摘要
针对井筒热损失常规算法存在的问题,设计了改进算法。该算法以热损失速度作为迭代变量,通过给定合理的迭代初值和变量修正策略,来提高数值计算的稳定性和数值精度。大量数值实验表明,改进算法具有良好的计算稳定性和较高的计算精度。当迭代次数大于300时,计算精度达到以上。
An improved algorithm has been developed according to the problems of the conventional algorithm for wellbore heat loss.This method uses heat loss rate as iteration variable,gives rational initial iteration value and variable correction strategy to improve the stability and accuracy of numerical calculation.A large amount of numerical experiments indicates that the improved algorithm has good computing stability and high accuracy.When iteration times are over 300,the computing accuracy is over.
出处
《特种油气藏》
CAS
CSCD
2006年第3期99-101,共3页
Special Oil & Gas Reservoirs
关键词
井筒热损失
算法
数值实验
稳定性
数值精度
wellbore heat loss
algorithm
numerical experiment
stability
numerical accuracy
