Heat Transfer Predictions and Experiments in a Motored Engine University of WisconsinMadison Engine Research Center

Format:

Conference/Event

Author/Creator:

Yang, Jialin, author.

Conference Name:

1988 SAE International Off-Highway and Powerplant Congress and Exposition (1988-09-12 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

In the first part of this study, a one-dimensional code was used to compare predictions from six different two-equation turbulence models. It is shown that the application of the traditional k-ε models to the viscous-dominated region of the boundary layer can produce errors in both the calculated heat flux and surface friction. A low-Reynolds-number model does not appear to predict similar non-physical effects.A new one-dimensional model, which includes the effect of compression, has been formulated by multiparameter fit to the numerical solution of the energy equation. This model can be used in place of the law-of-the-wall to calculate the surface heat flux.The experiments were performed in a specially-instrumented engine, allowing optical access to the clearance volume. Measurements of heat flux, swirl velocities, and momentum boundary layer thickness were made for different engine speeds. Comparison of the model predictions with the results from the experiment showed good agreement

Notes:

Vendor supplied data

Publisher Number:

881314

Access Restriction:

Restricted for use by site license