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Gidrodinamika centrobezno-barbotaznyh gazoohladitelej kontaktnogo tipa

Il'in A., Kalekin V., Kalekin D.

Czasopismo Techniczne. Mechanika

2008

R. 105, z. 2-M

113-120

This paper describes design of centrifugal-foam apparatuses (CFA) for direct gas cooling. The absence of lubricant in compressed gas allows considering this method of cooling rather perspective. Different liquid and gas dynamic processes have been researched on CFA with different angles of contact element openings. Hydraulic resistances of gas phase are defined, borders of stable functioning are detected: modes with "fall-off" of liquid though holes of perforation of contact element when gas flow is insufficient, "drowning" of conic contact element with liquid with lower feed and "hanging" of liquid with higher feed of it on contact element. Hydrodynamic CFA modes are categorized. Experiment results are interpreted as non-dimensional functional dependence.

Bundles of contact elements on fibered fibered manifolds and the flow operator

Mikulski W., Tomas J.

Demonstratio Mathematica

2007

Vol. 40, nr 2

485-493

We define the concept of a fibered fibered (k1, k2, l1, l2)- contact element of order (r1, . . . , r8) for r8 > r4 < r5 > r3, r8 > r6 < r7 > r2 and r1 < ri for ri = 2, 3, . . . , 8. For k1 < m1, k2 < m2, l1 < n1, l2 < n2, we define a bundle func tor Kr1,...,r8/ k1,k2,l1,l2 defined on the category FM2 m1,m2,n1,n2 of (m1,m2, n1,n2)-fibere fibered manifolds. We prove that the only natural transformation on the bundle functor Kr1,...r8/ k1,k2,l1,l2 is the identity one. Moreover, we prove that any natural operator lifting projectable vector fields Y to Kr1,...r8/ k1,k2,l1,l2 Y is a constant multiple of the flow operator.