2013 1(12)

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   Short abstract

 

Pages:

336 - 339

Language:

RU

Ref.:

3


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2013_1(12)_60.pdf

 

 

THERMAL CONDUCTIVITY OF METAL MATERIALS IN CONDITIONS OF ACTION OF CENTRIFUGAL ACCELERATIONS AND FORCES

Lepeshkin A.R.

P.I.Baranova Central Institute of Aviation Motors (CIAM), Moscow, Russia


Citation:

Lepeshkin, A.R., (2013) Thermal conductivity of metal materials in conditions of action of centrifugal accelerations and forces, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(12), PP. 336 - 339.


Keywords:

heating; heat-conductor; thermal conductivity; temperature; centrifugal accelerations and forces


Abstracts:

The investigation of the thermal conductivity of a metal materials in the field of action of the centrifugal accelerations and forces is important for aerospace engineering. The characteristics of material thermal conductivity are used in the calculation of the thermal state of blades and disks of the turbine rotor. The original method and device with a heat-conductor to determine the thermophysics characteristics on the spin rig using the vacuum chamber in conditions of centrifugal acceleration and forces has been developed. The results of the investigations of unsteady heat-conductor in the field of centrifugal forces and accelerations are given. From the analysis of the results of experimental investigations it may be stated that the thermal conductivity of the heat-conductor increases at an increase of a rotation frequency compared to the steady state without rotation. In the studied phenomenon of thermal conductivity the two components are present: the action of the centrifugal acceleration and centrifugal tensile load. The second component is 1020% on the basis of obtained experimental data on the influence of stretching. Thus, this increase of the thermal conductivity significantly associated with an increase of an electronic conductivity of the metal under the influence of centrifugal accelerations.


References:

  1. Emirov S.N., Bulaeva N.M. and Ramazanova E.N. The influence of pressure and temperature on the thermal conductivity of mono-and poly-crystalline samples of gallium antimonide, Abstracts of the XII Russian conference on thermophysical properties of substances, Moscow, Science, 2008, p. 306.

  2. Patent 2235982, Russian Federation, IPC H02N 11/00, Method and apparatus for determining the thermal properties of solid materials in the field of centrifugal forces, Applicant and patent-holder CIAM - № 2010117026/07; appl. 30.04.2010, publ. 20.04.2011, Bull. no. 11.

  3. Ivanov Y.A., Krashenninikov S.Y. To the question of determining the characteristics of turbulence using diffusion measurements, Mechanic of fluid and gas, 1970, no. 3, pp. 90-96.

 

 
     

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