摘要
本文对比了含气垫式调压室的引水系统 ,数学模型计算和减压模型试验结果 ,分析了各种减压模型相似因素对试验结果的影响 ,认为引水系统管道内含气量、模型的缩尺效应、气室内空气的状态变化以及减压试验条件等的相似性都会造成物理模型试验结果的误差 .从影响程度而言 ,管道内水体含气量浓度、减压试验条件对于试验结果影响最大 .为此 ,提出应重视这几方面的相似性问题 。
The comparison of results from mathematical model and physical model in vacuum tank for simulation of transient in air cushion surge chamber shows that the similarity laws of various quantities in model test may have influences on the dissimilarity of test results. The air concentration of water, scale effect, state transformation of air in chamber as well as the test conditions are the major factor affecting the reliability of test results. For this reason, the correction of model test result must be made.
出处
《水利学报》
EI
CSCD
北大核心
2000年第7期25-32,共8页
Journal of Hydraulic Engineering
关键词
气垫式调压室
减压模型
数学模型
水击压力
air cushion surge chamber
numerical modeling
water hammer pressure
model test in vacuum tank
