建立了符合实际的控制方程和简化物理模型。
The author erected the reasonable and simplied control equation and physical model.
问题简化及网格划分在数值模拟中合理的简化物理模型既能反应问题物理本质又能使模拟得以顺利实现。
Simplify the problem and divide the mesh In numerical simulation, proper simplification of the physical problem can make the simulation simple.
另一方面，如果可能，一个物理模型以符合产品要求的方式，并且按初始比例简化，以便使任何人都能在设计和造型上做出正确的评价。
On the other hand, if possible, a physical model to meet the product requirements, and according to the initial ratio of simplified, so that anyone can design and modeling of the correct evaluation.
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