Simulation of the temperature in and in front of the friction contact
A. Daubner, and W. Haas. Tagungsband NAFEMS Seminar: Simulation of Complex Flows (CFD), page 1-11. Bernau am Chiemsee, NAFEMS Deutschand, (2009)355.
Abstract
For simple geometries like a plane plate the heat transfer coefficients (HTC) can be calculated in an analytical way. With more complex geometries these empirical
approach fails. The HTCs of real machines can only be measured by time-consuming experiments. The crux is, that these coefficients depend on the type of the flow and the thermal properties of the solid materials and the fluids, which depend again on the geometrie properties and the operating conditions. Another way is their identification by doing a numerical fluid simulation regarding the energy conservation
equations.
This work presents an approach to calculate the heat transfer coefficients of a test rig
for radial shaft seals. A computational fluid dynamics analysis was done to get the velocity and the temperature distribution. After this, it is possible to derive the heat transfer coefficients. Concerning the high cpu-time for an adequate wall treatment, it was checked whether it makes sense to use the determined heat transfer coefficients in a non-fluid heat transfer simulations as boundary conditions.
The numerical results will be verified with experimental results at the test rig for radial shaft seals. Therefore two thermo couples were placed in the rotating shaft to get the temperature under the sealing edge. Because this method is technically most demanding, a thermal imaging system was used to get the temperature in front of the optically accessible area of the seal ring. Thermal imaging measurements show a 4 Klower temperature, compared to the thermo couples. This difference will be checked.
%0 Conference Paper
%1 Daubner.2009b
%A Daubner, André
%A Haas, Werner
%B Tagungsband NAFEMS Seminar: Simulation of Complex Flows (CFD)
%C Bernau am Chiemsee
%D 2009
%I NAFEMS Deutschand
%K W_Haas from:thomasherzig dichtungstechnik from:brunomueller from:samuelschwamm ima A_Daubner
%P 1-11
%T Simulation of the temperature in and in front of the friction contact
%X For simple geometries like a plane plate the heat transfer coefficients (HTC) can be calculated in an analytical way. With more complex geometries these empirical
approach fails. The HTCs of real machines can only be measured by time-consuming experiments. The crux is, that these coefficients depend on the type of the flow and the thermal properties of the solid materials and the fluids, which depend again on the geometrie properties and the operating conditions. Another way is their identification by doing a numerical fluid simulation regarding the energy conservation
equations.
This work presents an approach to calculate the heat transfer coefficients of a test rig
for radial shaft seals. A computational fluid dynamics analysis was done to get the velocity and the temperature distribution. After this, it is possible to derive the heat transfer coefficients. Concerning the high cpu-time for an adequate wall treatment, it was checked whether it makes sense to use the determined heat transfer coefficients in a non-fluid heat transfer simulations as boundary conditions.
The numerical results will be verified with experimental results at the test rig for radial shaft seals. Therefore two thermo couples were placed in the rotating shaft to get the temperature under the sealing edge. Because this method is technically most demanding, a thermal imaging system was used to get the temperature in front of the optically accessible area of the seal ring. Thermal imaging measurements show a 4 Klower temperature, compared to the thermo couples. This difference will be checked.
%@ 1-874376-58-3
@inproceedings{Daubner.2009b,
abstract = {For simple geometries like a plane plate the heat transfer coefficients (HTC) can be calculated in an analytical way. With more complex geometries these empirical
approach fails. The HTCs of real machines can only be measured by time-consuming experiments. The crux is, that these coefficients depend on the type of the flow and the thermal properties of the solid materials and the fluids, which depend again on the geometrie properties and the operating conditions. Another way is their identification by doing a numerical fluid simulation regarding the energy conservation
equations.
This work presents an approach to calculate the heat transfer coefficients of a test rig
for radial shaft seals. A computational fluid dynamics analysis was done to get the velocity and the temperature distribution. After this, it is possible to derive the heat transfer coefficients. Concerning the high cpu-time for an adequate wall treatment, it was checked whether it makes sense to use the determined heat transfer coefficients in a non-fluid heat transfer simulations as boundary conditions.
The numerical results will be verified with experimental results at the test rig for radial shaft seals. Therefore two thermo couples were placed in the rotating shaft to get the temperature under the sealing edge. Because this method is technically most demanding, a thermal imaging system was used to get the temperature in front of the optically accessible area of the seal ring. Thermal imaging measurements show a 4 Klower temperature, compared to the thermo couples. This difference will be checked.},
added-at = {2021-03-25T17:56:38.000+0100},
address = {Bernau am Chiemsee},
author = {Daubner, André and Haas, Werner},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2e5475d8f8e9ac8d1d8025ec5d6cb93fa/ima-publ},
booktitle = {Tagungsband NAFEMS Seminar: Simulation of Complex Flows (CFD)},
interhash = {77ff1904d52653d8474e6cc14b6323d6},
intrahash = {e5475d8f8e9ac8d1d8025ec5d6cb93fa},
isbn = {1-874376-58-3},
keywords = {W_Haas from:thomasherzig dichtungstechnik from:brunomueller from:samuelschwamm ima A_Daubner},
note = 355,
pages = {1-11},
publisher = {NAFEMS Deutschand},
timestamp = {2021-03-25T16:56:38.000+0100},
title = {Simulation of the temperature in and in front of the friction contact},
year = 2009
}
