CALCULATION AND ANALYSIS ON TEMPERATURE FIELD FOR GASOLINE ENGINE

摘要

Numerical calculation method is applied in thermal analysis area with the development of the computer technology. Solid-Fluid whole conjugated heat transfer method can take the mutual influence both the fluid flow and the heat transfer into account. Much more accurate and reasonable temperature fields results can be obtained, which provides the required conditions for the heat stress calculation. The engine model is simplified reasonably and meshed in this paper. Then the whole conjugated heat transfer method is applied to calculate the gasoline engine temperature field. The analysis is carried out on the temperature field, velocity field and heat transfer coefficient results. The results show that the design scheme of the water jacket model meets the cooling need of the new engine. Comparing the calculated results with the experimental ones, great differences are found in local hot regions. More researches on the phenomena and the rules of the boiling heat transfer on the local hot regions in the water jacket of the gasoline engine will be brought out.