scholarly journals Simulation of pulmonary air flow with a subject-specific boundary condition

2010 ◽  
Vol 43 (11) ◽  
pp. 2159-2163 ◽  
Author(s):  
Youbing Yin ◽  
Jiwoong Choi ◽  
Eric A. Hoffman ◽  
Merryn H. Tawhai ◽  
Ching-Long Lin
1966 ◽  
Vol 1 (10) ◽  
pp. 5
Author(s):  
Tokuichi Hamada ◽  
Akihiko Shibayama ◽  
Hajime Kato

This is a note paper of experiment in an air-water experimental waterway. Two cases of the uniform depth of water 50 cm and of the uniform depth of water 15 cm are examined. The boundary condition for air flow is not changed. In a condition of almost the same discharge of air flow on the water surface, the development of wind waves is investigated. The properties of wind waves are slightly different in each case, but the analysis of physical mechanism of the development suggests that almost the same mechanism is active throughout both cases. Stillmore the portion of tangential stress, which is apparently transfered to wave momentum, is numerically obtained, and it is not so different in both cases of depth of water.


1976 ◽  
Vol 26 (3) ◽  
pp. 333-349 ◽  
Author(s):  
V. Molony ◽  
W. Graf ◽  
P. Scheid

Author(s):  
Getu Hailu ◽  
TingTing Yang ◽  
Andreas K. Athienitis ◽  
Alan S. Fung

This paper presents CFD study of a BIPV/T system with forced convection. Air was circulated behind PV arrays and used as a coolant with various air flow rates (air velocities) to recover the thermal energy that could be used for space and/or domestic water heating. Turbulent flows were considered with Reynolds number ranging from 5199 to 9392. COMSOL Multiphysics finite element analysis (FEA) software was used to develop CFD models for the BIPV/T system using: (a) measured temperature profile at different flow rates, and (b) measured solar radiation as boundary condition. Predictions of the air temperature profiles inside the air flow channel and the backside of the PV were obtained and compared to experimentally obtained temperature profiles using both boundary conditions. In general, better agreement with the experimentally measured temperature profiles was obtained when the measured solar radiation was used as a boundary condition. The results of the study can be used to establish relationships between the average/local convective heat transfer coefficients and air flow velocity. The relationships obtained will also be useful for developing correlations and simple mathematical models that facilitate the design and optimization of different parts of the BIPV/T system, such as inlet regions.


1974 ◽  
Vol 30 (1) ◽  
pp. 32-41 ◽  
Author(s):  
E. J. Butler ◽  
B. J. Egan
Keyword(s):  

2001 ◽  
Vol 22 (5) ◽  
pp. 35-40 ◽  
Author(s):  
D. C. Look Jr ◽  
Arvind Krishnan

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