Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

Personal portfolio

MATHEMATICAL MODEL DETECTING LEAKS LOCALIZATION IN BIG-VOLUME GOODS

Kostikov E.S. 1 Lobaev A.N. 1 Malygin A.L. 1 Myasnikov V.M. 1
1 Nizhny Novgorod State Technical University n. a. R. E. Alekseev
We consider vacuum chamber leak detection method based on the accumulation of trial gas leakage in a porous membrane disposed in the movable vacuum chamber. Based on this method, an apparatus of leaks localization has been developed; this apparatus consists of a cumulative porous membrane with gas-tight top face and a flow (pressure) transducer of trial gas. On the basis of quasi-homogeneous approximation and phenological approach to mass transfer in the mode of free-flow of gas in the porous medium the mathematical model describing the concentration field of trial gas leakage in the mobile cellular membrane in the vicinity of the leak has been detected. Computer modeling in the LabVIEW environment made it possible to obtain information about the evolution of concentration field of trial gas leakage as well as the information concerning the dependence of average concentration of trial gas leakage located near the transducer, on time.