Numerical modelling the air flow in parts of air jet loom

• Autorzy: Adámek K.
• Konferencja: International Conference on Numerical Mathematics and Computational Mechanics : NMCM'98 (8 th ; August 1998 ; Miskolc ; Hungary)
• Języki publikacji: EN

Abstrakty

EN

Paper summarizes the first results of two-dimensional (2D) numerically modelled expansion and flow of compressible and non-viscous gas in typical parts of air jet weaving system ; namely in main nozzle designed as an ejector with various shapes of the mixing zone, in relay (auxiliary) nozzle with substantial flow separation in the rash flow bend directly before the nozzle outlet, and the influence of the reed dent edges shape on the free stream reflection and penetration through reed gaps along a real 'porous' wall. The used Euler's equations are solved by a Finite Volumes Method (FVM) with automatic mesh generation and optimization of unstructured triangle mesh. Graphical results show 2D isolinies of all gas state values, further Mach number, entropy and velocity vectors. 1D profiles of all quantities along chosen cross-section or surfaces can be obtained, too. They give to the designer a large and quick review about the problem. The condicience with experiment, measuring and weaving tests is very good. The advantage of numerical modelling consists in the very quick, simple and user-friendly operation.

Słowa kluczowe

EN

numerical modelling; weaving; finite volume method

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Computer Assisted Mechanics and Engineering Sciences
• Rocznik: 1999
• Tom: Vol. 6, No. 3-4
• Strony: 251--261
• Opis fizyczny: Bibliogr. 7 poz., il., rys., wykr.

Twórcy

autor

Adámek K.

• VÚTS - Research Institute for Textile Machines Liberec, U Jezu 4, 46119 Liberec, Czech Republic