Temperature field in inhomogeneous strongly anisotropic medium with sources

Филиппов, А. И.; Akhmetova, O. V.; Zelenova, M. A.; Asylbaev, M. A.

doi:10.1134/s1810232814020088

Cited by 1 publication

(1 citation statement)

References 2 publications

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“…To determine the thermal state of various parts of engines and machines, one needs to know the thermophysical properties of materials, such as thermal diffusivity and thermal conductivity [1][2][3][4][5][6][7]. Study of the thermal diffusivity of metallics in a field of accelerations and forces is a new problem, and its solution is essential for aerospace engineering Thermal analysis of gas turbines and their elements is performed by classical models and in many cases is in poor agreement with experiments.…”

Section: Introductionmentioning

confidence: 99%

Technique of studying thermal diffusivity of metallics in different directions in a field of centrifugal accelerations and forces

Lepeshkin

2017

J. Engin. Thermophys.

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Study of the thermal diffusivity of metallics in a field of centrifugal accelerations and forces is essential for aerospace engineering. Characteristics of thermal diffusivity of materials are used in calculations of thermal state of blades and disks of turbine rotors. An original technique and a device on semiconductors have been developed for determination of thermophysical characteristics of materials on an acceleration bench using a vacuum chamber, under centrifugal forces and accelerations. Presented are results on nonstationary heating of heat conductors in the radial and circumferential directions in a field of centrifugal forces and accelerations. Analysis of experimental results shows that the thermal diffusivity of heat conductors grows with rotational speed as compared with a static state without rotation. The thermal diffusivity phenomenon of concern has two components: from centrifugal acceleration and from centrifugal tensile load. From experimental data on the effect of tensile forces it follows that the second component is small. Thus, said thermal diffusivity growth is strongly associated with increase in the velocity of electron drift in a metal under centrifugal acceleration forces.

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Section: Introductionmentioning

confidence: 99%

Technique of studying thermal diffusivity of metallics in different directions in a field of centrifugal accelerations and forces

Lepeshkin

2017

J. Engin. Thermophys.

View full text Add to dashboard Cite

show abstract

Temperature field in inhomogeneous strongly anisotropic medium with sources

Cited by 1 publication

References 2 publications

Technique of studying thermal diffusivity of metallics in different directions in a field of centrifugal accelerations and forces

Technique of studying thermal diffusivity of metallics in different directions in a field of centrifugal accelerations and forces

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