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德博拉数 Deborah number

The Deborah number (De) is a dimensionless number, often used in rheology to characterize the fluidity of materials under specific flow conditions. It quantifies the observation that given enough time even a solid-like material might flow, or a fluid-like material can act solid when it is deformed rapidly enough. Materials that have low relaxation times flow easily and as such show relatively rapid stress decay.

参考资料:

https://en.wikipedia.org/wiki/Deborah_number

https://zh.wikipedia.org/wiki/底波拉数

https://baike.baidu.com/item/德博拉数/4513693

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