波动瞬间仿真存在误差比另外3种方法稍大;神经网络模型仿真动态过程误差相对较小,但建模过程复杂、仿真时间较长。 展开更多
关键词 水轮机 神经网络 分段线性化 二元三次插值 仿真模型
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A NUMERICAL SIMULATION OF CHANNEL RESERVOIRS CONTAINING VERTICAL AND HORIZONTAL WELLS 被引量:3
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作者 LIU Fu-ping wang Xu-song +1 位作者 wang Jun wang an-ling 《Journal of Hydrodynamics》 SCIE EI CSCD 2006年第5期527-536,共10页
In this article, the bounding surfaces of channels were modeled by Bayesian stochastic simulation, which is a boundary-valued problem with observed valley erosion thickness at the locations of wells (hard data). In ... In this article, the bounding surfaces of channels were modeled by Bayesian stochastic simulation, which is a boundary-valued problem with observed valley erosion thickness at the locations of wells (hard data). In this study, it was assumed that the cross-section of the channel shows a parabolic shape, and the case that the vertical well and the horizontal well are located in the channel was considered. Peaceman's equations were modified to simultaneously solve both the vertical well problem and the horizontal well problem. In porous media, a 3D fluid equation was solved with iteration in the spatial domain, which had channels, vertical wells, and horizontal wells. As an example, the spatial distributions of pressure were calculated for channel reservoirs containing vertical and horizontal wells. 展开更多
关键词 fluid equations in porous media POROSITY channel reservoirs numerical simulation heterogeneous media hrizontal well vertical well
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