...Felix C. von Plehwe; Corina Schwitzke; Hans-Jörg Bauer To design gearboxes with very high power densities, an effective means of cooling the gears and knowledge of the achievable heat transfer coefficients are necessary. In this paper, a method to measure heat transfer coefficients for oil...

... of joints. Basically, tribological processes occur everywhere where there is relative motion. This introduction will briefly cover the motivations for the work presented, the major objectives, and the previous work done in the applicable fields. cellular automata cooling design...

... testing on steel coupons cooled by Cu-based MHEs. Low-profile Cu-based MHEs were fabricated and bonded to steel coupons, whose front faces were made to contact a crowned rotating steel ring, with and without oil lubrication. A series of tribological tests were conducted under different conditions...

... rise is roughly 120 ° C . It is shown that the cooling effect in grooves becomes negligible as the engagement proceeds since the film thickness and the flow rate decrease. Note that the temperature near the outer rim is higher than that near the inner radius, as expected. The temperature...

... Contacts ,” ASME J. Tribol. 0742-4787 , 128 ( 1 ), pp. 218 – 220 . 10.1115/1.2125967 Hauk , A. , and Weidner , E. , 2000 , “ Thermodynamic and Fluid-Dynamic Properties of Carbon Dioxide With Different Lubricants in Cooling Circuits for Automobile Application ,” Ind. Eng. Chem. Res...

... two metals. Email: maria-maciag@wp.pl 08 05 2009 23 05 2010 24 06 2010 24 06 2010 cooling enthalpy friction large-scale systems specific heat wear first law of thermodynamics tribological system complex systemic constants C and D compilation of test...

... with typical inner and/or outer cooling flows. Predicted film temperatures agree with published test data, demonstrating the effectiveness of an outer cooling stream to remove heat and to control the operating temperature. The inner flow stream is not as efficient. The analysis shows paths of thermal energy...

... coordinates. For this purpose, the pressure correction method was used in conjunction with the SIMPLE algorithm. A series of numerical solutions is presented that show the flow mechanism within the gap between the rings and the gland. The implication of the flow characteristic on the cooling of the rings...

... conditions as well as the heat that is dissipated through the material pair and the nearby surroundings. Possible solutions to alleviate thermal wear mechanisms include using more thermally robust materials and providing better cooling or heat dissipation to reduce the elevated temperatures. The latter...

... of contacting surfaces. The change in temperature at a contact area may be attributed to the combined effects of frictional heating and convective cooling. This paper presents a transient, three-dimensional solution for the normal surface displacement of an elastic half-space due to an arbitrarily distributed...

... on the tribological behavior of 1080 carbon steel were investigated. Laser glazing is a process in which a high-power laser beam melts the top layer of the surface, followed by rapid cooling and resolidification. This results in a new surface layer microstructure and properties. Laser shock peening, on the other hand...

... raising the cutting tool’s temperature. The metalworking fluid vaporized via flash distillation after contacting the cutting tool, and subsequently condensed upon cooling to form a mist. On the other hand, increasing the fluid flow, Q f , or raising the heat transfer coefficient...