Numerical investigation of the effect of inlet subcooling on flow instabilities in a parallel channel natural circulation boiling system

2019 ◽  
Vol 114 ◽  
pp. 13-21 ◽  
Author(s):  
Kiran Saikia ◽  
Manmohan Pandey ◽  
Dipankar N. Basu
Keyword(s):  
Numerical Investigation ◽  
Natural Circulation ◽  
Flow Instabilities ◽  
Parallel Channel

PARALLEL-CHANNEL INSTABILITY IN NATURAL CIRCULATION SYSTEM

2006 ◽  
Vol 18 (4) ◽  
pp. 305-333 ◽  
Author(s):  
Mio Hirayama ◽  
Hisashi Umekawa ◽  
Mamoru Ozawa
Keyword(s):  
Natural Circulation ◽  
Circulation System ◽  
Parallel Channel

scholarly journals Numerical Investigation of flow instabilities in Speed No-Load operation of a Bulb turbine

2021 ◽  
Vol 774 (1) ◽  
pp. 012115
Author(s):  
K Yamamoto ◽  
M Roubaty ◽  
M Morisod ◽  
M Coulaud ◽  
S Houde
Keyword(s):  
Numerical Investigation ◽  
Flow Instabilities ◽  
Bulb Turbine

Description of Typical Flow Instabilities in the Natural Circulation System

2002 ◽  
Author(s):  
Shengyao Jiang ◽  
Xingtuan Yang ◽  
Youjie Zhang
Keyword(s):  
Natural Circulation ◽  
Great Influence ◽  
Operating Conditions ◽  
Boiling Water ◽  
Flow Instabilities ◽  
Circulation System ◽  
Boiling Water Reactor ◽  
Primary Loop ◽  
Water Reactor ◽  
Test Loop

The experiments were performed on the test loop HRTL-5, which simulates geometry and system design of the 5-MW Nuclear Heating Reactor developed by the Institute of Nuclear Energy Technology, Tsinghua University. Because of the difference of the geometry design and operating conditions between the heating reactor and the boiling water reactor, the flow behavior presents great differences too, some of which haven’t been deeply studied so far. Results show that in heating reactor, sub-cooled boiling, condensation and flashing play an important role on the flow instabilities of the natural circulation system. Correspondingly, geysering instability, flashing instability, and flow excursion are the very typical instabilities occurring in the primary loop of HRTL-5, which are different from those in boiling water reactor conditions. The compressibility of the steam space on the top of the primary loop has also great influence on the instability of the natural circulation system.

Numerical investigation of viscous flow instabilities in multiphase heterogeneous porous media

2019 ◽  
Vol 130 ◽  
pp. 46-65 ◽  
Author(s):  
K. Christou ◽  
W.C. Radünz ◽  
B. Lashore ◽  
F.B.S. de Oliveira ◽  
J.L.M.A. Gomes
Keyword(s):  
Porous Media ◽  
Viscous Flow ◽  
Numerical Investigation ◽  
Heterogeneous Porous Media ◽  
Flow Instabilities
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