Current nondimensionalized time step of 1.0000e+00 exceeds the nondimensionalized stable time step of 1.5418e-01.

[yuxin0909]

Hi,I'm using the pylith 2.2.2 version and I'm having problems running the viscoelastic model“RuntimeError: Current nondimensionalized time step of 1.0000e+00 exceeds the nondimensionalized stable time step of 1.5418e-01.I have three viscoelastic blocks, two of which are 1e+20pas and one that is 1e+18pas, and then I get an error on run.

[baagaard-usgs]

In a quasi-static simulation with a Maxwell viscoelastic model, PyLith checks whether the time step is less than 0.2 * Maxwell time. Given your shear modulus and viscosity, PyLith computes that the nondimensional stable time step is 0.154, but your nondimesional time step is 1.0. This means you need to reduce your time step. Assuming you are using the default scales for nondimensionalization (default time scale is 1 year) means you need to reduce your time step from 1.0year to 0.15year or less. In general, we recommend a time step that is about 0.1 times the shortest Maxwell time to ensure that you sufficiently resolve the relaxation.

[yuxin0909]

Ok, thank you for your reply！发自我的 iPhone在 2024年10月29日，21:56，Brad Aagaard ***@***.***> 写道： In a quasi-static simulation with a Maxwell viscoelastic model, PyLith checks whether the time step is less than 0.2 * Maxwell time. Given your shear modulus and viscosity, PyLith computes that the nondimensional stable time step is 0.154, but your nondimesional time step is 1.0. This means you need to reduce your time step. Assuming you are using the default scales for nondimensionalization (default time scale is 1 year) means you need to reduce your time step from 1.0year to 0.15year or less. In general, we recommend a time step that is about 0.1 times the shortest Maxwell time to ensure that you sufficiently resolve the relaxation. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>

[yuxin0909]

Ok, thank you for your reply！发自我的 iPhone在 2024年10月29日，21:56，Brad Aagaard ***@***.***> 写道： In a quasi-static simulation with a Maxwell viscoelastic model, PyLith checks whether the time step is less than 0.2 * Maxwell time. Given your shear modulus and viscosity, PyLith computes that the nondimensional stable time step is 0.154, but your nondimesional time step is 1.0. This means you need to reduce your time step. Assuming you are using the default scales for nondimensionalization (default time scale is 1 year) means you need to reduce your time step from 1.0year to 0.15year or less. In general, we recommend a time step that is about 0.1 times the shortest Maxwell time to ensure that you sufficiently resolve the relaxation. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>

[yuxin0909]

Ok, thank you for your reply！发自我的 iPhone在 2024年10月29日，21:56，Brad Aagaard ***@***.***> 写道： In a quasi-static simulation with a Maxwell viscoelastic model, PyLith checks whether the time step is less than 0.2 * Maxwell time. Given your shear modulus and viscosity, PyLith computes that the nondimensional stable time step is 0.154, but your nondimesional time step is 1.0. This means you need to reduce your time step. Assuming you are using the default scales for nondimensionalization (default time scale is 1 year) means you need to reduce your time step from 1.0year to 0.15year or less. In general, we recommend a time step that is about 0.1 times the shortest Maxwell time to ensure that you sufficiently resolve the relaxation. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>