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Computational and experimental studies were conducted to investigate the heating and cooling of and automotive brake rotor. The experimental study was conducted in order to validate the computational results. Brake rotor temperature was the main response used to prove correlation between the two studies. The objective of the computational model was to consider fluid flow conjugate with heat transfer. To accomplish this, Navier Stokes' equations [1][2] were solved to predict the fluid flow field of the model geometry. This is commonly known as Computational Fluid Dynamics. The results from the fluid flow at the solid-fluid interface was used to calculate heat transfer coefficients for the solid surfaces. These heat transfer coefficients were then used to predict heat exchange between the fluid and solid. Three dimensional conduction and convection were used to compute heat transfer within the fluid and solid.

A computer program (referred to as UF-LRC-3D) was developed for studying the unsteady, three-dimensional flow field inside the combustion chambers of motored Wankel engines as a function of engine design and operating parameters. This paper presents the details of the governing equations and the numerical method used by UF-LRC-3D. Also presented are numerical solutions generated by UF-LRC-3D showing the velocity field inside a motored Wankel engine, the mixing of nonhomogeneous fuel-air mixtures that enter through the intake port, and the mixing that takes place when a gaseous fuel is injected into the combustion chamber during compression.