刘永;李国祥;
山东大学能源与动力工程学院
摘要：为了确定更为准确的缸盖冷却水腔壁面温度场,以车用226B型柴油机缸盖冷却水腔为研究对象,介绍了缸盖水腔流固耦合传热的过程,并给出了使用流固耦合确定水腔壁面温度场的方法和步骤,根据壁面温度场判断出了壁面各区域的传热类型并求解出了壁面的换热系数,结果表明,流固耦合法与集总参数法壁面温差最大可达36K,考虑沸腾传热因素时水腔壁面传热系数最大值为14200W/m2.K,比未考虑沸腾传热时大了近50%。
关键词： 缸盖;;冷却水腔;;温度场;;流固耦合
Abstract: In order to fix a more precise
temperature field of cooling water jacket wall in cylinder head,the process of
fluid-solid coupling heat transfer in cooling water jacket is introduced with
the study of the water-jacket of 226B diesel engine.The method of determine
temperature field of cooling water jacket wall is proposed.Based on the wall
temperature field the heat transfer type in every wall area is fixed and the
heat transfer coefficient of the wall is simulated,the results show that the
maximal difference amount between the wall temperature field determined by the
fluid-solid coupling method and that of the lumped method is 36K,and the
maximal heat transfer coefficient that takes boiling heat transfer into account
is 14200 W/m2·K,which is about 50% larger than that not considering boiling heat
transfer.
Keywords: Cylinder Head;Water
Jacket;Temperature Field;Fluidsolid Coupling
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