摘要
利用三维CAE软件对我所某款高速轻型柴油机冷却水套进行开发。首先运用Star-ccm+对整个冷却水套进行优化,初步获得较为理想的冷却流场分布,并提取该方案的缸盖热边界条件,即流体壁面温度及换热系数;然后将提取的热边界条件映射到有限元面网格,并运用有限元技术将其与缸盖体单元进行耦合,先后计算出缸盖的温度场及热应力分布,结合缸盖热应力分析结果,对冷却水套及缸盖固体区域进行优化,重复前面仿真工作,直到整个水套流场及缸盖热应力分布合理。
The paper designed a cooling-water jacket of a high-speed and light-duty diesel engine based on CAE software. Firstly ,it used star-ccm ＋ to optimize the cooling jacket structure and exported the temperature and heat transfer coefficient of cooling jacket wall as thermal boundary of cylinder head. Secondly, it mapped the thermal boundary to finite element surface mesh, and then obtained the temperature and thermal stress distribution of cylinder head based on coupling analysis. Finally, it was necessary to modify the cylinder head structure based on coupling results, until the values of cylinder head flow field and thermal stress are acceptable.
出处
《拖拉机与农用运输车》
2017年第3期37-42,共6页
Tractor & Farm Transporter
关键词
冷却水套
热边界
耦合
缸盖
映射
热应力
Cooling-water jacket
Thermal boundary
Coupling
Cylinder head
Mapping
Thermal stress
