Comments (2)
- 如果是定常的流场问题,geom可以定义你需要的计算域,这个直接用ppsci.geometry.xxx就行,比如你是2D的矩形,直接用ppsci.geometry.Rectangle来定义即可,不需要管time;
- 此外,定常问题一般是给定边界条件即可,通常不需要初始值,直接给与时间无关的边界,可以用geometry加上criterion(具体可参考LDC/Steady的case。你这里说的初始温度不同,我能理解成随着对流形成,实际最初的温度场就破坏了? 那本质上应该不是定常问题吧😂,所以如果是非定常,那么这个就是初始值,可以通过导入data对应的值,与PINN网络在相对0时刻的输出形成loss项,这个可参考Cylinder2D/unsteady的case。
不知道我是否理解你的问题。
from paddlescience.
- 如果是定常的流场问题,geom可以定义你需要的计算域,这个直接用ppsci.geometry.xxx就行,比如你是2D的矩形,直接用ppsci.geometry.Rectangle来定义即可,不需要管time;
- 此外,定常问题一般是给定边界条件即可,通常不需要初始值,直接给与时间无关的边界,可以用geometry加上criterion(具体可参考LDC/Steady的case。你这里说的初始温度不同,我能理解成随着对流形成,实际最初的温度场就破坏了? 那本质上应该不是定常问题吧😂,所以如果是非定常,那么这个就是初始值,可以通过导入data对应的值,与PINN网络在相对0时刻的输出形成loss项,这个可参考Cylinder2D/unsteady的case。
不知道我是否理解你的问题。
好的,非常感谢你的回复!是我对定常和非定常的理解存在一些问题。
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