TY - JOUR
T1 - Quantifying acceptable mesh dependencies for computational investigations of airflows within rooms
AU - Russell, M.
AU - Surendran, P.N.
AU - Probert, S.D.
N1 - Original article can be found at: http://www.sciencedirect.com/science/journal/03062619 Copyright Elsevier Ltd. [Full text of this article is not available in the UHRA]
PY - 2002
Y1 - 2002
N2 - Ignorance of mesh dependency can sometimes be an embarrassment in numerical calculations. Mesh structures need to be developed to eradicate mesh dependency without compromising the finite computing resource and/or incurring large computational expense. For the inexperienced, mesh deployment often degenerates into a time-consuming iterative procedure. To understand mesh influences, different mesh-structures have been applied to two simple, yet typical, room–air–ventilation configurations. The predictions, using various mesh regimes, have been compared with a datum result set: marks have been awarded according to the closeness of comparison to mesh-independent predictions. This mark, i.e. the ‘Mesh Independence Number’ (MIN), is a numerical indicator of the closeness to achieving a mesh in-dependent solution. A relationship for the MIN versus number of nodes is presented together with relationships for the average values of the air-velocity components. In many instances, high correlation-coefficients are established which suggests that this MIN methodology could reduce the need for iterative time-consuming mesh-dependency studies.
AB - Ignorance of mesh dependency can sometimes be an embarrassment in numerical calculations. Mesh structures need to be developed to eradicate mesh dependency without compromising the finite computing resource and/or incurring large computational expense. For the inexperienced, mesh deployment often degenerates into a time-consuming iterative procedure. To understand mesh influences, different mesh-structures have been applied to two simple, yet typical, room–air–ventilation configurations. The predictions, using various mesh regimes, have been compared with a datum result set: marks have been awarded according to the closeness of comparison to mesh-independent predictions. This mark, i.e. the ‘Mesh Independence Number’ (MIN), is a numerical indicator of the closeness to achieving a mesh in-dependent solution. A relationship for the MIN versus number of nodes is presented together with relationships for the average values of the air-velocity components. In many instances, high correlation-coefficients are established which suggests that this MIN methodology could reduce the need for iterative time-consuming mesh-dependency studies.
U2 - 10.1016/S0306-2619(02)00012-0
DO - 10.1016/S0306-2619(02)00012-0
M3 - Article
SN - 0306-2619
VL - 72
SP - 409
EP - 425
JO - Applied Energy
JF - Applied Energy
IS - 1
ER -