| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure loss presumption method for a honeycomb structure body for presuming pressure loss by leading a presumption formula capable of simply presuming the pressure loss of the honeycomb structure body at high accuracy. SOLUTION: In the pressure loss presumption method, an element constituting the pressure loss of the honeycomb structure body 1 is virtually divided to four elements of an entrance section element, a central run-up section element, a central development laminar flow section element and an exit section element by internal pressure distribution obtained by a numerical value fluid analysis method; presumption valuesΔP1,ΔP2,ΔP3,ΔP4 of the pressure loss in the respective elements are obtained by first to fourth functions indicated in the following formulae (1)-(4); the thus obtained respective presumption values of the pressure loss are added; thereby, the pressure loss of the honeycomb structure body is presumed. (1)ΔP1=f(OFA,ρ, V), (2)ΔP2=f(OFA, K,ρ, V), (3)ΔP3=f(OFA, k, Re,ρ, V, HD, L), (4)ΔP4=f(OFA,ρ, V). COPYRIGHT: (C)2006,JPO&NCIPI
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