Theoretical analysis of phase-lag in low frequency laminar pulsating flow

被引：13

作者：

Chang, Wang ^{[1
]}

Pu-Zhen, Gao ^{[1
]}

Si-Chao, Tan ^{[1
]}

Chao, Xu ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Nucl Sci & Technol, Key Discipline Lab Nucl Safety & Simulat Technol, Heilongfiang 150001, Peoples R China

来源：

PROGRESS IN NUCLEAR ENERGY | 2012年 / 58卷

基金：

中国国家自然科学基金;

关键词：

Phase-lag; Pulsating laminar flow; Low frequency; NATURAL CIRCULATION FLOW; HEAT-TRANSFER; TUBE; GRADIENT; VELOCITY;

D O I：

10.1016/j.pnucene.2012.02.004

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The phase-lag between pressure gradient and flow rate in laminar pulsating flow in circular pipes and parallel-plate channels are studied theoretically. It is found that the phase-lag between pressure gradient and flow rate in low frequency (f < 0.5 Hz) pulsating laminar flow exists both in circular pipes and parallel-plate channels. The phase-lag increases with the increase of pulsating frequency, radius of the pipe and the height of the channel, however, it decreases with increase of the fluid viscosity. In addition, the phase-lag is not related to the pulsating amplitude. The analytical results show that velocity radial distribution does not affected by the low frequency pulsation and the value of phase-lag depends on the ratio of the acceleration pressure drop to the total pressure drop. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：45 / 51

页数：7

共 15 条

[1]

[Anonymous], INT J HEAT MASS TRAN

[2]

[Anonymous], ANN NUCL ENERGY

[3]

[Anonymous], CHEM ENG SCI

[4]

[Anonymous], PROG NUCL ENERG