立面二维水库水温模型的并行研究

对水库水温进行预测时,传统SIMPLE算法在每个时间步上都要顺序计算流场和压力场,并进行修正,效率较低。结合其压力修正原理,提出对流场和标量方程、系数矩阵与方程求解分别进行并行处理,应用于宽度平均的立面二维水库水温模型,采用Intel四核处理器进行计算,预测结果显示串并行结果完全一致,加速比达1.5,有效地提高了该模型的计算效率。

A Parallelism Study on Laterally Averaged 2-D Reservoir Water Temperature Model

In traditional SIMPLE algorithm procedure,the predicting of reservoir temperature,flow field and pressure field are obtained and rectified at each time step with low efficiency.Based on the theory of SIMPLE pressure correction,this paper proposed a parallel computation scheme in which velocity field and scalar equations are treated side by side,also the coefficient matrix preparation and equation solution are treated side by side.The scheme is applied to the laterally averaged 2D reservoir water temperature model.The parallel result calculated on a Intel 4-core processor is the same with the serial computation,but the parallelism improved the performance efficiently with its speedup index reaching 1.5.